The URL can be used to link to this page

Home My WebLink About2021 Sept 22 DBV Structural Report.pdf K KHATRI INTERNATIONAL, INC. STRUCTURAL & CIVIL ENGINEERS DIAMOND BAR VILLAGE HOA PHASE 1 STRUCTURAL EVALUATION REPORT EXECUTIVE SUMMARY September 22, 2021 9/23/2021 PAGE 001 OF 186 KHATRI INTERNATIONAL, INC. Page 1 of 5 STRUCTURAL & CIVIL ENGINEERS DIAMOND BAR VILLAGE HOA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ MEMORANDUM 2021-9-22 STRUCTURAL OBSERVATION REPORT EXECUTIVE SUMMARY STRUCTURAL OBSERVATION DATE: September 17, 2021 SITE ADDRESS: 23601 thru 23665 Golden Springs Dr, Diamond Bar CA, 91765 CLIENT: DIAMOND BAR VILLAGE HOA Attn.: Ms. Yvette Marie Allen, CMCA Certified Community Manager The Avalon Management Group, Inc., AAMC Office: 909-396-8000 Mobile: 951-239-6192 Email: yvette@avalonweb.com REPORT DATE: September 22, 2021. PROJECT: STRUCTURAL OBSERVATION REPORT STRUCTURAL CONDITION OF HOA. 1.0 SCOPE OF WORK 1.1 KH provides Structural Observation Report on the existing condition of the 11 residential buildings and 1 club-house located inside the HOA. This report is for Building “K”. 1.2 This report is based on visual observations with no materials testing or structural analysis for seismic loading. 1.3 Original construction is 1974. 1.4 The purpose of this report is to identify critical structural conditions that may affect the occupancy/life-safety capacity of each building and provide a Risk Rating1 of Green, Yellow, or Red for each building/unit. 1 Risk Rating: GREEN = Safe occupancy; YELLOW = Medium Risk; RED = High Risk 9/23/2021 PAGE 002 OF 186 KHATRI INTERNATIONAL, INC. Page 2 of 5 STRUCTURAL & CIVIL ENGINEERS DIAMOND BAR VILLAGE HOA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ 2.0 FIELD OBSERVATIONS 2.1 The HOA has 12 existing buildings [i.e., 11 buildings with condominiums and 1 clubhouse]. 2.2 Each building is inspected with individual reports provided and all of the buildings experience similar structural issues. 2.3 All buildings have exterior damage and mold, the stucco is damaged. There is extensive evidence of foundation damage from drainage issues, mold, stucco peeling, rafters are deteriorating, and the structural integrity of the roof system is highly suspect on all 12 buildings. 2.4 All buildings have roof rafter damage due to termite infestation, dry-rot and mold accumulated of decades of lack of maintenance. 2.5 All buildings have signs of foundation uplifting and saturated soil due to no drainage control which is causing ground movement and settlement. 2.6 All of the field observations and conditions specific to each building are itemized in 12 reports attached. 9/23/2021 PAGE 003 OF 186 KHATRI INTERNATIONAL, INC. Page 3 of 5 STRUCTURAL & CIVIL ENGINEERS DIAMOND BAR VILLAGE HOA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ 3.0 RISK RATING and REPAIR RECOMMENDATIONS 3.1 Each building 2nd Floor units are RED Tagged due to impending risk from the roof rafter conditions. The occupancy on the 2nd floor must be vacated to allow for safe inspection with destructive testing on all the roofs for all 12 buildings. No work can commence until the 2nd floor of 11 buildings are fully evacuated. 3.2 The clubhouse is in poor condition and is RED Tagged. Further investigation is necessary to determine the scope of repair. 3.3 Each building 1st Floor units are YELLOW Tagged as Medium Risk, and occupancy may continue pending further temporary shoring of the 2nd floor diaphragm and investigation of the wall framing. This condition requires active constructon crew to perform destructive testing with emergency shoring in place and would make occupancy inconvenient and somewhat risky. The owners of the 1st Floor units may decide at their own risk, and against Khatri's recommendation to vacate pending Emergency Temporary Shoring be installed to secure the 2nd floor and Roof Structure. 3.4 All Balcony Units are RED Tagged with 2nd floor and should be evacuated promptly. 3.5 Next steps on this project are: A. Install Emergency Temporary Shoring for the roof structure on each of the 12 buildings and secure the perimeter against entry. C. Perform Asbestos Testing on all 12 Buildings before construction. D. Perform Lead Based Testing on all 12 Buildings before construction. E. Proceed with Destructive Testing in conjunction with a general contactor to expose selected areas of the exterior walls, footings, and roof rafters. F. Prepare a structural repair plan formulated on Tasks A-E and obtain permit approvals prior to commencing reconstruction. 9/23/2021 PAGE 004 OF 186 KHATRI INTERNATIONAL, INC. Page 4 of 5 STRUCTURAL & CIVIL ENGINEERS DIAMOND BAR VILLAGE HOA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 1: Aerial View of the Property. (The Village at Diamond Bar). B A J I K H G C F E D Clu b ho u s e 9/23/2021 PAGE 005 OF 186 KHATRI INTERNATIONAL, INC. Page 5 of 5 STRUCTURAL & CIVIL ENGINEERS DIAMOND BAR VILLAGE HOA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ 3.0 DISCLAIMER The basis for this report is a visual examination of the structure. Field conditions and unknown elements of a building make it hard and difficult to assess the structural capacity of a building and its structural elements to assess the resistance to future events such as earthquakes, landslides, subsidence, tsunamis, soil saturation, and other unknown events. The standard of care employed in this site visit and report is based on the industry standard. No warranties are provided either expressed or implied. Thank you for selecting my firm. Respectfully Yours, Dilip Khatri, PhD, SE Principal KHATRI INTERNATIONAL INC. 9/23/2021 PAGE 006 OF 186 9/23/21 PAGE 1 OF 1 2021-9-22 Building A Rating Summary.xlsx Unit No. GOOD- with Minimal Visible Damage. MEDIUM RISK; Moderate Damage to the exterior and drainage issues. POOR- DANGEROUS; Excessive Cracks, foundation damage and excessive drainage issues. 1 X 2 X 3 X 4 X 5 X 6 X 7 X 8 X 9 X 10 X 11 X 12 X 13 X 14 X 15 X 16 X 17 X 18 X 19 X 20 X 1ST FLOOR 2ND FLOOR KHATRI INTERNATIONAL INC. BUILDING A 9/23/2021 PAGE 007 OF 186 9/23/21 PAGE 1 OF 1 2021-9-22 Building B Rating Summary.xlsx Unit No. GOOD- with Minimal Visible Damage. MEDIUM RISK; Moderate Damage to the exterior and drainage issues. POOR- DANGEROUS; Excessive Cracks, foundation damage and excessive drainage issues. 1 X 2 X 3 X 4 X 5 X 6 X 7 X 8 X 9 X 10 X 1ST FLOOR 2ND FLOOR KHATRI INTERNATIONAL INC. BUILDING B 9/23/2021 PAGE 008 OF 186 9/23/21 PAGE 1 OF 1 2021-9-22 Building C Rating Summary.xlsx Unit No. GOOD- with Minimal Visible Damage. MEDIUM RISK; Moderate Damage to the exterior and drainage issues. POOR- DANGEROUS; Excessive Cracks, foundation damage and excessive drainage issues. 1 X 2 X 3 X 4 X 5 X 11 X 12 X 13 X 14 X 15 X 6 X 7 X 8 X 9 X 10 X 16 X 17 X 18 X 19 X 20 X 1ST FLOOR 2ND FLOOR KHATRI INTERNATIONAL INC. BUILDING C 9/23/2021 PAGE 009 OF 186 9/23/21 PAGE 1 OF 1 2021-9-22 Building D Rating Summary.xlsx Unit No. GOOD- with Minimal Visible Damage. MEDIUM RISK; Moderate Damage to the exterior and drainage issues. POOR- DANGEROUS; Excessive Cracks, foundation damage and excessive drainage issues. 1 X 2 X 3 X 4 X 5 X 6 X 6 X 7 X 8 X 9 X 10 X 1ST FLOOR 2ND FLOOR KHATRI INTERNATIONAL INC. BUILDING D 9/23/2021 PAGE 010 OF 186 9/23/21 PAGE 1 OF 1 2021-9-22 Building E Rating Summary.xlsx Unit No. GOOD- with Minimal Visible Damage. MEDIUM RISK; Moderate Damage to the exterior and drainage issues. POOR- DANGEROUS; Excessive Cracks, foundation damage and excessive drainage issues. 1 X 2 X 3 X 4 X 5 X 6 X 7 X 8 X 1ST FLOOR 2ND FLOOR KHATRI INTERNATIONAL INC. BUILDING E 9/23/2021 PAGE 011 OF 186 9/23/21 PAGE 1 OF 1 2021-9-22 Building F Rating Summary.xlsx Unit No. GOOD- with Minimal Visible Damage. MEDIUM RISK; Moderate Damage to the exterior and drainage issues. POOR- DANGEROUS; Excessive Cracks, foundation damage and excessive drainage issues. 1 X 2 X 3 X 4 X 5 X 6 X 7 X 8 X 1ST FLOOR 2ND FLOOR KHATRI INTERNATIONAL INC. BUILDING F 9/23/2021 PAGE 012 OF 186 9/23/21 PAGE 1 OF 1 2021-9-22 Building G Rating Summary.xlsx Unit No. GOOD- with Minimal Visible Damage. MEDIUM RISK; Moderate Damage to the exterior and drainage issues. POOR- DANGEROUS; Excessive Cracks, foundation damage and excessive drainage issues. 