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ENGINEERS
930 W. SUNSET BOULEVARD
LOS ANGELES, CALIFORNIA 90012
626-0101
Job No. F 65-956
F I N A L Date 3-7-67
RE, PORT ON COMPACTION Sheet 1 of
Diamond Bar Equestrian Center
Location Diamond Bar Blvd. and Cold Spring Lane, Diamond Bar, Calif.
Client Transamerica Development Company
Client's Address 2900 Brea Canyon Road, Diamond Bar, Calif.
Engineer Dutch Holzhauer- EngineegingContractor Strecker
General: Type of Soil: Native sand, silt, clay, siltstone and sandstone mixtures
Imported non
Before placing fill the existing surface was stripped of vegetation, scarified, watered as required, and com-
pacted. Inspection of the stripped surface indicated the area to be original ground. The determination of voids
or geologic weaknesses is not included in the scope of this report. Where natural slopes existed, benches were
cut into the slopes as the fills progressed, to provide a firm bond between natural ground and the comppacted fill.
The fill was placed in layers 6 to 8 inches in thickness, watered and compacted by aheeUafOOt
rollers and controlled routing of earth -moving equipment.
Inspections and field density tests were made by the Donald R. Warren Co. during the progress of the job. The
results and estimated locations of tests and limits of compacted areas are attached as part of this report.
Special Conditions:
The grading of the subject center conforms to the recommendations
presented in reports listed in our letter on Grading Plan Review
F 65-956) dated January 144 1966. It is understood that residen—
tial construction is not planned in this unit. Stabilization•.fills
and fill -over -cut slopes were constructed as indicated on the
attached plan.
SPECIAL CONDITIONS - Continued, _Page .
Recommendations: On the basis of inspection during grading, attached results of field density tests at selected
points, and results of stability tests on the soil types used, it is our opinion that the compacted areas are adequate for
design loads of 1, 500 pounds per square foot for residential footings, square or continuous, placed 12
inches below finished grade.
Note: A warranty is not implied, nor should one be construed.
Respectfully submitted
RH/bty
Distribution:
5 - Transamerica Development Company
2 - L.A. County Bldg. & Safety Div.
1 - Dutch Holzhauer Engineering, Inc. w/cei
1 - James E. Slosson and Assoc.
Review
DONALD R. WARREN CO.
P • DONALD R. WARRBN .
ENOINQRRS
Job No. F 65-956
Client Transamerica Development Co. Date 3-7-67
Diamond Bar Equestrian Center Sheet 2 of
RESULTS OF FIELD DENSITY TESTS
Test Field Moisture Field Density Maximum Density Percent
No. Percent Us./Cu. Ft. Us./Cu. Ft. Maximum
SPECIAL CONDITIONS - continued
Basic Soil Type (Without Rock)
Laboratory)
Optimum Moisture Maximum Density
in Percent p. c . f .
12.4 104
13.7 108
10.5 119
11.8 113
11.2 114
Sample Soil Percent Swell Under Percent Swell Under
No. Classification 60 p.s.f. Loading 650;p.s.f. Loading
3 siltstone 2.0 0.0
0.64siltyclay4.1
5 sandy silt clay 6.5 0.9
Soils.are slightly to moderately expansive.
It should be noted that this report is concerned only with the com-
paction of fills during the rough grading of the subject site, and
future cutting, filling or terracing that may be done is beyond our
control.
Field Investigation: Field density tests were taken at locations shown, according to A.A.S.H.O. Standard Test
Method T 147-49*Bag samples of representative fill materials were obtained for laboratory tests.
and the d-iven-ring undisturbed sample method.
Laboratory Tests: Moisture determinations were made on sealed samples from each field test. Compaction
tests were performed on representative soils according to A.S:I.M. Standard Test Method D 698.57T, modified
to use 25 blows of a 10-pound hammer falling 18 inches on each of 3 layers in a 4•inch diameter cylindrical mold
of 1 /30 cubic foot volume.
