Woodlands-LR 950810 (2)ALPHA TESTING, INC.
2209 Wisconsin St., Suite 100
Do#os, Texos 75229
2'14/620891'1 ~
FAX: 2141406-8023
August 10, 1995
W. 0. C. INVESTMENTS
C/O FINLEY DEVELOPMENT
16801 Addison Road #250
Addison, Texas 75248
Attention: Mr. Bob Finley
Re: Pavement Subgrade
WOODLANDS OF COPPILL
Coppell, Texas
ALPHA Report No. 95230-26
Submitted herein are the results of our analysis of the pavement
subgrade for the above referenced site. The subgrade was sampled
and a total of two (2) samples were obtained. Two Atterberg-Limit
tests, one Minus 200 test, and a cement series were performed on
the samples. Results of the Atterberg-Limits, Minus 200 tests and
cement series are attached.
Recommendations are based on results of the cement series and
laboratory tests referenced above. In order to reduce the
plasticity index of subgrade material along proposed streets to
twelve (12) or less, it is recommended the subgrade along all
streets be stabilized with 2.5 percent portland cement (by dry
weight) (13.0 lbs per square yard for 6 inch compacted depth).
All stabilization should be performed in general compliance with
City of Coppell Standards and Specifications.
We appreciate the opportunity to be of service on this project.
If we can be of further assistance, pleas call upon us.
Sincerely yours,
' R~ug~b Hernand~ J~f.'
T~chnical Superviscfr/ E.I .T.
1 lhouse ,-- . P.E.
cc: (1) Client (1) City of Coppell
(1) HAP Engineers and Assoc.
Geotechnical Englneerlng · Conslructlon Materials Testing · Consulting
MECHANICAL LIME STABILIZATION
3O
25
P
L
A
s 20
T
!
C
1
Y
[
N
D 10
1 2
PERCENT HYDRATED LIME
3 4
SAMPLE:
DESCRIPTION:
LOCATION:
W.O.C. INVESTMENTS, INC
C/O FINLEY DEVELOPMENT
WOODLANDS OF COPPELL
COPPELL, TEXAS
NO. 2'
TAN CLAYEY SAND (SC)
DARTMOUTH LANE, STATION 4+00
CEMENT SERIES DATA (FIGURE 1)
95230-26A 08/04/95
RESULTS OF ATTERBERG-LIMIT
AND MINUS 200 TESTS
SAMPLE
LIQUID LIMIT
PLASTICITY INDEX
1 24 10
2 34 19
PERCENT PASSING
200 SIEVE
27
LOCATION AND DESCRIPTION:
DARTMOUTH LANE, STATION 2+00
BROWN CLAYEY SAND (SC) WITH GRAVEL
DARTMOUTH LANE, STATION 4+00
TAN CLAYEY SAND (SC)
~.O.C. INVESTMENTS, INC.
7/0 FINLEY DEVELOPMENT
~OODLANDS OF COPPELL
EOPPELL, TEXAS
RESULTS OF LABORATORY
TESTS (FIGURE 2)
95230-26B 08/04/95