HomeMy WebLinkAboutCT 02-29; CASA LA COSTA; PAVEMENT DESIGN FOR CALLE ANDAR, VIA IRIS, VILLAS LA COSTA; 2004-07-224r aECEIVED
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PACIFIC SOILS ENGINEERING,
INC.
7715 CONVOY COURT, SAN DIEGO, CALIFOR NIA 92111
TELEPHONE: (858) 560-1713, FAX: (858) 560-0380
\IENL\
TRIMARK HOMES
613 West Valley Parkway, Suite 200
Escondido, CA 92025
July 22, 2004
Work Order 400942
Attention: Mr. Paul Faye
Subject: Pavement Design for Calle Andar (Stations 20+00 to
21+00), Via his (Stations 14+95 to 15+45), Villas La
Costa, City of Carlsbad, California.
References: Preliminary Geotechnical Investigation and Grading
Plan Review, Casa La Costa, City of Carlsbad, Cali-
fornia, by Pacific Soils Engineering, Inc., dated Oc-
tober 9, 2003 (Work Order 400942)
Gentlemen:
This report presents Pacific Soils Engineering, Inc.'s (PSE) engineering data and test results rela-
tive to the pavement design for Calle Andar(Stations 20+00 to 21+00) and Via Iris (Stations
14+95 to 15+45) at the Villas La Costa project in the City of Carlsbad, California.
One (1) representative sample of the subgradc soils was obtained for analyses from the subject
area. The applicable traffic index and project plans were obtained from Hunsaker and Associ-
ates.
The "R"-value test was conducted in accordance with Caltrans California Test 301. The sample
location and "R"-value result are summarized on Table I and Plate A.
CORPORATE HEADQUARTERS LOS ANGELES COUNTY RIVERSIDE COUNTY SOUTH ORANGE COUNTY
TEL: (714) 220-0770 TEL: (310) 325-7272 or (323) 775-6771 TEL: (909) 582-0170 TEL: (714) 730-2122
FAX: (714) 220-9589 FAX: (714) 220-9589 FAX: (909) 582-0176 FAX: (714) 730-5191
Work Order 400942 Page 2
July 22, 2004
Table I - "R"-Value Test Result
Sample Location (Station) Sand "R"-Value Equivalent
R-1 Calle Andar Station 20+35 12 24
The following pavement sections presented in Table II are recommended for private streets
(TI=5.Q).
Table II - Recommended Pavement Section
Design
Station Limits T.I. ,,R,'-
Asphaltic Concrete Class 2 Base
Value (inch) (inch)
Calle Andar Stations 20+00 to 21+00 5.0 24 4.0 4.0 Via his Stations 14+95 to 15+45
Placement of subgrade, base and pavement should be accomplished in accordance with the cur-
rent requirements of the City of Carlsbad and under the observation and testing of the project soil
engineer.
As a part of preparation for placement of aggregate base material, the subgrade should be suitably
moisture conditioned, processed and compacted to a minimum 95 percent of the laboratory
maximum density (ASTM: D 1557) to at least twelve (12) inches subgrade. After subgrade
compaction, the exposed grade should then be "proof'-rolled with heavy equipment to ensure the
grade does not "pump" and is verified as non-yielding. All utility backfill should have been
likewise compacted. Aggregate base material should be placed on the compacted subgrade and
compacted in-place to a minimum 95 percent of the laboratory standard obtained by California
Test Method 216E (modified).
PACIFIC SOILS ENGINEERING, INC.
Reviewed by:
Reviewed by: /
Work Order 400942 Page 3
July22, 2004
If you have any questions, please contact the undersigned.
Respectfully submitted
PACIFIC SOILS ENGINEERING, INC.
/7
By:
ANDRES BERNAL, RCE.62366
Project Engineer
C62366
'
!:\ &i)*Zi /L--.-
JOHJ IN . HANSON, CEG 990
Vice 1resident
Dist: (4) Addressee
(2) Cityof Carlsbad, Attn: Tim Fennesy
(1) Hunsaker & Associates, Attn: Eric Sampson
AB/JAC/JAH:bm:400942, July 22, 2004
. 2314
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PACIFIC SOILS ENGINEERING, INC.
PACIFIC SOILS ENG., Iñc
Pavement Design Data Sheet
Project: Villas La Costa
W.O.: 400942
Sample #: R-1
Approx. Location: Calle Andar Sta. 20+35
Approx. Limits: Cal le Andar Sta. 20+00 to 21+00
Via Iris Sta. 14+95 to 15+45
Depth: 0-1.o ft. '
Specimen A B C
moisture content,(%) 5.8 18.3 16.9
dry density,(pcf) 115.9 110.9 112.2
exudation pressure,(psi) 717 1 240 1 431
expansion pres., dial rd. 25 37 J 23
R-value by stabilometer 53 19 1 35
Exudation Pressure Chart
100
90
80 ---- ----- __ ___ ------- --------- --------------- -------
70
60
50
40
30
20
10
0 . 1
200 250 300 350 400 450 500 550 600 650 700 750 800
Exudation Pressure (psi)
Sand Equivalent Value: 12 R-Value @ 300psi: 24
PLATE A