DONAU> R. WARREN
ENGINEERS
Transamerica
Job No. F 65-956 .
Date 3/2/67.
Sheet 1 of
RESULTS OF FIELD DENSITY TESTS
Tczt „ Date of Field Moisture
Percent
Field Density Maximum Density
Lbs./Cu. Ft. Lbs./Cu. Ft.
Percaat
Y®
R'a Test
1 1-13-66 10.5 96 104
108
92
93
2 13-66 17.4 101
zoo 104 96
3
4
1-13-66
1-13-66
10.0
13.4 102 108 94
5 1_13.66 3.1' 111
101
119
l08
93
93
6 1-14-66 12.1
98 l04 94
7
g
1-14-66
1-14»66
12.0
15.4 97 .: l04 93 `
9 1-14-66 12.2 113 119'
108
95
97
10 1-14A66 13.4 105
08119 97
12
1-14-66
1-14-66
11.4
11.0
105
109 9
13 1-17-66 12.7
14.5 109
119
119
92
92
14
1.5
1-17-66
1-1.7-66 13.3 110 119
11
92
933
16
17
1-17-66.
1-17-66
15.E
10.7
11].
104.1089
18 1-17-66 14.0 103 108
108
95
99
ti
19
20
1w17-66
1..17A66
13.4
16.1
l0 7
110 119 92
98
21
22
1-17-66
1-17-66
15.9
14.7
106
101
l08
104 93
l
23 1-17-66
f1-17-66
11.9
14.2
112
106
1i9.
108
94
98
t 24
25 1•,.18..66 13.4 107 113 95
95
26 1.18-66
7 ; : 1..18-66
9.9
1.2.1
107
115
113
119 97
28 1-18-66 10.1 106 113
119 '
94
92
29. ;
30 ' _
1»18-66
1,.18»66
10.0
3.30 6
110
11+ 119 06J
31 .; : 1-1.8-66 14.0 112 119
119 92
32
33 .;
1-18-66
1-18-66
15.5
19.0
110
l09 113 a6
r 34 . 1-19-66 12.9,
16.0
97.
108
104
119
93
91
35
36
1-19-66
1-19-66 19.0 105 113 93
37 : ;
38 ::;<
1-19 66
1-19-66
15.7
15.9
ill
109
113
114
98
96
39 1-19-66 16.1 112 114.
114
98
9g
40 1-19-66 13.5 112
a
Field Investigation: Field density tests were taken at locations shown, according to A.A.S.H.O. Standard Test
laborato
Method T 14749.a sampldrivees of undisturbed
osamplefor methotests.
fill
materials
werec. Laboratory Tests:
Moisture
determinations were made on scaled samples from' each field test. Compaction tests were performed
on representative soils according to 3 Standard Test Method Lu modified to use 25.
blows of a 10-pound hammer falling 18 inches on each of 3 layers in a flinch diameter cylindrical mold of 1 /30
cubic foot volume. A . A . S . H.0 . T 180-57
r ' DONALD R. WARREN
ENO1N1SHR®
Job No. 65-956 .
Client Transamerica Date 3/2/67
l
Tract No:
Sheet 2 of
RE, SIJLTS OF, FIELD DENSITY TESTS ..
test Date of Field Moisture Field Density
Lbs./Cu. Ft.
Maximum Density
Lhs./Cu. Ft.
Pereeai
Maximum
Test Percent
41 1-20-66 13.8 113 119
119
95
9342
4
1-20-66
1-20-66
14.3
16.8
111
lob 119 91
1-2o-66 21.1 103 114
114
90:
99
45 2o-66 15.4 113
l0 114 9516I-2o-66
20t7 -66
15.2
14.4 lob 114 95
tg 1®2 15. 2
l08
98112
99
1 9 1®20-66 14 :9 107
114 97Y50
51
1-20-66
1-20-66
15.7
14.7
110
104 108 96
52 1-20-66 8.1 103 108
114
95
96
53 i-2o.66 14.3 109
98 108 91
1 54
55
1®21-66
1-21-66
15.1
I5.2 103 108 95
56 1-21a66 12.0 log 114'96
114 98
57g 1,-21.66
1^21,-66
11.6
10.3.
