HomeMy WebLinkAboutCT 83-03; CALAVERA HILLS, 5 LOTS; IN-PLACE DENSITY TESTS; 1983-06-302).#o3
SOUTHERN CALIFORNIA SOIL AND TESTING. INC.
6280 RIVEROALE ST. SAN DIEGO, CALIF. 92120 • TELE 280-4321 • P.O. BOX 20627 SAN DIEGO, CALIF. 92120
678 ENTERPRISE ST. ESCONDIDO, CALIF. 92025 • TELE 746-4644
June 30, 1983
Pacific Scene, Inc. SCS&T 14143
3900 Harney Street . Report No. 4
San Diego, California 92110
SUBJECT: Report of In-Place Density Tests, Proposed Lots 84 through 108,
Lake Calavera Hills Unit G, Carlsbad, California.
References: 1) Earthpackage Investigation, Lake Calavera Hills, Vil-
lage G, Prepared by Southern California Soil & Testing,
Inc., dated March 24, 1983.
2) Updated Geotechnical Investigation, Lake Calavera
Hills, Village G, Prepared by Southern California Soil
& Testing, Inc., dated April 26, 1983.
Gentlemen:
In accordance with your request, this report has been prepared to present
the results of the in-place density tests performed on the compacted fills
at the subject site by Southern California Soil. & Testing, Inc. These
tests were performed between June 6 and June 28, 1983.
AVAILABLE PLANS
To assist in determining the locations and elevations of our field density
tests and to define the general extent of the site grading for this phase
of work, we were provided with a grading plan prepared by Rick Engineering
dated January 29, 1983.
SOUTHERN CALIFORNIA SOIL AND TESTING,
.. . SCS&T 14143 ' June 30, 1983 Page 2
SITE PREPARATION
Prior to grading, the site was cleared of vegetation and debris. The
alluvial soils in, the canyon areas were then removed to firm natural
ground and stockpiled for furture use. Subdrains were then installed in
the areas shown on the approved plans. These clean-outs and subdrain
installations were examined by a representative of this firm prior to
backfilling. The removed soils and materials generated by the on-site
cuts were then placed in lifts not exceeding six inches in thickness,
moisture treated and compacted with heavy "construction equipment. These
grading operations were performed by Chi.icote, Inc.
'
FIELD TESTING
Field density ,tests were performed by a representative of Southern Calif-
ornia Soil & Testing, Inc. during the mass grading. operations. The den-
sity tests were taken according to A.S.T.M. Test 1556-74 and the location
and results of those tests are shown on the attached plates. The 10c4-
tions and elevations of the in-situ tests were determined in accordance
with their importance and the accuracy andproxirnity of the survey control
provided by other than"Southern California Soil & Testing, Inc.-representa-
tives. Unless otherwise noted, their locations and elevations were deter-
mined by pacing and hand level methods and should be considered accurate
only to the degree implied by the method used.
LABORATORY TESTS
Maximum dry density determinations were'performed on representative sam-
ples 'of the soils used in the compacted fills according to A.S.T.M. Test
1557-78, Method A. This method specifies that a four (4) inch diameter
cylindrical mold of 1/30 cubic foot volume be used and that the soil
tested be placed in five (5) equal layers with each layer compacted by
SOUTHERN CALIFORNIA SOIL AND TESTING. INC.
S
SCS&T 14143 June 30, 1983 Page 3
twenty-five (25) blows of a 10 pound harnér with a 18 inch drop. The
results of these tests, as presented on Plate Number 1, were used in
conjunction with the field density tests to determine the percent of
relative compaction of the compacted 'fill.
CONCLUSIONS
Based 'on the results of our field observations and test results, it Is our
opinion that the grading in this portion of the site was performed substan-
tially in accordance with local grading ordinances and the recommendations
contained in the referenced reports.
This ,report, covers only the work performed between June' 6 and June 28,
1983. Additional testing will be required for the utility trench back-
fills and street subgrade and base, materials.. Our opinions presented
herein are based on our observations and' the relative compaction tests
results.
As limited by'the scope of the services which we agreed to perform, our
opinions presented herein are based on our observation's and the relative
compaction test results. Our work was performed in accordance with the
currently accepted standards of practice and in such a manner as to pro-
vide a reasonable measure of the compliance of the mass grading operations
with the job requirements. No warranty, express or implied is given or
intended with respect to the services which we have performed, and neither
the performance of those services nor the submittal of this report should
be construed as relieving the grading contractor of his primary responsi- '
bility to conform with the job requirements.
