HomeMy WebLinkAboutCT 83-03; CALAVERA HILLS, 5 LOTS; IN-PLACE DENSITY TESTS; 1983-07-15SOUTHERN CALIFORNIA SOIL AND TESTING, INC.
6280 RIVERDALE ST. SAN -DIEGO, CALIF. 92120 • TELE 2804321 • P.O. BOX 20627 SAN DIEGO, CALIF. 92120
678 ENTERPRISE ST. ESCONOIDO, CALIF. 92025 T E L E 746-4544
July 15, 1983
Pacific SceneInc. SCS&T 14181,
3900 Harney
0
Report No.. 2
San Diego, California 9.2110
SUBJECT: Report of In-Place Density Tests, Lake Calavera Hills, Village
C and D, Unit No. 2 Models, Lot Nos. 219-224, Carlsbad, California.
REFERENCE:
1.)-.Preliminary Geotechnical Investigation for the Proposed Lake
- Calavera Hills Units C and D, Prepared by Woodward-Clyde
Consultants, dated June '30, 1980.. -
2..) Earthpackage Investigation, Carlsbad Tract 81-47, Prepared
-by Woodward-Clyde Consultants, dated July 27, 1982.
Gentlemen-:
In accordance with your request, this report has been prepared to present
the results of the in-place density tests performed on the prepared natural
ground and compacted fills at the subject site by Southern. California Soil &
Testing, Inc. These tests were performed between May 24 and July 12, 1983.
AVAILABLE PLANS
To assist in determining the locations and elevations of our filed 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.
SOUTHERN CALIFORNIA SOIL AND TESTING, INC1 )j;2v.7
SCS&T 14181 July 15, 1983 , Page Two
SITE PREPARATION
Prior to grading the areas to be filled were cleared of debris and vegetation.
The loose alluvial soils in the canyon areas and topsoils were removed to
firm natural ground. Subdrains were then installed in the approximate
locations shown on the approved grading plans. The alluvial 'clean-outs and
subdrain installations were examined by representatives of this office' prior
to backfilling. Benchs and keys were then established in' the existing hill-
sides in order to support the' new fill soil's. The previously removed soils
and materials generated by the on-site cuts were then placed, watered and
compacted with heavy construction equipment. These grading operations were
performed by Chilcote, Inc.
FIELD TESTING
Field density tests were perfomed by a representative of Southern California
Soil & Testing, Inc. The density 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 locations and elevations of the in-situ tests were
determined in accordancewith their importance and the accuracy and proximity
'of ,the survey' control provided by other than Southern California Soil &
Testing, Inc. represe'ntative. Unless otherwise noted, their locations and
elevations Were determined 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 samples
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 twenty-five blows of a
10 pound hammer with a 18 inch drop. The results of these tests, as
presented on Plate Number 1, were used in conjunction with the field density
SOUTHERN CALIFORNIA SOIL A'ND TESTING, INC.
SCS&T 14181 . July 15, 1983 . Page Three
tests 'to determine the percent of relative compaction .of the compacted fill.
CONCLUSIONS
Based on the results of our field testing and observations services, it is
our opinion that this portion of the site has been graded substantially in
accordance with local grading ordinances and the recommendations contained
in the referenced reports. This report covers only the work performed
between May 24 and July 12, 1983. Additional testing will be required for
the remaining areas of this site which is to receive additional fills. 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 observations'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 provide
a reasonable measure Of the compliance-of the mass gradingoperations 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 this primary responsibility
to conform with the job requirements.
If you should have any questions after reviewing this report, please do not
hesitate to contact this office.
This opportunity to be of professional service is sincerely appreciated;
Respectfully submitted,
SOUTHERN CALIFORNIA SOIL & TESTING, INC.
Rober R. Russell, R .C.E. #32142
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S DATE _117-14-83 JOB NO. 14181
TEST
NO. DATE LOCATION
ELEV. OR DRY DEN.
DEPTH OF MOIST. LBS.! SOIL RELATIVE
TEST.FT. % Cu. FT. TYPE COMP.