111
107 114 9
59 1-21-66 11.7 101
108
108 .
114 ...
93
956o
61
h21-66
1-21-66
13.1
14.9 113 119 90
62
63
1-21-66
1-21-66
12.5 ..:
11.9
114,
116.1
119
I19 '
96
98
64 1-21-66 115.5 113 .: 119
119
95
95651-21-66 12.0 113.
114 9866 . 1-21-66 10.5 1I1
114 94
7 67
68
1-•21-66
1-21-66
12.6
13.8
107
108 114 95
69
70
21,-66 f
1-•21-66
11.5
12.5
113
115 '
119
119
95
97
y ; 71 .. 1-21-66 12.0 110
109
114
114
97
96
72
73
1-21-66
1.-21-66
13.5
11.5 114 119 90741-21-66 ll.l 102 11
119 96
75
76
1-21-66 ,
1-21-66
15.7
14.2 110 119 .. 92
77 21-66 10 . o l06 . 114 93
78
79
1-21-66
1-21-66
Io •7
14.1 ill 11I ii9 943
80 1-21-66 10.4 ; 117 119 98
s
Field Investigations Field density tests were taken at locations shown, according to A.A.S.H.O. Standard Teat Method
T 147•49.$ag samples of representative fill materials were obtained for laboratory tests. and
the driven"ring undisturbed on
sealed samples sample
method. from
each field test. Compaction t
Laboratory
Tests: Moisture determinations were on
representative soils according made
to
Standard Test Method 1=2a_= modified r
L,
u
tests
were performed touse25blowsof -a 10-pound hammer falling 18 inches on each of 3 layers in a 4 inch diameter cylindrical mold of
1 /30 cubic foot volume. A . A . S . H . 0 0 T
180-57 s
1 r DONALD R. WARREN
ENGINEER6.
F 65-956jobNo.
Client - Transamerica
Date 3/2/67
Tract No.
Sheet 3 : of
i RESULTS ®F . FIELD DENSITY TESTS
i
Test Date of Field Moisture ` Field Density Maximum Density
Lbs:/Cu.Ft. Lba./Cu.FL
P
MaXimnm
TestPercent
gl 1-21-66 10.0
8.7
117
109
1l9
113
98
96 .
82.
83.
21-66
1-21-66 11.9 110 119 92
96
84 2.-2.1 -66 13.4.. 109 113
108 93
85.
86
1-21-66
1,21-66
15.6
15.4
lol
111 119 93
87 1-21-66 13.5 110 113 k113 g9
88 1-24-66 15.4' ll1
lo0 108 93
89
90
1-24-66
1.24-66
11.5
12.9 103 113 91
96
91
92
1-24-66
1.24-66
12.9
12.0
l09
109
113
1 3 06
94
93 1-24-66 13.4 102 1 08
108 95
94
95
1-24-66
1-24-66
13.9
12.9
103
102 108 94
06 1-21-66 11;7 100
l04
l04
108 066 . G7
g8
1-24-66
1-24-66
12.6
11.1 97 104 93
93k991-24-66 14.0 ll1
5
119
lo0
101
1-24-66
1-24-66
5.3
1 4.3 105 io8 97
n.
102, 1.24-66 12.2 105
99
108
104,
97
95
103 `:
loll*-2-66
1-24-66 8.9
12.5 99 l04 95
94
1
05-
106
1-24-66
1-2LF-66
12.7
14,7
102
106
108
108 98
i 107: 1-24-66 12.2
14.3
109
109
119
114
92
96
5 103
109
1-25-66
1-25-66 16.1 l03 loll
104
99
97
la,:,
1 1`
661-25
1-25-66
15.1
12.1
101
l06 108 9869
112, , 1_25-66
1-25-66
10.9
13.4
104 .