1 X 2 X 3 X 4 X 5 X 6 X 6 X 7 X 8 X 9 X 10 X 1ST FLOOR 2ND FLOOR KHATRI INTERNATIONAL INC. BUILDING G 9/23/2021 PAGE 013 OF 186 0000009/23/21 000000PAGE 1 OF 2021-9-22 Building H Rating Summary.xlsx Unit No. GOOD- with Minimal Visible Damage. MEDIUM RISK; Moderate Damage to the exterior and drainage issues. POOR- DANGEROUS; Excessive Cracks, foundation damage and excessive drainage issues. 1 X 2 X 3 X 4 X 5 X 6 X 7 X 8 X 1st STORY 2nd STORY KHATRI INTERNATIONAL INC. BUILDING H RATING SUMMARY 9/23/2021 PAGE 014 OF 186 9/23/21 PAGE 1 OF 1 2021-9-22 Building I Rating Summary.xlsx Unit No. GOOD- with Minimal Visible Damage. MEDIUM RISK; Moderate Damage to the exterior and drainage issues. POOR- DANGEROUS; Excessive Cracks, foundation damage and excessive drainage issues. 1 X 2 X 3 X 4 X 5 X 6 X 6 X 7 X 8 X 9 X 10 X 1ST FLOOR 2ND FLOOR KHATRI INTERNATIONAL INC. BUILDING I 9/23/2021 PAGE 015 OF 186 9/23/21 PAGE 1 OF 1 2021-9-22 Building J Rating Summary.xlsx Unit No. GOOD- with Minimal Visible Damage. MEDIUM RISK; Moderate Damage to the exterior and drainage issues. POOR- DANGEROUS; Excessive Cracks, foundation damage and excessive drainage issues. 1 X 2 X 3 X 4 X 5 X 6 X 6 X 7 X 8 X 9 X 10 X 1ST FLOOR 2ND FLOOR KHATRI INTERNATIONAL INC. BUILDING J 9/23/2021 PAGE 016 OF 186 9/23/21 PAGE 1 OF 2 2021-9-22 Building K Rating Summary.xlsx Unit No. GOOD- with Minimal Visible Damage. MEDIUM RISK; Moderate Damage to the exterior and drainage issues. POOR- DANGEROUS; Excessive Cracks, foundation damage and excessive drainage issues. 1 X 2 X 3 X 4 X 5 X 6 X 7 X 15 X 16 X 17 X 18 X 19 X 20 X 21 X 8 X 9 X 10 X 11 X 12 X 13 X 14 X 22 X 23 X 24 X 25 X 26 X 27 X 1ST FLOOR 2ND FLOOR KHATRI INTERNATIONAL INC. BUILDING K 9/23/2021 PAGE 017 OF 186 9/23/21 PAGE 2 OF 2 2021-9-22 Building K Rating Summary.xlsx 28 X 9/23/2021 PAGE 018 OF 186 9/23/21 PAGE 1 OF 1 2021-9-22 Clubhouse Rating Summary.xlsx Unit No. GOOD- with Minimal Visible Damage. MEDIUM RISK; Moderate Damage to the exterior and drainage issues. POOR- DANGEROUS; Excessive Cracks, foundation damage and excessive drainage issues. CLUBHOUSE X KHATRI INTERNATIONAL INC. CLUBHOUSE 9/23/2021 PAGE 019 OF 186 K KHATRI INTERNATIONAL, INC. STRUCTURAL & CIVIL ENGINEERS DIAMOND BAR VILLAGE HOA PHASE 1 STRUCTURAL EVALUATION Of BUILDING “A” September 22, 2021 9/23/2021 PAGE 020 OF 186 KHATRI INTERNATIONAL, INC. Page 1 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ MEMORANDUM 2021-9-22 STRUCTURAL OBSERVATION REPORT BUILDING “A” STRUCTURAL OBSERVATION DATE: September 17, 2021 SITE ADDRESS: 23601 thru 23665 Golden Springs Dr, Diamond Bar CA, 91765 CLIENT: DIAMOND BAR, VILLAGE HOA Attn.: Ms. Yvette Marie Allen, CMCA Certified Community Manager The Avalon Management Group, Inc., AAMC Office: 909-396-8000 Mobile: 951-239-6192 Email: yvette@avalonweb.com REPORT DATE: September 22, 2021. PROJECT: STRUCTURAL OBSERVATION REPORT STRUCTURAL CONDITION OF HOA. 1.0 SCOPE OF WORK 1.1 KH provides Structural Observation Report on the existing condition of the eleven residential buildings and one clubhouse located inside the HOA. This report is for Building “A”. 1.2 This report is based on visual observations with no materials testing or structural analysis for seismic loading. 1.3 Original construction is 1974. 9/23/2021 PAGE 021 OF 186 KHATRI INTERNATIONAL, INC. Page 2 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ 2.0 FIELD OBSERVATION 2.1 The HOA has 12 existing buildings [i.e., 11 buildings with condominiums and 1 clubhouse]. 2.2 Building A: the building has a slab foundation. 2.3 The condos in Building A have exterior damage on the stairs heading towards different units. The stucco of Building A has damage corrosion and mold on the walls. 2.4 The foundation of around Building A has corrosion damage, which are due to uncontrolled drainage. 2.5 There are signs of water accumulation in the landscaping around the condos and this is one root cause of foundation uplifting and drainage issues. 2.6 The boundary wall of the HOA connecting Building A and Building B has a gap and is not connected directly with the north wall of building A. There is moisture condition on the surface. 9/23/2021 PAGE 022 OF 186 KHATRI INTERNATIONAL, INC. Page 3 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 1: Aerial View of the Property. (The Village at Diamond Bar). B A J I K H G C F E D Clu b h o u s e 9/23/2021 PAGE 023 OF 186 KHATRI INTERNATIONAL, INC. Page 4 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 2: Front View Elevation Entrance of the HOA. (East Direction). 9/23/2021 PAGE 024 OF 186 KHATRI INTERNATIONAL, INC. Page 5 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 3: Building (A) South Elevation 9/23/2021 PAGE 025 OF 186 KHATRI INTERNATIONAL, INC. Page 6 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 4: North Elevation of Building A. 9/23/2021 PAGE 026 OF 186 KHATRI INTERNATIONAL, INC. Page 7 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 5: Cracks on the concrete steps. 9/23/2021 PAGE 027 OF 186 KHATRI INTERNATIONAL, INC. Page 8 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 6: Stucco damage underneath signs of leakage (North Elevation). 9/23/2021 PAGE 028 OF 186 KHATRI INTERNATIONAL, INC. Page 9 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 7: Northwest corner of the building has clear signs of moisture damage to the foundation. 9/23/2021 PAGE 029 OF 186 KHATRI INTERNATIONAL, INC. Page 10 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 8: Water accumulated on the concrete passage are drainage issues. Existing topography shows a "sump" condition with no exit leading to soil saturation. 9/23/2021 PAGE 030 OF 186 KHATRI INTERNATIONAL, INC. Page 11 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 9: Mold on top of the stucco. (West Elevation). 9/23/2021 PAGE 031 OF 186 KHATRI INTERNATIONAL, INC. Page 12 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 10: Sprinkler system and signs of mold/moss on the wall and ground show drainage issues. Efflorescence1 [white residue] and mold on the CMU wall (West Elevation). 1 Efflorescence: Leaching of calcium from the masonry/concrete block due to long term water seepage. This will lead eventually to structural deterioration of the wall. Lack of water proofing and drainage are the root causation. Efflorescence Mold Sprinkler 9/23/2021 PAGE 032 OF 186 KHATRI INTERNATIONAL, INC. Page 13 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 11: The existing wall between Building A and B. The wall has a gap between the wall of building A and the boundary wall and there is saturated soil due to lack of drainage control. 9/23/2021 PAGE 033 OF 186 KHATRI INTERNATIONAL, INC. Page 14 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ 3.0 DISCLAIMER The basis for this report is a visual examination of the structure and site conditions. Field conditions and unknown elements of a building make it hard and difficult to assess the structural capacity of a building and its structural elements to assess the resistance to future events such as earthquakes, landslides, subsidence, tsunamis, soil saturation, and other unknown events. The standard of care employed in this site visit and report is based on the industry standard. No warranties are provided either expressed or implied. Thank you for selecting my firm. Respectfully Yours, Dilip Khatri, PhD, SE Principal KHATRI INTERNATIONAL INC. 9/23/2021 PAGE 034 OF 186 K KHATRI INTERNATIONAL, INC. STRUCTURAL & CIVIL ENGINEERS DIAMOND BAR VILLAGE HOA PHASE 1 STRUCTURAL EVALUATION Of BUILDING “B” September 22, 2021 9/23/2021 PAGE 035 OF 186 KHATRI INTERNATIONAL, INC. Page 1 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ MEMORANDUM 2021-9-22 STRUCTURAL OBSERVATION REPORT BUILDING “B” STRUCTURAL OBSERVATION DATE: September 17, 2021 SITE ADDRESS: 23601 thru 23665 Golden Springs Dr, Diamond Bar CA, 91765 CLIENT: DIAMOND BAR, VILLAGE HOA Attn.: Ms. Yvette Marie Allen, CMCA Certified Community Manager The Avalon Management Group, Inc., AAMC Office: 909-396-8000 Mobile: 951-239-6192 Email: yvette@avalonweb.com REPORT DATE: September 22, 2021. PROJECT: STRUCTURAL OBSERVATION REPORT STRUCTURAL CONDITION OF HOA. 1.0 SCOPE OF WORK 1.1 KH provides Structural Observation Report on the existing condition of the 11 residences and 1 clubhouse located inside the HOA. This report is for Building “B”. 