If you should have any questions after reviewing this report, please do
not hesitate 'to contact this office.
SOUTHERN CALIFORNIA SOIL AND TESTING. INC.
DATE - 6-28-83 Ah JOB NO. 14143 Page.
ELEV. OR DRY DEN.
DEPTH OF MOIST. LBS.! SOIL RELATIVE
TEST.FT. Cu. FT. TYPE COMP.
C
TEST
NO. DATE LOCATI ON
1 6-6-83 Lot 84 250 N.G. 13.6 121.1 1 99.3
2 6-6-83 Lot 84 247 12.4 109.2 5 95.6
3 6-6-83 Lot 93 242 13.6 104.2 5 91.2
4 6-6-83 Lot 94 226 12.4 106.5 5 93.3
5 6-6-83 Lot 98 230 8.7 103.8 5 90.9
6 6-6-83 Lot 100 250 Slop 9.9 117.6 1 99.4
7 6-7-83 Lot 83
. 242 Slop 14.9 93.9 5 82.2 5
8 6-7-83 Lot 99 250 Slop 13.6 86.2 5
. IIIIY
9 6-7-83 Retest of No. 7- 245 16.3 104.7 5 91.7
10 6-7-83 - Retest of No. 8- 250 13.6 109.3 - 1 92.4
11 6-7-83 Lot 94 258 14.9 105.5 . 5 92.3
12 6-7-83 Lot 92 239 13.6 108.1 1 . 91.4
13 6-7-83 Elm Street 232 NG 11.1 102.9 5 90.1
14 6-7-83 Lot 97 239 14.3 104.1 5 91.2
15 6-7-83 Lot 100/101 232 NG 13.6 102.7 5 90.0
16 6-7-83 Lot 102 . 234 14.3 104.7 5 91.7
17 6-7-83 Lot 103 242 15.6 103.9 5 90.9
18 6-7-83 Lot 104 244 17.0 110.8 1 93.7
19 6-7-83 Lot 91 248 14.9 103.8 5 90.7
20 6-7-83 Lot 94 250 14.9 110.9 1 93.7
21 6-7-83 Lot 99 248 14.3 106.0 5 92.8
22 6-7-83 Lot 102 248 16.3 110.4 1 93.3
23 6-7-83 Lot 94 253 14.9 110.1 1 93.K.
24 6-15-83 Lot 94 250 SlopE 17.6; 97.6 5 85.4
25 6-15-83 Lot 84 256 SIOPE 16.9 96.2 5 94.2,
DATE_ 2883_S JOB NO. 14143 Page 2
TEST
NO. DATE LOCATION
ELEV. OR DRY DEN.
DEPTH OF MOIST. LBS.! SOIL RELATIVE
TEST.FT. CU. FT. TYPE COMP.
26 6-16-83 'Retest of No. 24 -- 242 Slopq 14.3 102.7 5 90.0
27 6-16-83 Retest of No. 25 256 Slopm 14.9 104.5 5 91.5
28 6-16-83 Lot 104 246 Slop 14.3 111.8 1 94.5
29 6-20-83 Lot 83 252 14.9 103.8 5 90.9
30 6-21-83 Lot 91 246 Slyp 9.9 103.7 5 90.8
31 6-21-83 Lot 95 242 Slop 12.4 104.0 5 91.1
32 6-21-83 Lot 101 238 Slop 13.6 102.6 5 90.0
33 6-21-83 Lot 93 250 15.6 107.8 5 94.4
34 6-21-83 Lot 91 254 14.9 113.4 1
35 6-21-83 Lot 100 244 15.6 113.5 1 96.0
36 6-21-83 Lot 104 251 14.9 110.8 5 97.0
37 6-23-83 Lot 84 256 13.6 112.6 5 98.6
38 6-23-83 Lot 92 256 14.9 113.9 5 99.7
39 6-23-83 Lot 94 256 14.9 109.1 5 95.5
40 6-23-83 Lot 97 254 14.9 107.2 5 93.9
41 6-23-83 Lot 100 253 13.6, 104.3 5 91.3.
42 6-23-83 . Lot 102 252 14.3 104.6 5 91.6
43 6-23-83 Lot 101 . • 254 FG 14.3 110.1 .5 96.4
44 6-28-83 Lot 98 ' 256 FG 14.3 111.4 5 97.6
45 6-28-83 Lot 95: 257 FG 12.4 108.2 5 94.8
46 6-28-83 Lot 91 257 FG 13.6 108.5 • 5 95.0
47 6-28-83 Lot 93 258 FG 136 105.6 5 • 92.4