102
108
l08 94
113
111 l 25 -66 14.3 112 119
108
94
90
115
116
1-25-66
1-25-66
12.0
15.6
97
101 1. 93
AX
1 7 . 1.25-66 13.8 110 114 97
97
T 118
119
1-25-66
1-25-66
13.9
15.7 1101 ii4 97
Yr. 120 1-25-66 10.0 106 114 93
z
9n Field Investigation: Field density tests were taken at locations shown, according to A.A.S.H.O. Standard Test
z Method T 147.49. Bag samples of representative fill materials were obtained for laboratory tests. and the driven -ring undisturbed sample method.
4 1GaborAtory Teats: Moisture determinations were made on sealed samples from each field test. Compaction
tests were performed on representative soils according to 1. Standard Test Method modified
x'= to use 25 blows of a 10 pound hammer falling 18 inches on each of 3 layers in a 4-inch diatroter cylindrical mold
oil /30 cubic foot volume. A . A . S . H . 0 . T `180-57 s
1 _ _..... •_.
ar
r
r
DONALD R. WARREN,
LNOINEERO
Job No. F 65-956
cli>tarmer9.ca Hera 3/2/67
TrnctNo Sheet of
r: RESULTS OF'FIELD DENSITY TESTS
Da e of Field Roisture Field Density Maximum Density PM==
h a. Test Percent Lbs./Cu. Ft. Lbs./Cu. Ft. 11larimum
7.211 2 6611.0 112 119 92. r122 "
1 25-66 8.1 110 119 92.- 123
1"25-66 9.4 112 119 94 124..
1-25®66 10.7 109 . 113 96 25
1-25-66 3.
26 9.
3 105 113 93 1
25-66 to ® log+ l08 96 27..
25®66 1112 106 108 98 r<<
z28 1-25w66 11.5 110 11tE 97 r
129 1-25-66 9.9 110 114 97,. 11
30 : ' X 2.6a6& 9.?1 108 114 95: L
3 ,,-26-66 10.9 109 lilt 96 3? .
1 26-66 1tt .5 116 119 98 33`' ?
26 " 6 9.6 99 104 S5 1
26 66 11.7 106 108 9S s5 ;
32E r 66 0 3 ; lob 1a 9 91 b2666
120 114 119 96 137 ' , _'
26-66 14:7 ; 115 119 96 138
y 11-26 66 11.6: 109 1i9 92 r
139 ).-25-66 10.0 105 . 113 93 1'
26-6 6 8 2 10 113 5 6 , . tc1-
26-
66 1 ," 9.3t 10 9 113 • 96 26=66 to ®
5 11 119 93 3 ` 1 26p66
12.1 112 119 94 11111. 1-26-
66 10.7 112 114 8 145 1-26'
66 13 e 3 : _ 110 1] 97 M .1-26-
66 12.1' 105 114 92 Y€t3 J.
1t7:
1
26-66 1 .9' 110 114 97 26 66 11. 5.
11tE 119 96 a 26 66 14.
2 ' 112 119 94 150. 1 .26-66
14+0•; 97 1o4 93 . x, 15 1-26
66 10.3 ; 108 11jt 95 f 5 2 12766
to . 3 107 ti. 114 94 27m66 7,2 104
Y '':° 114 '- t gl.- r 15t` 1 27
66 8.0' 95 104 91 3 55 . 1-27'
66 11.2 99 104 95 55 1.27 G6
10.4 105 114 92 157 1' 27*66
9.9 1l0 114 97 153 1-27-66
10.5 102 114 90 f 159 1"27-
66 9.2 112 114 98 a6o, .1-»27-66
9.4 105 114 92 Field Investigation: Field density
tests were taken at locations shown, according to A.A.S.H.O. Standard Test Method T 147-49.*
Bag samples of representative fill materials were obtained for laboratory tests. and the driven -ring
undisturbed sample method. IxLoratory Tests: Moisture determinations
were made on sealed samples from each field test. Compaction Tests were performed on
representative soils according to A. Standard Test Method-&-6 , modified to use 25 blows
of a 10-pound hammer falling 18 inches on each of 3 layers in a 4-inch diameter cylindrical mold of 1/30 cubic
foof volume. A . A . S , H . 0 . T 18o-57.,
L
DON ALO R. WAARRN
ENGINECRO
rob rro: 65-956
Bent Transamerica Date 3/2/67
I"rnct No Sheet 5 - of
RESULTS OF FIELD DENSITY • ESTS . ,
1
n , , ,. ..