1 5-24-83 Lot 224 258.0 NG 11.7 107.8 4 90.6
2 5-24-83 , Lot 223 261.0 11.1 110.3 4 92.7
3 5-25-83 Lot 217 287.0 13.6 113.8 4 95.6
4 5-25-83 Lot 217 288.5 11.7 116.9 4 98.2
5 5-26-83 Lot 217 298.0 13.6 116.5 3 95.5
6 5-26-83 Lot -217 298.0 14.3 118.5 3 97.1
7 5-26-83 Lots, 217/218 '
, 300.0 14.3 112.9 3 . 92.5
8 5-27-83 . Lot 218 304.5 11.1 109.1 4 91.7
5-27-83 Lot 217 309.0 11.7 113.4' 3 93.0
10. . 5-27-83 . Lot 219 300.0 13.6 111.7 4 93.7
11 5-27-83 Lot 218 ' 313.0 12.4 114.2 3 . 93.6
12 5-31-83 Lot 217
, ' 314.0 11.1 114.3 3 . 93.7
13 6-18-83 . Lots 223/224 ' 263.0 9.9 110.7 . 3 90.7
14 6-18-83 Lot 224 , 266.0 8,7 112.8' 3 92.5
15 6-23-83
,
Lot 221 297.0 16.3 111.5 5 97.6
16 6-23-83 Lot 223 ' 302.0 14.9 107.0 5 93.6-
17 6-23-83 ' Lot 222 ' 300.0 14.9 103.4 5 , 90.5
18 6-23-83 Lot 222 ' 302.0 13.6 104.6 5 91.6
19 6-23-83 , Lot 223 304.0 14.9 104.7 ' 5 91.7
20 6-23-83 , Lot 221 . , 307.0 14.3 111.7 5 97.8
21 6-24-83 Lots 221/222
*
309..0 14.9
/
' 110.4 4 96.6
22 6-2443 Lot 224 278.0 15.6 106.1 5 92.9
23 6-24-83 Lot 219 311.0 14.3
,
107.3 5 93.9
24 6-27-83 Lot-224 280.0 14.3 110.0 5 96.3
25 6-27-83 . Lot 222 312.0 15.6 108.2 ' 5 94.7
26 6-27-83 Lot 220 314.0
,
14.9 103.8 5 91.0
27 6-27-83 Lot 221 415.0 15.6 110.6 5 , 96.8
S DATE _j_mik JOB NO. 14181 Page Two
TEST
NO. DATE LOCATION
ELEV. OR DRY DEN.
DEPTH OF MOIST. LBS.!
TEST.FT. CU. 'FT.
0/
SOIL RELATIVE
TYPE COMP.
28 6-27-83 Lot 219 317.0 15.6 113.1 5 99.0
29
g
6-27-83 Lot 224 283.0 14.3 112.5 5 98.5
30 0 6-30-83 Lot 222 317.0 14.3 104.8 5 91.8
31 0 6-30-83 Lot 219 319.0 13.0 104.8 5 91.8
32 6-30-83 Lot 223 315.0 15.6 112.4 5 98.4
33 6-30-83 Lot 218 317.0 15.6 111.8 5 97.6
34 6-30-83 Lot 223 317.0 .15.6 106.0 5 92.9
35 6-30-83 Lot 224 292.0 13.6 113.3 5 99.2.
36 .7-6-83 Lot 224 295.0 15.6 105.9 5 92.7
37 7-6-83 Lot 222 319.0 15.6 106.2 5 92.9
38 7-6-83 Lot 219 Slope 292.0 14.9 . 104.7 5 91.7
39 7-6-83 Lot 217 Slope 300.0 12.4 103.1 . 5 90.3
40 7-6-83 Lots 230/229 320.0 14.9 107.1 5 93.8.
41 7-6-83 Lots 228/229 322.0 FG 13.6 106.5 . 5. 92.3
42 7-6-83 Lots 225/227 •. . 320.0 FG 12.4 109.5 5 . 95.8
43 7-12-83 . . Lot 226 320.0 FG 10.5 104.4 5 91.4
44 7-12-83 . Lots 218/219 321.0 FG 10.1 102.9 5 90.1
45 7-12-83 Lot 225 • ' 319.0 12.5 118.0 4 98.2
46 7-12-83 Lot 224 . 316.0 8.3 111.2 5 98.3
47 7-12-83 Lot 224 319.0 14.2 108.2 5 94.7
48 7-12-83 Lot 218 Slope 293.0 13.7 112.4 5 98.5
49 7-12-83 Lot 224 Slope 307.0 8.4 114.4 4 95.1
SOIL TYPE OPTIMUM MOISTURE MAXPUM DRY D NSITY
(PERCENT) . (LI S./CU.FT )
3 10.5 . 122.0
4 10.9 120.2
5 10.7 114.2