1.2 This report is based on visual observations with no materials testing or structural analysis for seismic loading. 1.3 Original construction is 1974. 9/23/2021 PAGE 036 OF 186 KHATRI INTERNATIONAL, INC. Page 2 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ 2.0 FIELD OBSERVATION 2.1 The HOA has 12 existing buildings [i.e., 11 buildings with condominiums and 1 clubhouse]. 2.2 Building B: the building has a slab foundation. 2.3 The condos in Building B have exterior damage on the stairs and the stucco. There is mold and termite damage on the wooden members like beams and doors. Also, damage can be seen clearly on the stucco. 2.4 The foundation of around Building B has corrosion damage, which are due to soil saturation and uncontrolled drainage. The foundation uplifting in the south side of the building shows uneven behavior of the slab foundation. 2.5 There is water accumulation in the landscaping around the condos, this is one root cause of foundation uplifting and drainage issues and further settlement of the building. 9/23/2021 PAGE 037 OF 186 KHATRI INTERNATIONAL, INC. Page 3 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 1: Aerial View of the Property. (The Village at Diamond Bar). B A J I K H G C F E D Clu b h o u s e 9/23/2021 PAGE 038 OF 186 KHATRI INTERNATIONAL, INC. Page 4 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 2: Front View Elevation Entrance of the HOA. (East Direction). 9/23/2021 PAGE 039 OF 186 KHATRI INTERNATIONAL, INC. Page 5 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 3: Building (B) North Elevation. 9/23/2021 PAGE 040 OF 186 KHATRI INTERNATIONAL, INC. Page 6 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 4: South Elevation of Building B. 9/23/2021 PAGE 041 OF 186 KHATRI INTERNATIONAL, INC. Page 7 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 5: Signs of damages (possibly termite) on the wooden beam. 9/23/2021 PAGE 042 OF 186 KHATRI INTERNATIONAL, INC. Page 8 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 6: Electrical Area- Signs of wood damages and molds. 9/23/2021 PAGE 043 OF 186 KHATRI INTERNATIONAL, INC. Page 9 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 7: Concrete Patch work on the damaged stucco wall and damage observed on the wooden beam under the window. 9/23/2021 PAGE 044 OF 186 KHATRI INTERNATIONAL, INC. Page 10 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 8: Foundation Uplifting possibly due to the soil saturation and uncontrolled drainage causing ground movement and settlement. (Showing the difference of approx. 2 inches). 9/23/2021 PAGE 045 OF 186 KHATRI INTERNATIONAL, INC. Page 11 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 9: Moisture observed in field on the landscaping of the HOA. 3.0 DISCLAIMER 9/23/2021 PAGE 046 OF 186 KHATRI INTERNATIONAL, INC. Page 12 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ The basis for this report is a visual examination of the structure. Field conditions and unknown elements of a building make it hard and difficult to assess the structural capacity of a building and its structural elements to assess the resistance to future events such as earthquakes, landslides, subsidence, tsunamis, soil saturation, and other unknown events. The standard of care employed in this site visit and report is based on the industry standard. No warranties are provided either expressed or implied. Thank you for selecting my firm. Respectfully Yours, Dilip Khatri, PhD, SE Principal KHATRI INTERNATIONAL INC. 9/23/2021 PAGE 047 OF 186 K KHATRI INTERNATIONAL, INC. STRUCTURAL & CIVIL ENGINEERS DIAMOND BAR VILLAGE HOA PHASE 1 STRUCTURAL EVALUATION Of BUILDING “C” September 22, 2021 9/23/2021 PAGE 048 OF 186 KHATRI INTERNATIONAL, INC. Page 1 of 15 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ MEMORANDUM 2021-9-22 STRUCTURAL OBSERVATION REPORT BUILDING “C” STRUCTURAL OBSERVATION DATE: September 17, 2021 SITE ADDRESS: 23601 thru 23665 Golden Springs Dr, Diamond Bar CA, 91765 CLIENT: DIAMOND BAR, VILLAGE HOA Attn.: Ms. Yvette Marie Allen, CMCA Certified Community Manager The Avalon Management Group, Inc., AAMC Office: 909-396-8000 Mobile: 951-239-6192 Email: yvette@avalonweb.com REPORT DATE: September 22, 2021. PROJECT: STRUCTURAL OBSERVATION REPORT STRUCTURAL CONDITION OF HOA. 1.0 SCOPE OF WORK 1.1 KH provides Structural Observation Report on the existing condition of the 11 residences and 1 club-house located inside the HOA. This report is for Building “C”. 1.2 This report is based on visual observations with no materials testing or structural analysis for seismic loading. 1.3 Original construction is 1974. 9/23/2021 PAGE 049 OF 186 KHATRI INTERNATIONAL, INC. Page 2 of 15 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ 2.0 FIELD OBSERVATION 2.1 The HOA has 12 existing buildings [i.e., 11 buildings with condominiums and 1 clubhouse]. 2.2 Building C: the building has a slab foundation. 2.3 The condos in Building C have exterior damage on the wooden rafters which is due to termite damage. There is patch work observed on the stucco in some elevation which shows repair to the prior damage to the stucco. 2.4 There are clear signs of foundation uplifting and saturated soil due to no drainage source which is causing ground movement and settlement. 2.5 The water accumulation can be clearly seen next to some of the condos, due to which there is water seepage in the foundation. Also, there is damage seen on the base of the stucco which as there are locations where the base of the stucco is missing, and the weep screed is exposed. 9/23/2021 PAGE 050 OF 186 KHATRI INTERNATIONAL, INC. Page 3 of 15 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 1: Aerial View of the Property. (The Village at Diamond Bar). B A J I K H G C F E D Clu b h o u s e 9/23/2021 PAGE 051 OF 186 KHATRI INTERNATIONAL, INC. Page 4 of 15 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 2: Front View Elevation Entrance of the HOA. (East Direction). 9/23/2021 PAGE 052 OF 186 KHATRI INTERNATIONAL, INC. Page 5 of 15 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 3: Building (C) East Elevation. 9/23/2021 PAGE 053 OF 186 KHATRI INTERNATIONAL, INC. Page 6 of 15 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 4: Patch work observed on the stucco, mold and fungus clearly visible on the wall. 9/23/2021 PAGE 054 OF 186 KHATRI INTERNATIONAL, INC. Page 7 of 15 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 5: Termite damage on the roof rafters. 9/23/2021 PAGE 055 OF 186 KHATRI INTERNATIONAL, INC. Page 8 of 15 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 6: Damage on the wood covering on the balcony of the condo. 9/23/2021 PAGE 056 OF 186 KHATRI INTERNATIONAL, INC. Page 9 of 15 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 7: Termite damage on the roof rafters (south elevation) and prior damage to the stucco which the patch work explains the repair. 9/23/2021 PAGE 057 OF 186 KHATRI INTERNATIONAL, INC. Page 10 of 15 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 8: Foundation uplifting and/or tilting due to soil saturation and uncontrolled surface and sub-surface drainage. 9/23/2021 PAGE 058 OF 186 KHATRI INTERNATIONAL, INC. Page 11 of 15 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 9: Extensive damage to the foundation and stucco. The weep screed is exposed. 9/23/2021 PAGE 059 OF 186 KHATRI INTERNATIONAL, INC. Page 12 of 15 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 10: Water Present on the entrance of the unit possible seepage into the ground causing damages like corrosion and tilting to the foundation. 9/23/2021 PAGE 060 OF 186 KHATRI INTERNATIONAL, INC. Page 13 of 15 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 11: Moisture on the ground (West Elevation), also signs of corrosion can be clearly seen on the slab foundation. 