HomeMy WebLinkAbout; Laguna Riviera Unit 2 Lots A-B; Soils Report; 1967-07-07WOODWARD.CLYDE*SHERARD &ASSOCIATES
Southern Califomb Op2rati0ru
- CONS”LT,NQ ENOlNEERD AND aEOLOOlsTs
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3467 Ku* str..t July 7, 1967 S." 0I.W C.llfOrni. 02110 Project No. 66-237-2
‘714) 224-2911
- Kamar Construction Company
325 Elm Avenue, P.O. Box 71
Carlsbad, California
LAGUNA RIVIERA ESTATES UNIT NO. 2
LOTS A AND B -
CARLSBAD, CALIFORNIA
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In accordance with the request of Mr. Jerry L. Rombotis of your firm,
we have provided soil engineering services in conjunction with the
recent grading of the subject site. These services included
observation of the grading and compaction procedures,and taking
compaction tests in the fill in place.
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Site preparation, compaction and testing for the subject fill were
done between June 22 and 29, 1967, in accordance with the Earthwork
Specifications and recomnendations presented in our letter dated
January 10, 1967.
Fill was placed, compacted and tested on Lots A and B. Previous
fill placed on these lots was done during the period between April 7
through 13, 1967.
As the site grading proqressed, the compaction procedures were
observed and compaction tests were made to determine the relative
compaction of the fill in place. Field observations and compaction
test results indicate that the fill has been compacted to 90 percent
or more of maximum laboratory density. The approximate locations of
all compaction tests to date and the limits of compacted fill are
shown on the attached Figure 1. The results of compaction tests taken
during previous grading on the subject lots have been reported in our
letter dated May 22, 1967.
Laboratory tests to determine moisture-density relationships, maximum
dry density, optimum moisture content, grain size distribution,
plasticity characteristics and strength characteristics were performed
on representative samples of the material used for fill. The results
of laboratory tests have been presented in our report dated May 12. 1967,
for Laguna Riviera Estates Unit No. 1.
Laboratory tests indicate that nonexpansive fill was placed within
2 feet of rough grade.
-- ls4!5 wilshim Blvd., La h&a. auf. eoo17
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7E.3NO.htWi&0WV4lUf.ooddB (714) 6saa18
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Kamar Construction Company
Project No. 66-237-2
July 7, 1967
Page 2
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A visual inspection of the subject site at the completion of grading
indicates that potentially expansive soil is not evident at finish
grade on either lot.
- Footings for residential structures placed on nonexpansive properly
compacted fill may be designed for a bearing pressure of 2,000 pounds
per square foot at a depth of 12 inches below rough lot grade.
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The elevation of compaction tests shown as finished grade (F.G.) tests
correspond to the elevations shown on the grading plans for Laquna
Riviera Tract, Unit No. 1, City of Carlsbad, California, dated
January 7, 1967, prepared by Raymond R. Ribal, Civil Engineer.
This final report covers the fill placed under our observation during
the dates specified above. Additional fill placed after these dates,
as well as the backfill in utility trenches located within 5 feet of a
building and in excess of 5 feet in depth, should be compacted under.
the observation of this office and tested to assure compliance with
the earthwork specifications of the project. This office should be
contacted at least 24 hours prior to backfilling operations. Utility
service trenches within 5 feet of a buildinq that are perpendicular
to the building footinqs and are less than 12 inches wide and less than
3 feet deep are not subject to this recommendation.
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Structures that will not tolerate differential settlements (such as
foundations, swimning pools, concrete decks, walls. etc.) should not be
located within 5 feet of the top of a slope. Footings located closer
than 5 feet from the top of the slope should be extended until the
bottom edge of the footing is 5 feet horizontally from the outside face
of the slope.
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The inspections and tests of compaction made during the period of our
services on the subject site were in accordance with the local acceptable
standards for this period. The conclusions or opinions drawn from the
tests and site inspections apply only to our work with respect to grading
and represent conditions at the date of our final inspection.
We will accept no responsibility for any subsequent changes made to the
site by others or by uncontrolled action of water or by failure of others
to properly repair damages caused by uncontrolled action of water.
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Kamar Construction Company
City of Carlsbad Buildinq Inspection Dept.
WOODWARD - CLYDE - SHERARD AND ASSOCIATES cmmlalusdludF- Ewud-
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Cc - IPACTION ,TEST RESULTS -
- .1q NAHP Laguna Riviera Estates Unit No. 2
JOB N"Y~UI 66-237-2
DAT=' July 7, 1967
- DA-ma June 22, 1967 through June 29, 1967 PAOC 1 or 2
une 22
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dune 23
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une 26
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-Jne 29
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SEE FIGUdE NO. 1
LOT:
9 II A II 37.0' 10.4
10 "B" 39.0' 12.9
11 II A II 39.0' 13.1
12 II B II 41.0' 13.6
13 "A" 41.0' 18.3
14 "B" 43.0' 17.9
15 "B" 45.0' 14.9
16 "B" 47.0' 12.5
17 16 "B" 47.0' 14.0
18 ,I B II 49.0' 18.5
19 "A" F.G. 43.0' 8.4
20 II B II F.G. 53.0' 11.1
109.0 116.5 9 3’3
108.3 '116.5 92.9
107.2 116.5 92.0
108.1 116.5 92.8
101.0 111.5
106.0 114.0
106.4 114.0
103.5 116.5
106.6 116.5
113.0 116.5
117.2 120.5
117.2 120.5
90.7
93.0
92.3
88.8
91.5
97.3
97.2
97.2
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C IPACTION TEST RESULTS -’
- JOB NILIS Laguna Riviera Estates Unit No. 2 - STREET TESTS :DAT= July 7, 1967
JOB NUYBLR 66-237-2
- DATES June 22 through June 29, 1967 ,PAOE 2 or 2 ,,,,, niw - y\n *“ym;” 1111mmT LouItoll u%YLL EE. Iv rv mmmn ."~uw~mv -ToYE 6OYCIcIIO" 0, Y 0, IAm. DvlL
June 27 S-5 I Street Opp. Lot "A" 45.0' 17.7 101.2 111.5 90.7
S-6 I Street Opp. C.L.
Lot "A" & "B" 50.0' 15.2 109.5 116.5 94.1
s-7 I street Opp. Lot "B" - 53.0' 17.0 109.0 116.5 92.8
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FIG. 1
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LEGEND CG~~~PACTI ON TEST LCCATI ONS /
[NDICATES APPROXlMATE LOCATION OF TEST. I -~-
LAGUNA RIVIERA ESTATES UNIT 2,‘~LOTS A & B
INDICATES CRlClNAL GROUND SURFACE PROJECT NO. 66-237-2 CONSOUR. 7-7-67 Lcv