Date - o Field Moisture Field Density Maximum Density ,
nPerceni -
F :
TestPercent Lba./Cu. Fe. lLbs./Cu. Ft. itlasi um 27®
66 8.9 112 114 98 a2 .
7- 1-27-66 11.1 112 114 98 63 ;
1®27-66 11.9 114 119 96 164
66 6.9 101 108 93 65
r28 66 8.9 108 114 95 1
28-66 8.2 llb, 114 97' y ` '
I;67 1 28-66'. 10 #7 107 114 94 16s.
1-28-66' 12.0 109 114 96 69-
28®66 10.9 103 111+ . 90 90.
701-28-66 8.1 103 114 r
17 1 t; 1_28a66 9: o 99 101 95 t
3,
72 1-28-66 10.1 96 lo4 92 t
73 1-28r66 13.4` 107 119 90, 17;.
1-28-66 14.3 111 119 93 175::
128-66 11.E 98 l04 94. 70 1-
28-66 14.2, 106 114 93 r 1, 28®
66 12.6 l07 114 94 28-66
13.5 s 109
1i 4 96. 79 , 1-
28-66 12 , o log 114 96 80 s .
2- J 66 ; 404. 108 114 r ;. 95'' 2 3
66 9.9 l02 114.90. 2a3=66
a1.7 105 114 92 E 83
23®66 13.5. 106 114 93 r `.3
84 2' -' 66 16.1 109 114 96 r 85
r ,,
2-3-66 17.5 106 114 93 2 3..
66, 16.0 111 114 97 2s3466 20.
5` 102 lo4 98 2' 83
h 2-3-66 15 , 2 102 114 90 fs14 89
2;366 17.1 107 114 9! , 3=66 ^: 12.
6 l09 114 96 r 12:o
9 7a9 12 1144`
24m6 9_ 14.9 low!
114 O r r 1 S :.
d•.
d4 !.. 66
r
ll • 1- 101 104 91% 1956 i1.6
97 104 93 10, 2 4-
66 6.3 loo 104 96, 7 2--4-
66 15:.5. 109 114 O6 7Q8 '4-66
10.0 96 104 92 c a99 2
1+-66 12.9 109 A14 g6, 2qo 2-9-
66 17.E 102 114 90 ielth investigation: Field
density testa were taken at locations shown, according to A.A.S.H:O; -Standard Test ivletliod T 147
99S Bag samples of representative fill materials were obtained for laboratory tests an d the
driven ring undisturbed sample Method.' L,-1iiratory Testa:
Moisture determinations were made on sealed samples from each field test.. Compaction tests were performed
on representative soils according 'to } Standard Test Method $L;`r modified to Use, 25
blows of a 10•pound hammer falling 18 inches on each of 3 layers in a flinch diameter cylindrical mold r I of
1/30 cubic foot volume. A . A . S . H. o . ' T 1$0-5?'
DONALD R. WARREN
ENOtNEERB
Job No. F 65-956
Client Transamerica
Date 3/2/67
Tract No.
Sheet 6 of
RESULTS OF FIELD DENSITY TESTS
Teat Date of Field Moisture Field Density
Lbs./Cu. Ft.
Maximum Density
Lbs./Cu. Ft.