9/23/2021 PAGE 061 OF 186 KHATRI INTERNATIONAL, INC. Page 14 of 15 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 12: Saturated soil on the north-west corner of Building C. 9/23/2021 PAGE 062 OF 186 KHATRI INTERNATIONAL, INC. Page 15 of 15 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ 3.0 DISCLAIMER The basis for this report is a visual examination of the structure. Field conditions and unknown elements of a building make it hard and difficult to assess the structural capacity of a building and its structural elements to assess the resistance to future events such as earthquakes, landslides, subsidence, tsunamis, soil saturation, and other unknown events. The standard of care employed in this site visit and report is based on the industry standard. No warranties are provided either expressed or implied. Thank you for selecting my firm. Respectfully Yours, Dilip Khatri, PhD, SE Principal KHATRI INTERNATIONAL INC. 9/23/2021 PAGE 063 OF 186 K KHATRI INTERNATIONAL, INC. STRUCTURAL & CIVIL ENGINEERS DIAMOND BAR VILLAGE HOA PHASE 1 STRUCTURAL EVALUATION Of BUILDING “D” September 22, 2021 9/23/2021 PAGE 064 OF 186 KHATRI INTERNATIONAL, INC. Page 1 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ MEMORANDUM 2021-9-22 STRUCTURAL OBSERVATION REPORT BUILDING “D” STRUCTURAL OBSERVATION DATE: September 17, 2021 SITE ADDRESS: 23601 thru 23665 Golden Springs Dr, Diamond Bar CA, 91765 CLIENT: DIAMOND BAR, VILLAGE HOA Attn.: Ms. Yvette Marie Allen, CMCA Certified Community Manager The Avalon Management Group, Inc., AAMC Office: 909-396-8000 Mobile: 951-239-6192 Email: yvette@avalonweb.com REPORT DATE: September 22, 2021. PROJECT: STRUCTURAL OBSERVATION REPORT STRUCTURAL CONDITION OF HOA. 1.0 SCOPE OF WORK 1.1 KH provides Structural Observation Report on the existing condition of the 11 residences and 1 club-house located inside the HOA. This report is for Building “D”. 1.2 This report is based on visual observations with no materials testing or structural analysis for seismic loading. 1.3 Original construction is 1974. 9/23/2021 PAGE 065 OF 186 KHATRI INTERNATIONAL, INC. Page 2 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ 2.0 FIELD OBSERVATION 2.1 The HOA has 12 existing buildings [i.e., 11 buildings with condominiums and 1 clubhouse]. 2.2 Building D: the building has a slab foundation. 2.3 The condos in Building D have exterior damage on the stucco and the root cause of the damage can be the water leakage underneath the stucco. 2.4 The wooden rafters are excessively damaged which is due to termite damage. 2.4 The swale at Building D and E is clogged with dirt and leaves. This renders it non-functional. 2.5 There are clear signs of foundation uplifting and saturated soil due to no drainage source which is causing ground movement and settlement. 9/23/2021 PAGE 066 OF 186 KHATRI INTERNATIONAL, INC. Page 3 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 1: Aerial View of the Property. (The Village at Diamond Bar). B A J I K H G C F E D Clu b h o u s e 9/23/2021 PAGE 067 OF 186 KHATRI INTERNATIONAL, INC. Page 4 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 2: Front View Elevation Entrance of the HOA. (East Direction). 9/23/2021 PAGE 068 OF 186 KHATRI INTERNATIONAL, INC. Page 5 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 3: Building (D) South Elevation. 9/23/2021 PAGE 069 OF 186 KHATRI INTERNATIONAL, INC. Page 6 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 4: Vertical Crack observed on the corner of the stucco (North Side of the building) and damage on the foundation. 9/23/2021 PAGE 070 OF 186 KHATRI INTERNATIONAL, INC. Page 7 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 5: Roof Rafter is excessively damaged due to rot and termite damage. 9/23/2021 PAGE 071 OF 186 KHATRI INTERNATIONAL, INC. Page 8 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 6: Stucco damage signs of leakage underneath. 9/23/2021 PAGE 072 OF 186 KHATRI INTERNATIONAL, INC. Page 9 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 7: Same as FIGURE 6. 9/23/2021 PAGE 073 OF 186 KHATRI INTERNATIONAL, INC. Page 10 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 8: Swale behind the Building D and Building E (From East to West) filled with leaves and soil. There can be hindrance in the drainage due to the dirt collected throughout the swale. 9/23/2021 PAGE 074 OF 186 KHATRI INTERNATIONAL, INC. Page 11 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 9: Surface water is uncontrolled with no swales or French Drains which allows for saturation of the soil leading to ground movement. 9/23/2021 PAGE 075 OF 186 KHATRI INTERNATIONAL, INC. Page 12 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ 3.0 DISCLAIMER The basis for this report is a visual examination of the structure. Field conditions and unknown elements of a building make it hard and difficult to assess the structural capacity of a building and its structural elements to assess the resistance to future events such as earthquakes, landslides, subsidence, tsunamis, soil saturation, and other unknown events. The standard of care employed in this site visit and report is based on the industry standard. No warranties are provided either expressed or implied. Thank you for selecting my firm. Respectfully Yours, Dilip Khatri, PhD, SE Principal KHATRI INTERNATIONAL INC. 9/23/2021 PAGE 076 OF 186 K KHATRI INTERNATIONAL, INC. STRUCTURAL & CIVIL ENGINEERS DIAMOND BAR VILLAGE HOA PHASE 1 STRUCTURAL EVALUATION Of BUILDING “E” September 22, 2021 9/23/2021 PAGE 077 OF 186 KHATRI INTERNATIONAL, INC. Page 1 of 13 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ MEMORANDUM 2021-9-22 STRUCTURAL OBSERVATION REPORT BUILDING “E” STRUCTURAL OBSERVATION DATE: September 17, 2021 SITE ADDRESS: 23601 thru 23665 Golden Springs Dr, Diamond Bar CA, 91765 CLIENT: DIAMOND BAR, VILLAGE HOA Attn.: Ms. Yvette Marie Allen, CMCA Certified Community Manager The Avalon Management Group, Inc., AAMC Office: 909-396-8000 Mobile: 951-239-6192 Email: yvette@avalonweb.com REPORT DATE: September 22, 2021. PROJECT: STRUCTURAL OBSERVATION REPORT STRUCTURAL CONDITION OF HOA. 1.0 SCOPE OF WORK 1.1 KH provides Structural Observation Report on the existing condition of the 11 residences and 1 club-house located inside the HOA. This report is for Building “E”. 1.2 This report is based on visual observations with no materials testing or structural analysis for seismic loading. 1.3 Original construction is 1974. 9/23/2021 PAGE 078 OF 186 KHATRI INTERNATIONAL, INC. Page 2 of 13 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ 2.0 FIELD OBSERVATION 2.1 The HOA has 12 existing buildings [i.e., 11 buildings with condominiums and 1 clubhouse]. 2.2 Building E: the building has a slab foundation. 2.3 The condos in Building E have exterior damage and mold with vertical cracks on the stucco. 2.4 The north elevation of Building E (rear) has mold on the stucco. There is excessive damage to the stucco on the east side of Building E which is an alarming issue for water leakage inside the building. 2.5 There are clear signs of foundation uplifting and saturated soil due to no drainage source which is causing ground movement and settlement. 2.6 The swale at Building D and E is clogged with dirt and leaves. This renders it non-functional. 9/23/2021 PAGE 079 OF 186 KHATRI INTERNATIONAL, INC. Page 3 of 13 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 1: Aerial View of the Property. (The Village at Diamond Bar). B A J I K H G C F E D Clu b h o u s e 9/23/2021 PAGE 080 OF 186 KHATRI INTERNATIONAL, INC. Page 4 of 13 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 2: Front View Elevation Entrance of the HOA. (East Direction). 9/23/2021 PAGE 081 OF 186 KHATRI INTERNATIONAL, INC. Page 5 of 13 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 3: Building (E) South Elevation. 9/23/2021 PAGE 082 OF 186 KHATRI INTERNATIONAL, INC. Page 6 of 13 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 4: Vertical crack moving from bottom to top of the stucco (unit 5 and 6). 9/23/2021 PAGE 083 OF 186 KHATRI INTERNATIONAL, INC. Page 7 of 13 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 5: Mold on the wall (North Elevation) that proves water penetration inside the building envelope. 9/23/2021 PAGE 084 OF 186 KHATRI INTERNATIONAL, INC. Page 8 of 13 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 6: Damage on the wood cover on the balcony of the condo likely due to long term water penetration and lack of maintenance. 9/23/2021 PAGE 085 OF 186 KHATRI INTERNATIONAL, INC. Page 9 of 13 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 7: Foundation damage clearly visible with water leakage observed on the slab foundation base. 9/23/2021 PAGE 086 OF 186 KHATRI INTERNATIONAL, INC. Page 10 of 13 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 8: Foundation uplifting and/or tilting due to soil saturation and uncontrolled surface and sub-surface drainage. 