HomeMy WebLinkAbout3188; COLLEGE BLVD EXTENSTION; R-VALUE TEST RESULTS; 1987-04-09APR
SAN OGEOTEcHNICAL CONSULTANTS INC
87
April 9,: 1987 I. •
INCORPORATED C
NBS-Lowry - - 'Job No., 056664-001-00-10
400 S. Ramona Avenue, Suite 116 Log No. .7-1423
Carona,California91719-1424 . -
Attention: Mr. Bruce Lyon .- .
SUBJECT:' R-VALUE TEST RESULTS/RECOMMENDED STRUCTURAL SECTIONS
College Boulevard Extension
Carlsbad, California -
Gentlemen:
Provided herein are the results of R-Value tests performed on
representative samples from the subject site and the
corresponding structural sections we recommend. The samples were
obtained under the directi6n f a repesentativefrm your
.firm. . The traffic indexof'8.5,..used in the calculations of. the
structural' sections, was obtained from Rick Engineering. The
test numbers, test. locations, stations represented by the test,
R-Value, and recommended base sections based on the proposed
asphalt thickness of 5 inche's are as follows
Test Test . • . - R- Base Thickness (Inches) No. Location Stations Represented Value 51•AC
1 8 + 25 0 + 00 through 15'+ 00- 9 . 18.5 2 21 +-00 15 -+ 00 through 28 ± 00 " <5 - . - 19.5 • - 3 39 '+ 50 .28+ 00 through 45 + 00.- 28 13 • 4 •.56 + 00 45-+ 00 through 58 + 50 12 17.5 •
0 5 72 + 50 - 76 +'50 through 68-F 00 16 16.5
6 79 + 00......... + 00 thràugh 81 '+ 00 16 •o * • 16.5
7 . 83 + 00 ' ''81 + 00 through 84 00 -.14 . • 17 .
8 62 +_25-- 58+ 50 through 68,+' 00 12 . . 17.5
9 96+ 50...., 94+ 50.through 97.+.50 8,., , 19.0 •
10 98+00 97+50through98+80 5 195
The R-value test results listed above are. representative of the
subgrade soil cànditions at exis-ting elevations-per plan. -Any
6455 NANCY RIDGE DRIVE • SUITE 200 • SAN DIEGO CALIFORNIA 92121 (619) 587 0250