Percenit
Maairnum
No. Test Percent
201 2-9-66 10.6 102
108
114
114
90
95
202
203
2-9-66
2-9-66
12.1
18.2 lo6 114 93
204 2-9-66
2-9-66
17.0
16.1
107
104
114
114
94
91
205
206 2-9-66 17.1 lob 114 93
207 2-9-66 18.8 100 lo8
lo8
93
952082-9-66 19.8 103
114 90
209 2-9-66 16.3 102
114 92
210
211
2-10-66
2-lo-66
20.5
20.8
105
104 114 91
212 2-10-66 12.6 110 114 97
95
213 2-10-66 17.0 107 113
1o4 962142-10-66 20.5 100
lo4 97
215
216
2-lo-66
2-10-66
13.9
18.6
101
105 114 92
217 2-10-66 12.2 112 114
114
98
942182-lo-66 12.5 107
114 972192-10-66 10.7 111
98 104 94
220 2-10-66 20.0
1o4 114 91
221
222
2-10-66
2-10-66
10.7
9.6 102 108 94
223 2-10-66 9.8 95 lo4
114
91
972242-10-66 10.9 ill
108 94
225 2-11-66 10.7 102
114 972262-11-66 11.5 110
lo8 93
22'7
228
2-11-66
2-11-66
11.7
13.4
101
108 114 95
229 2-11-66 12.5 107 114
114
94
90
230
231
2-11-66
2-11-66
11.2
11.6
102
95 lo4 90
232 2-11-66 14.o lo8 113 96
96
233 2-11-66 13.3 108 113
98
234 2-11-66 13.5 ill 113
119 97
235
236
2-11-66
2-14-66
6.8
14.4
115
105 114 92
237 2-14-66 16.8 105 114
lo8
92
932382-14-66 16.1 100
lob 93239
240
2-14-66
2-14-66.
11.7
13.8
100
110 113 97
Field Investigation: Field density tests were taken at locations shown, according to A.A.S.H.O. Standard Test
Method T 147.49 13ag samples of representative fill materials were obtained for laboratory tests.
and the driven -ring undisturbed sample method.
determinations were made on sealed samples from each field test. CompactionLaboratoryTests: Moisture
on representative soils according to a*=M. Standard Test Method am=6UA modified
tests were performedtouse25blowsofa 10•pound hammer falling 18 inches on each of 3 layers in a 4-inch diameter cylindrical mold
of 1/30 cubic foot volume. A . A . S . H.0 . T 18o-57 ,
1
r -
DONALD R. WARREN
ENGINEER®
Client Transamerica
Tract No.
RESULTS OF FIELD DENSITY TESTS
Job No. F b5-9 6
Date 3/2/67
Sheet 7 of
Test Date of Field Moisture Field Density Maximum Density Percent
No. Test Percent Lbs./Cu. Ft. Lbs./Cu. Ft. Maximum
241 2-14-66 16.8 lo8 113 96
242 2-14-66 17.5 102 113 90
248 2-16-66 11.0 109 113 96
249 2-16-66 14.9 107 113 95
250 2-16-66 11.5 100 lo8 93
251 2-16-66 16.1 110 114 97
252 2-16-66 14.2 lo6 lo8 98
253 2-16-66 11.2 99 lo4 95
254 2-16-66 10.1 lo6 113 94
255 2-16-66 13.4. 107 113 95
256 2-16-66 15.1 98 lo8 91
257 2-16-66 14.9 107 108 99
258 2-16-66 14.3 109 114 96
259 2-16-66 13.1 lo8 114 95
Field Investigation: Field density tests were taken at locations shown, according to A.A.S.H.O. Standard Test
Method T 147.49.4lBag samples of representative fill materials were obtained for laboratory tests.
and the driven -ring undisturbed sample method.
Laboratory Tests: Moisture determinations were made on sealed samples from each field test. Compaction
tests were, performed on representative soils according to A Standard Test Method R. modified
to use 25 blows of a 10-pound hammer falling 18 inches on each of 3 layers in a 4-inch diameter cylindrical mold
of 1 /30 cubic foot volume. A . A . S . H.O. T 18o —57 ,