9/23/2021 PAGE 087 OF 186 KHATRI INTERNATIONAL, INC. Page 11 of 13 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 9: Excessive damage on the stucco is observed. The root cause is water leakage through the stucco/roof envelope. 9/23/2021 PAGE 088 OF 186 KHATRI INTERNATIONAL, INC. Page 12 of 13 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 10: The swale is clogged. 9/23/2021 PAGE 089 OF 186 KHATRI INTERNATIONAL, INC. Page 13 of 13 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ 3.0 DISCLAIMER The basis for this report is a visual examination of the structure. Field conditions and unknown elements of a building make it hard and difficult to assess the structural capacity of a building and its structural elements to assess the resistance to future events such as earthquakes, landslides, subsidence, tsunamis, soil saturation, and other unknown events. The standard of care employed in this site visit and report is based on the industry standard. No warranties are provided either expressed or implied. Thank you for selecting my firm. Respectfully Yours, Dilip Khatri, PhD, SE Principal KHATRI INTERNATIONAL INC. 9/23/2021 PAGE 090 OF 186 K KHATRI INTERNATIONAL, INC. STRUCTURAL & CIVIL ENGINEERS DIAMOND BAR VILLAGE HOA PHASE 1 STRUCTURAL EVALUATION Of BUILDING “F” September 22, 2021 9/23/2021 PAGE 091 OF 186 KHATRI INTERNATIONAL, INC. Page 1 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ MEMORANDUM 2021-9-22 STRUCTURAL OBSERVATION REPORT BUILDING “F” STRUCTURAL OBSERVATION DATE: September 17, 2021 SITE ADDRESS: 23601 thru 23665 Golden Springs Dr, Diamond Bar CA, 91765 CLIENT: DIAMOND BAR, VILLAGE HOA Attn.: Ms. Yvette Marie Allen, CMCA Certified Community Manager The Avalon Management Group, Inc., AAMC Office: 909-396-8000 Mobile: 951-239-6192 Email: yvette@avalonweb.com REPORT DATE: September 22, 2021. PROJECT: STRUCTURAL OBSERVATION REPORT STRUCTURAL CONDITION OF HOA. 1.0 SCOPE OF WORK 1.1 KH provides Structural Observation Report on the existing condition of the 11 residences and 1 club-house located inside the HOA. This report is for Building “F”. 1.2 This report is based on visual observations with no materials testing or structural analysis for seismic loading. 1.3 Original construction is 1974. 9/23/2021 PAGE 092 OF 186 KHATRI INTERNATIONAL, INC. Page 2 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ 2.0 FIELD OBSERVATION 2.1 The HOA has 12 existing buildings [i.e., 11 buildings with condominiums and 1 clubhouse]. 2.2 Building F: the building has a slab foundation. 2.3 The condos in Building F have exterior damage on the stucco and the root cause of the damage can be the water leakage underneath the stucco. There is patch work done in the past which shows the heavy damage to the stucco. 2.4 The wooden covering of the balconies has damage on them which can lead to more damage on the balcony area. 2.5 There are clear signs of foundation uplifting and saturated soil due to no drainage source which is causing ground movement and settlement. 9/23/2021 PAGE 093 OF 186 KHATRI INTERNATIONAL, INC. Page 3 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 1: Aerial View of the Property. (The Village at Diamond Bar). B A J I K H G C F E D Clu b h o u s e 9/23/2021 PAGE 094 OF 186 KHATRI INTERNATIONAL, INC. Page 4 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 2: Front View Elevation Entrance of the HOA. (East Direction). 9/23/2021 PAGE 095 OF 186 KHATRI INTERNATIONAL, INC. Page 5 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 3: Building (F) East Elevation. 9/23/2021 PAGE 096 OF 186 KHATRI INTERNATIONAL, INC. Page 6 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 4: Damaged stucco patched, signs of water leakage from underneath. 9/23/2021 PAGE 097 OF 186 KHATRI INTERNATIONAL, INC. Page 7 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 5: Wooden covering of the balcony excessively damaged, it can also cause further damage to the balcony. 9/23/2021 PAGE 098 OF 186 KHATRI INTERNATIONAL, INC. Page 8 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 6: Cracks originating on the stucco and the base of the stucco is damaged due to uncontrolled surface water runoff (North Elevation). 9/23/2021 PAGE 099 OF 186 KHATRI INTERNATIONAL, INC. Page 9 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 7: Damages to the stucco base and the wall above clear indication of water leaks from underneath. (East Elevation). 9/23/2021 PAGE 100 OF 186 KHATRI INTERNATIONAL, INC. Page 10 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 8: Excessive damage to the stucco clearly visible in the North-west corner of Building F. The foundation has visible signs of corrosion. 9/23/2021 PAGE 101 OF 186 KHATRI INTERNATIONAL, INC. Page 11 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 9: West Elevation of Building F. 9/23/2021 PAGE 102 OF 186 KHATRI INTERNATIONAL, INC. Page 12 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 10: Visible signs of water leaks underneath the stucco as this behavior can be seen throughout the west Elevation of the building F. 9/23/2021 PAGE 103 OF 186 KHATRI INTERNATIONAL, INC. Page 13 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 11: Excessive damage to the foundation slab, also the foundation slab is uneven which can lead to foundation uplifting or tilting. 9/23/2021 PAGE 104 OF 186 KHATRI INTERNATIONAL, INC. Page 14 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ 3.0 DISCLAIMER The basis for this report is a visual examination of the structure. Field conditions and unknown elements of a building make it hard and difficult to assess the structural capacity of a building and its structural elements to assess the resistance to future events such as earthquakes, landslides, subsidence, tsunamis, soil saturation, and other unknown events. The standard of care employed in this site visit and report is based on the industry standard. No warranties are provided either expressed or implied. Thank you for selecting my firm. Respectfully Yours, Dilip Khatri, PhD, SE Principal KHATRI INTERNATIONAL INC. 9/23/2021 PAGE 105 OF 186 K KHATRI INTERNATIONAL, INC. STRUCTURAL & CIVIL ENGINEERS DIAMOND BAR VILLAGE HOA PHASE 1 STRUCTURAL EVALUATION Of BUILDING “G” September 22, 2021 9/23/2021 PAGE 106 OF 186 KHATRI INTERNATIONAL, INC. Page 1 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ MEMORANDUM 2021-9-22 STRUCTURAL OBSERVATION REPORT BUILDING “G” STRUCTURAL OBSERVATION DATE: September 17, 2021 SITE ADDRESS: 23601 thru 23665 Golden Springs Dr, Diamond Bar CA, 91765 CLIENT: DIAMOND BAR, VILLAGE HOA Attn.: Ms. Yvette Marie Allen, CMCA Certified Community Manager The Avalon Management Group, Inc., AAMC Office: 909-396-8000 Mobile: 951-239-6192 Email: yvette@avalonweb.com REPORT DATE: September 22, 2021. PROJECT: STRUCTURAL OBSERVATION REPORT STRUCTURAL CONDITION OF HOA. 1.0 SCOPE OF WORK 1.1 KH provides Structural Observation Report on the existing condition of the 11 residences and 1 club-house located inside the HOA. This report is for Building “G”. 1.2 This report is based on visual observations with no materials testing or structural analysis for seismic loading. 1.3 Original construction is 1974. 9/23/2021 PAGE 107 OF 186 KHATRI INTERNATIONAL, INC. Page 2 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ 2.0 FIELD OBSERVATION 2.1 The HOA has 12 existing buildings [i.e., 11 buildings with condominiums and 1 clubhouse]. The report is the structural observation on the existing conditions of the buildings. 2.2 Building G: the building has a slab foundation. 2.3 The condos in Building G have exterior damage on the stucco and the root cause of the damage can be the water leakage underneath the stucco, excessive stucco damage located on the east elevation of the building. However, there are minor visible evidence seen on the west elevation of the Building G. 2.4 The wooden covering of the balconies has damage on them which can lead to more damage on the balcony area. 2.5 The wooden rafters on Building G have excessive damage due to termites and molds over the years which is damaging the wood on the roof excessively. 