HomeMy WebLinkAboutCT 81-06B; POINSETTIA VILLAGE; PAVEMENT DESIGNS; 1987-12-090,4, 3467 Kurtz Street San Diego, California 92110 (619) 224-2911
December 9, 1987
Project No. 875 1264W-EWO2
Poinsettia Associates
do Holmes and Reynolds Development Company
2398 San Diego Avenue
San Diego, California 92110
Attention: Mr. Fred Delaney
fice, CM-66
Consulthnts Woodwa
PAVEMENT DESIGN
AVENU)A ENCINAS
POINSETTIA VILLAGE
CARLSBAD, CALIFORNIA
Gentlemen:
In accordance with the request of Mr. Jack Noltan of McCarthy Pacific Crest
Construction and the requirements of the City of Carlsbad, we have made an evaluation
of the subgrade conditions at the easterly portion of the subject street. For our evaluation,
we obtained a sample of subgrade material and a R-value on this soil was performed. We
understand that the City of Carlsbad Engineering Department provided the traffic index
for the street.
-
The results of the R-value test, as performed by American Engineering Laboratories, Inc., p () indicate that the soils have an R-value of 76. The TI provided us by Mr. Jack Noltan, was • 8.0. As indicated, the street will be widened by 4 feet; the pavement recommendation is
/ for this 4-foot pavement section at the extreme eastern portion of the roadway adjacent to
/ Poinsettia Village. In our calculations we assumed that Class II aggregate base with a oil
' minimum R-value of 78 would be used as the base material. 0
Based on the criteria stated above, we recommend that the pavement section consist of 4
- / 1/2 inches of asphaltic concrete placed over 6 inches of Class II aggregate base. We 3 V recommend that the upper 6 inches of subgrade be compacted to 95 percent relative * compaction as compared to ASTM D1557-78.
We further recommend that mix designs be made for asphaltic concrete by an engineering
company specializing in this type of work and that AC paving operations be inspected by
/ a qualified testing laboratory. It is important that adequate surface drainage be provided
V to reduce ponding and infiltration of water into the subgrade materials. We recommend
that Class II aggregate base conform to the latest edition of the State of California
Standard Specifications, Section 26-1.02B. Asphaltic concrete should conform to the
Standard Specifications, Section 29-2.01, for the Asphalt, and Section 39-202(B), for the
Consulting Engineers, Geologists 4
_____
00 Poinsettia Associates WowartClYde Consultants
Project No. 875 1264W-EWO2
December 9, 1987
Page 2
aggregate. The aggregate base material should be placed at a minimum relative
compaction of 95 percent.
If you have any questions, please give us a call.
Very truly yours,
WOO WARD-CLYDE CONSULTANTS
Richard P. While II?4
R.E. 21992 21992
RPW/rlg Exp. -
CIV\-
(1) Poinsettia Associates OF CA0i
(3) McCarthy Pacific West
b/rpw
.. American Engineering Laboratories, Inc.
7940 Ajjons Drive, Suite A, San Diego, CA 92126
(519)695-3730
RESISTANCE "R" VALUE
CA TEST 301
Report AEL #7M-314 Date December 03, 1987
File No. 521 R.V.# 771
Client W000WARD—CLYDE CONSULTANTS
Attn: Dick Wilde
Project Designation Poinsettia Village
Sample Identification Sub Grade 60' South of North
Loganberry entrance.
A B C D
Compactor Pressure, psi 350.00 350.00 350.00 Moisture @ Compaction, % 11.90 12.80 13.70 Density, pcf 117.70 120.30 118.90 A-Value 80.00 75.00 71.00 Exudation Pressure, psi 420.00 270.00 150.00 Stabilometer Thickness, ft. .29 .36 .41 Expansion Pressure ThicknesS, ft. 0.07 0.00 0.00
Traffic Index (Assumed) -- Sand Equivalent R-Value - Exudation Pressure 76 R-Value - Expansion Pressure --
R-Value (At Equilibrium) 76
2—Woodward—Clyde Consultants
Siqned for the Company by:
AMEICAN ENGINEERING LABORATORIES, INC.