HomeMy WebLinkAboutCT 74-21; CARLSBAD OAKS BUSINESS PARK; PAVEMENT SECTIONS; 1987-11-12I 74-t/ b 6-7
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SAN DIEGO GEOTECHNICAL CONSULTANTS, INC.
SOIL ENGINEERING & ENGINEERING GEOLOGY
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Davison and Ferguson Job No. 05-2370-013-00-30
19600 Fairchild, Suite 240 Log No. 7-2509
Irvine, California 92715
Attention: Mr. John Moreno
SUBJECT: PAVEMENT SECTIONS
Carlsbad Tract 74-21
Carlsbad Oaks Business Center
Lots 10 - 13
Carlsbad, California
Gentlemen:
This letter is in response to the review of our R-value and
pavement section letter by Dan Clark of the City of Carlsbad.
As requested, we are providing the R-value test reports. The
R-value tests were performed according to CALTRANS Test Method
301. We are enclosing a copy of our structural section -
calculations. In the past, the City of Carlsbad has not required
that the calculations be submitted.
Class II base should be specified as per CALTRANS 26-1.02B.
In our opinion, the request for sand equivalent (SE) tests on the
subgrade material is not warranted. An SE is not useful for
detrmining subgrade quality. The CALTRANS pavement design method
does not incorporate the SE.
6455 NANCY RIDGE DRIVE • SUITE 200 • SAN DIEGO, CALIFORNIA 92121 • (619) 587-0250
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Davison and Ferguson - Job No. 05-2370-013-00-30
November 12, 1987 Log No. 7-2509
Page 2
If you have any questions, please feel free to contact the
undersigned.
Very truly yours,
SAN DIEGO GEOTECHNICAL CONSULTANTS, INC.
A/;A /,0;",
Robert M. Pintner Anthony F. elfast, P.E. C 40333
Staff Engineer Registration Expires: 3-31-91
Chief Engineer
RMP /AFB/pb
Attachments: Calculations _ESSI R-Value Test Results F.
Distribution: (1) Addressee
(1) City of Carlsbad
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