2.6 There are clear signs of foundation uplifting and saturated soil due to no drainage source which is causing ground movement and settlement. 9/23/2021 PAGE 108 OF 186 KHATRI INTERNATIONAL, INC. Page 3 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 1: Aerial View of the Property. (The Village at Diamond Bar). B A J I K H G C F E D Clu b h o u s e 9/23/2021 PAGE 109 OF 186 KHATRI INTERNATIONAL, INC. Page 4 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 2: Front View Elevation Entrance of the HOA. (East Direction). 9/23/2021 PAGE 110 OF 186 KHATRI INTERNATIONAL, INC. Page 5 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 3: Building (G) East Elevation. 9/23/2021 PAGE 111 OF 186 KHATRI INTERNATIONAL, INC. Page 6 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 4: Damaged stucco, signs of water leakage from underneath (East Elevation). 9/23/2021 PAGE 112 OF 186 KHATRI INTERNATIONAL, INC. Page 7 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 5: Same as FIGURE 4. 9/23/2021 PAGE 113 OF 186 KHATRI INTERNATIONAL, INC. Page 8 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 6: Same as FIGURE 5. Also, damage seen on the base of the stucco. 9/23/2021 PAGE 114 OF 186 KHATRI INTERNATIONAL, INC. Page 9 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 7: Excessive damage on the roof wooden members observed because of mold and termite damages over the years. 9/23/2021 PAGE 115 OF 186 KHATRI INTERNATIONAL, INC. Page 10 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 8: Damage on the stucco and the foundation visible on the southwest corner of the Building G. Water leaks, saturated soil and uncontrolled drainage are root causes of this behavior. 9/23/2021 PAGE 116 OF 186 KHATRI INTERNATIONAL, INC. Page 11 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 9: West Elevation of Building G. 9/23/2021 PAGE 117 OF 186 KHATRI INTERNATIONAL, INC. Page 12 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 10: Minor visible signs of water leaks underneath the stucco as this behavior can be seen throughout the west Elevation of Building G. 9/23/2021 PAGE 118 OF 186 KHATRI INTERNATIONAL, INC. Page 13 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 11: Excessive damage to the foundation slab, also the foundation slab is uneven which can lead to foundation uplifting or tilting. 9/23/2021 PAGE 119 OF 186 KHATRI INTERNATIONAL, INC. Page 14 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ 3.0 DISCLAIMER The basis for this report is a visual examination of the structure. Field conditions and unknown elements of a building make it hard and difficult to assess the structural capacity of a building and its structural elements to assess the resistance to future events such as earthquakes, landslides, subsidence, tsunamis, soil saturation, and other unknown events. The standard of care employed in this site visit and report is based on the industry standard. No warranties are provided either expressed or implied. Thank you for selecting my firm. Respectfully Yours, Dilip Khatri, PhD, SE Principal KHATRI INTERNATIONAL INC. 9/23/2021 PAGE 120 OF 186 K KHATRI INTERNATIONAL, INC. STRUCTURAL & CIVIL ENGINEERS DIAMOND BAR VILLAGE HOA PHASE 1 STRUCTURAL EVALUATION Of BUILDING “H” September 22, 2021 9/23/2021 PAGE 121 OF 186 KHATRI INTERNATIONAL, INC. Page 1 of 11 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ MEMORANDUM 2021-9-22 STRUCTURAL OBSERVATION REPORT BUILDING “H” STRUCTURAL OBSERVATION DATE: September 17, 2021 SITE ADDRESS: 23601 thru 23665 Golden Springs Dr, Diamond Bar CA, 91765 CLIENT: DIAMOND BAR, VILLAGE HOA Attn.: Ms. Yvette Marie Allen, CMCA Certified Community Manager The Avalon Management Group, Inc., AAMC Office: 909-396-8000 Mobile: 951-239-6192 Email: yvette@avalonweb.com REPORT DATE: September 22, 2021. PROJECT: STRUCTURAL OBSERVATION REPORT STRUCTURAL CONDITION OF HOA. 1.0 SCOPE OF WORK 1.1 KH provides Structural Observation Report on the existing condition of the 11 residences and 1 club-house located inside the HOA. This report is for Building “H”. 1.2 This report is based on visual observations with no materials testing or structural analysis for seismic loading. 1.3 Original construction is 1974. 9/23/2021 PAGE 122 OF 186 KHATRI INTERNATIONAL, INC. Page 2 of 11 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ 2.0 FIELD OBSERVATION 2.1 The HOA has 12 existing buildings [i.e., 11 buildings with condominiums and 1 clubhouse]. 2.2 Building H: the building has a slab foundation. 2.3 The condos in Building H have exterior damage on the stucco and the root cause of the damage can be the water leakage underneath the stucco. 2.4 The wooden rafters on Building H have excessive damage due to termites and molds over the years which is damaging the wood on the roof excessively. 2.5 There are clear signs of foundation uplifting and saturated soil due to no drainage source which is causing ground movement and settlement. 9/23/2021 PAGE 123 OF 186 KHATRI INTERNATIONAL, INC. Page 3 of 11 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 1: Aerial View of the Property. (The Village at Diamond Bar). B A J I K H G C F E D Clu b h o u s e 9/23/2021 PAGE 124 OF 186 KHATRI INTERNATIONAL, INC. Page 4 of 11 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 2: Front View Elevation Entrance of the HOA. (East Direction). 9/23/2021 PAGE 125 OF 186 KHATRI INTERNATIONAL, INC. Page 5 of 11 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 3: Building (H) East Elevation. 9/23/2021 PAGE 126 OF 186 KHATRI INTERNATIONAL, INC. Page 6 of 11 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 4: Damaged stucco, signs of water leakage from underneath (East Elevation). 9/23/2021 PAGE 127 OF 186 KHATRI INTERNATIONAL, INC. Page 7 of 11 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 5: Same as FIGURE 4. 9/23/2021 PAGE 128 OF 186 KHATRI INTERNATIONAL, INC. Page 8 of 11 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 6: Same as FIGURE 5. 9/23/2021 PAGE 129 OF 186 KHATRI INTERNATIONAL, INC. Page 9 of 11 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 7: Excessive damage on the roof wooden members observed because of mold and termite damages over the years. 9/23/2021 PAGE 130 OF 186 KHATRI INTERNATIONAL, INC. Page 10 of 11 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 8: Damages on the stucco and the foundation visible on the northwest corner of the Building H. Water leaks, saturated soil and uncontrolled drainage are root causes of this behavior. 9/23/2021 PAGE 131 OF 186 KHATRI INTERNATIONAL, INC. Page 11 of 11 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ 3.0 DISCLAIMER The basis for this report is a visual examination of the structure. Field conditions and unknown elements of a building make it hard and difficult to assess the structural capacity of a building and its structural elements to assess the resistance to future events such as earthquakes, landslides, subsidence, tsunamis, soil saturation, and other unknown events. The standard of care employed in this site visit and report is based on the industry standard. No warranties are provided either expressed or implied. Thank you for selecting my firm. Respectfully Yours, Dilip Khatri, PhD, SE Principal KHATRI INTERNATIONAL INC. 9/23/2021 PAGE 132 OF 186 K KHATRI INTERNATIONAL, INC. STRUCTURAL & CIVIL ENGINEERS DIAMOND BAR VILLAGE HOA PHASE 1 STRUCTURAL EVALUATION Of BUILDING “I” September 22, 2021 9/23/2021 PAGE 133 OF 186 KHATRI INTERNATIONAL, INC. Page 1 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ MEMORANDUM 2021-9-22 STRUCTURAL OBSERVATION REPORT BUILDING “I” STRUCTURAL OBSERVATION DATE: September 17, 2021 SITE ADDRESS: 23601 thru 23665 Golden Springs Dr, Diamond Bar CA, 91765 CLIENT: DIAMOND BAR, VILLAGE HOA Attn.: Ms. Yvette Marie Allen, CMCA Certified Community Manager The Avalon Management Group, Inc., AAMC Office: 909-396-8000 Mobile: 951-239-6192 Email: yvette@avalonweb.com REPORT DATE: September 22, 2021. PROJECT: STRUCTURAL OBSERVATION REPORT STRUCTURAL CONDITION OF HOA. 1.0 SCOPE OF WORK 1.1 KH provides Structural Observation Report on the existing condition of the 11 residences and 1 club-house located inside the HOA. This report is for Building “I”. 1.2 This report is based on visual observations with no materials testing or structural analysis for seismic loading. 1.3 Original construction is 1974. 9/23/2021 PAGE 134 OF 186 KHATRI INTERNATIONAL, INC. Page 2 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ 2.0 FIELD OBSERVATION 2.1 The HOA has 12 existing buildings [i.e., 11 buildings with condominiums and 1 clubhouse]. 2.2 Building I: the building has a slab foundation. 2.3 The condos in the HOA have exterior damage and mold with vertical cracks on the stucco. 2.4 The wooden rafters on Building I have excessive damage due to termites and molds over the years which is damaging the wood on the roof excessively. 2.5 There are clear signs of foundation uplifting and saturated soil due to no drainage source which is causing ground movement and settlement. 9/23/2021 PAGE 135 OF 186 KHATRI INTERNATIONAL, INC. Page 3 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 1: Aerial View of the Property. (The Village at Diamond Bar). B A J I K H G C F E D Clu b h o u s e 9/23/2021 PAGE 136 OF 186 KHATRI INTERNATIONAL, INC. Page 4 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 2: Front View Elevation Entrance of the HOA. (East Direction). 9/23/2021 PAGE 137 OF 186 KHATRI INTERNATIONAL, INC. Page 5 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 3: Building (E) East Elevation. 9/23/2021 PAGE 138 OF 186 KHATRI INTERNATIONAL, INC. Page 6 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 4: Damaged stucco, signs of water leakage from underneath (East Elevation). 9/23/2021 PAGE 139 OF 186 KHATRI INTERNATIONAL, INC. Page 7 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 5: Same as FIGURE 4. 9/23/2021 PAGE 140 OF 186 KHATRI INTERNATIONAL, INC. Page 8 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 6: Same as FIGURE 5. 9/23/2021 PAGE 141 OF 186 KHATRI INTERNATIONAL, INC. Page 9 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 7: Damage on the roof wooden members observed because of mold and termite damages over the years. 9/23/2021 PAGE 142 OF 186 KHATRI INTERNATIONAL, INC. Page 10 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 8: Water accumulated on the concrete passage are drainage issues. Existing topography shows a "sump" condition with no exit leading to soil saturation. 9/23/2021 PAGE 143 OF 186 KHATRI INTERNATIONAL, INC. Page 11 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 9: Foundation uplifting and saturated soil and uncontrolled drainage causing ground movement and settlement. 9/23/2021 PAGE 144 OF 186 KHATRI INTERNATIONAL, INC. Page 12 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ 3.0 DISCLAIMER The basis for this report is a visual examination of the structure. Field conditions and unknown elements of a building make it hard and difficult to assess the structural capacity of a building and its structural elements to assess the resistance to future events such as earthquakes, landslides, subsidence, tsunamis, soil saturation, and other unknown events. The standard of care employed in this site visit and report is based on the industry standard. No warranties are provided either expressed or implied. Thank you for selecting my firm. Respectfully Yours, Dilip Khatri, PhD, SE Principal KHATRI INTERNATIONAL INC. 9/23/2021 PAGE 145 OF 186 K KHATRI INTERNATIONAL, INC. STRUCTURAL & CIVIL ENGINEERS DIAMOND BAR VILLAGE HOA PHASE 1 STRUCTURAL EVALUATION Of BUILDING “J” September 22, 2021 9/23/2021 PAGE 146 OF 186 KHATRI INTERNATIONAL, INC. Page 1 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ MEMORANDUM 2021-9-22 STRUCTURAL OBSERVATION REPORT BUILDING “J” STRUCTURAL OBSERVATION DATE: September 17, 2021 SITE ADDRESS: 23601 thru 23665 Golden Springs Dr, Diamond Bar CA, 91765 CLIENT: DIAMOND BAR VILLAGE HOA Attn.: Ms. Yvette Marie Allen, CMCA Certified Community Manager The Avalon Management Group, Inc., AAMC Office: 909-396-8000 Mobile: 951-239-6192 Email: yvette@avalonweb.com REPORT DATE: September 22, 2021. PROJECT: STRUCTURAL OBSERVATION REPORT STRUCTURAL CONDITION OF HOA. 1.0 SCOPE OF WORK 1.1 KH provides Structural Observation Report on the existing condition of the 11 residences and 1 club-house located inside the HOA. This report is for Building “J”. 1.2 This report is based on visual observations with no materials testing or structural analysis for seismic loading. 1.3 Original construction is 1974. 9/23/2021 PAGE 147 OF 186 KHATRI INTERNATIONAL, INC. Page 2 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ 2.0 FIELD OBSERVATION 2.1 The HOA has 12 existing buildings [i.e., 11 buildings with condominiums and 1 clubhouse]. 2.2 Building J: the building has a slab foundation. 2.3 The condos in Building J have exterior damage and mold, the stucco is damaged as shown in the Figures below. 2.4 The wooden rafters on Building J have damage due to termites and mold over the years which is damaging the wood on the roof excessively. 2.5 There are clear signs of foundation uplifting and saturated soil due to no drainage source which is causing ground movement and settlement. 9/23/2021 PAGE 148 OF 186 KHATRI INTERNATIONAL, INC. Page 3 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 1: Aerial View of the Property. (The Village at Diamond Bar). B A J I K H G C F E D Clu b h o u s e 9/23/2021 PAGE 149 OF 186 KHATRI INTERNATIONAL, INC. Page 4 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 2: Front View Elevation Entrance of the HOA. (East Direction). 9/23/2021 PAGE 150 OF 186 KHATRI INTERNATIONAL, INC. Page 5 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 3: Building (J) South Elevation. 9/23/2021 PAGE 151 OF 186 KHATRI INTERNATIONAL, INC. Page 6 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 4: Damaged stucco, signs of water leakage from underneath (West Elevation). 9/23/2021 PAGE 152 OF 186 KHATRI INTERNATIONAL, INC. Page 7 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 5: Damage on the roof wooden members observed because of mold and termite damages over the years (North Elevation). 9/23/2021 PAGE 153 OF 186 KHATRI INTERNATIONAL, INC. Page 8 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 6: Same as FIGURE 7. 9/23/2021 PAGE 154 OF 186 KHATRI INTERNATIONAL, INC. Page 9 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 7: South Elevation of Building J. 9/23/2021 PAGE 155 OF 186 KHATRI INTERNATIONAL, INC. Page 10 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 8: Damaged stucco, signs of water leakage from underneath (South Elevations). 9/23/2021 PAGE 156 OF 186 KHATRI INTERNATIONAL, INC. Page 11 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 9: Foundation uplifting and saturated soil and uncontrolled drainage causing ground movement and settlement. 9/23/2021 PAGE 157 OF 186 KHATRI INTERNATIONAL, INC. Page 12 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ 3.0 DISCLAIMER The basis for this report is a visual examination of the structure. Field conditions and unknown elements of a building make it hard and difficult to assess the structural capacity of a building and its structural elements to assess the resistance to future events such as earthquakes, landslides, subsidence, tsunamis, soil saturation, and other unknown events. The standard of care employed in this site visit and report is based on the industry standard. No warranties are provided either expressed or implied. Thank you for selecting my firm. Respectfully Yours, Dilip Khatri, PhD, SE Principal KHATRI INTERNATIONAL INC. 9/23/2021 PAGE 158 OF 186 K KHATRI INTERNATIONAL, INC. STRUCTURAL & CIVIL ENGINEERS DIAMOND BAR VILLAGE HOA PHASE 1 STRUCTURAL EVALUATION Of BUILDING “K” September 22, 2021 9/23/2021 PAGE 159 OF 186 KHATRI INTERNATIONAL, INC. Page 1 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ MEMORANDUM 2021-9-22 STRUCTURAL OBSERVATION REPORT BUILDING “K” STRUCTURAL OBSERVATION DATE: September 17, 2021 SITE ADDRESS: 23601 thru 23665 Golden Springs Dr, Diamond Bar CA, 91765 CLIENT: DIAMOND BAR VILLAGE HOA Attn.: Ms. Yvette Marie Allen, CMCA Certified Community Manager The Avalon Management Group, Inc., AAMC Office: 909-396-8000 Mobile: 951-239-6192 Email: yvette@avalonweb.com REPORT DATE: September 22, 2021. PROJECT: STRUCTURAL OBSERVATION REPORT STRUCTURAL CONDITION OF HOA. 1.0 SCOPE OF WORK 1.1 KH provides Structural Observation Report on the existing condition of the 11 residences and 1 club-house located inside the HOA. This report is for Building “K”. 1.2 This report is based on visual observations with no materials testing or structural analysis for seismic loading. 1.3 Original construction is 1974. 9/23/2021 PAGE 160 OF 186 KHATRI INTERNATIONAL, INC. Page 2 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ 2.0 FIELD OBSERVATION 2.1 The HOA has 12 existing buildings [i.e., 11 buildings with condominiums and 1 clubhouse]. 2.2 Building K: the building has a slab foundation. 2.3 The condos in Building K have exterior damage and mold, the stucco is damaged as shown in the Figures below. 2.4 The wooden rafters on Building K have damage due to termites and mold over the years which is damaging the wood on the roof excessively. 2.5 There are clear signs of foundation uplifting and saturated soil due to no drainage source which is causing ground movement and settlement. 9/23/2021 PAGE 161 OF 186 KHATRI INTERNATIONAL, INC. Page 3 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 1: Aerial View of the Property. (The Village at Diamond Bar). B A J I K H G C F E D Clu b h o u s e 9/23/2021 PAGE 162 OF 186 KHATRI INTERNATIONAL, INC. Page 4 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 2: Front View Elevation Entrance of the HOA. (East Direction). 9/23/2021 PAGE 163 OF 186 KHATRI INTERNATIONAL, INC. Page 5 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 3: Building (K) North Elevation. 9/23/2021 PAGE 164 OF 186 KHATRI INTERNATIONAL, INC. Page 6 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 4: Damaged stucco, signs of water leakage from underneath (West Elevation). 9/23/2021 PAGE 165 OF 186 KHATRI INTERNATIONAL, INC. Page 7 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 5: Same as FIGURE 4. 9/23/2021 PAGE 166 OF 186 KHATRI INTERNATIONAL, INC. Page 8 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 6: Same as FIGURE 7. 9/23/2021 PAGE 167 OF 186 KHATRI INTERNATIONAL, INC. Page 9 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 7: Damage on the roof wooden members observed because of mold and termite damages over the years (North Elevation). 9/23/2021 PAGE 168 OF 186 KHATRI INTERNATIONAL, INC. Page 10 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 8: Same as FIGURE 7. 9/23/2021 PAGE 169 OF 186 KHATRI INTERNATIONAL, INC. Page 11 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 9: Foundation uplifting, corrosion and saturated soil and uncontrolled drainage causing ground movement and settlement. Moss on the ground. 9/23/2021 PAGE 170 OF 186 KHATRI INTERNATIONAL, INC. Page 12 of 12 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ 3.0 DISCLAIMER The basis for this report is a visual examination of the structure. Field conditions and unknown elements of a building make it hard and difficult to assess the structural capacity of a building and its structural elements to assess the resistance to future events such as earthquakes, landslides, subsidence, tsunamis, soil saturation, and other unknown events. The standard of care employed in this site visit and report is based on the industry standard. No warranties are provided either expressed or implied. Thank you for selecting my firm. Respectfully Yours, Dilip Khatri, PhD, SE Principal KHATRI INTERNATIONAL INC. 9/23/2021 PAGE 171 OF 186 K KHATRI INTERNATIONAL, INC. STRUCTURAL & CIVIL ENGINEERS DIAMOND BAR VILLAGE HOA PHASE 1 STRUCTURAL EVALUATION Of CLUBHOUSE September 22, 2021 9/23/2021 PAGE 172 OF 186 KHATRI INTERNATIONAL, INC. Page 1 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ MEMORANDUM 2021-9-22 STRUCTURAL OBSERVATION REPORT “CLUBHOUSE” STRUCTURAL OBSERVATION DATE: September 17, 2021 SITE ADDRESS: 23601 thru 23665 Golden Springs Dr, Diamond Bar CA, 91765 CLIENT: DIAMOND BAR, VILLAGE HOA Attn.: Ms. Yvette Marie Allen, CMCA Certified Community Manager The Avalon Management Group, Inc., AAMC Office: 909-396-8000 Mobile: 951-239-6192 Email: yvette@avalonweb.com REPORT DATE: September 22, 2021. PROJECT: STRUCTURAL OBSERVATION REPORT STRUCTURAL CONDITION OF HOA. 1.0 SCOPE OF WORK 1.1 KH provides Structural Observation Report on the existing condition of the 11 residences and 1 club-house located inside the HOA. This report is for Building “Clubhouse of the HOA”. 1.2 This report is based on visual observations with no materials testing or structural analysis for seismic loading. 1.3 Original construction is 1974. 9/23/2021 PAGE 173 OF 186 KHATRI INTERNATIONAL, INC. Page 2 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ 2.0 FIELD OBSERVATION 2.1 The HOA has 12 existing buildings [i.e., 11 buildings with condominiums and 1 clubhouse]. 2.2 Clubhouse: the office has a slab foundation, and the clubhouse consists of swimming pool and jacuzzi/spa. 2.3 The spa/jacuzzi has minor cracking on the concrete slab. The swimming pool area has minor to moderate cracks on the concrete slab. 2.4 The stucco has mold in the north elevation of the clubhouse office. There are damages on the stucco which is due to leakage underneath. 2.5 There are clear signs of foundation uplifting and saturated soil due to no drainage source which is causing ground movement and settlement. 9/23/2021 PAGE 174 OF 186 KHATRI INTERNATIONAL, INC. Page 3 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 1A: Aerial View of the Property. (The Village at Diamond Bar). B A J I K H G C F E D Clu b h o u s e 9/23/2021 PAGE 175 OF 186 KHATRI INTERNATIONAL, INC. Page 4 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 2: Front View Elevation Entrance of the HOA. (East Direction). 9/23/2021 PAGE 176 OF 186 KHATRI INTERNATIONAL, INC. Page 5 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 3: Clubhouse office North Elevation. 9/23/2021 PAGE 177 OF 186 KHATRI INTERNATIONAL, INC. Page 6 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 4: The door of the sauna bath damaged from the bottom; termite damage is one of the root causes of the problem. 9/23/2021 PAGE 178 OF 186 KHATRI INTERNATIONAL, INC. Page 7 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 5: Crack on the concrete deck in the jacuzzi area. 9/23/2021 PAGE 179 OF 186 KHATRI INTERNATIONAL, INC. Page 8 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 6: Cracks on the concrete deck around the swimming pool area. 9/23/2021 PAGE 180 OF 186 KHATRI INTERNATIONAL, INC. Page 9 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 7: Same as FIGURE 6. 9/23/2021 PAGE 181 OF 186 KHATRI INTERNATIONAL, INC. Page 10 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 8: Mold on top of stucco. (North Elevation). 9/23/2021 PAGE 182 OF 186 KHATRI INTERNATIONAL, INC. Page 11 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 9: Damage on the stucco due to water leakage underneath the stucco and corrosion on the foundation slab due to saturated soil and uncontrolled drainage. 9/23/2021 PAGE 183 OF 186 KHATRI INTERNATIONAL, INC. Page 12 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 10: Cracks and corrosion on the foundation (North elevation). 9/23/2021 PAGE 184 OF 186 KHATRI INTERNATIONAL, INC. Page 13 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ FIGURE 11: Cracks and corrosion on the foundation slab and damage on the stucco (North Elevation). 9/23/2021 PAGE 185 OF 186 KHATRI INTERNATIONAL, INC. Page 14 of 14 STRUCTURAL & CIVIL ENGINEERS THE VILLAGE HOA, DIAMOND BAR CA R.C.E. # 40833, SE #4391, GENERAL CONTRACTOR #B555505 September 22, 2021 6440 Sky Pointe Dr., #140-299, Las Vegas, NV 89131 www.khatrinternational.com , dkhatri@aol.com Tel. (626) 351-4830; FAX (702) 441-7356 ____________________________________________________________________________________________ 3.0 DISCLAIMER The basis for this report is a visual examination of the structure. Field conditions and unknown elements of a building make it hard and difficult to assess the structural capacity of a building and its structural elements to assess the resistance to future events such as earthquakes, landslides, subsidence, tsunamis, soil saturation, and other unknown events. The standard of care employed in this site visit and report is based on the industry standard. No warranties are provided either expressed or implied. Thank you for selecting my firm. Respectfully Yours, Dilip Khatri, PhD, SE Principal KHATRI INTERNATIONAL INC. 9/23/2021 PAGE 186 OF 186