Villas at LV-CS0506273u! 18 05 10:55a DO~DEY.R~DERSOH&RSSOC- IHC (972]931-6787
ALPHA TESTING, INC.
2209 Wisconsin St., Suite 100
Dafla$, Texas 75229
972/620-8911 - 972/263-4')37 (Metro)
FAX' 972/40~-8023
June 27, 2005
WPC 2004 Coppell, L. P.
5225 Village Creek Drive, Suite 200
Plano. Texas 75093
Attention: Mr. Rodney Louviere
Re:
Pavement Subgrade
Villas at Lake Vista Phase One
Coppell, Texas
ALPHA Report No. 05152-2
Submitted herein are results of our analysis of the pavement subgrade at the above referenced
site. The exposed pavement subgrade was szanpled and nine (9) typical subgrade samples were
obtained. Atterberg-limit tests were performed on five (5) of the samples and a lime series was
performed on the most plastic material. Results of the Atterberg-limit tests and the lime series
are attached to this report.
Based on visual observation of the exposed pavement subgrade, results of the Atterberg-limit
tests, and the minimum depth requirements in the project plans, it is recommended that the
subgrade along all streets and fire lane be stabilized with a minimum of 6 percent (27 lbs per
square yard for 6 inch thick compacted depth) hydrated lime (by dry soil weight). The rate of
application is based on a dry unit weight of 100 pcf ~,by ASTM-D698) typical for calculations in
the absence of proctor results.
All mechanical stabilization should be pertbrmed in general compliance with lhe City of Coppell
Standards and Specifications.
We appreciate the opportunity to be of service on this project and if we can be of further
assistance, please call upon us
Sincerely yours,
' C
ALPHA TES'I lNG, IN
Charles Williams
Project M~
Ke~ Combs
M~mger of Materials Testing
(ieotechtu'c~d E git ee:i~tg · ('cm.vIructton Matt'ria~ J~,3[it~i * b~/n,~ronmetttal Engineering · Consultin,g
Jul
MECHANICAL LIME STABILIZATION
45
4o
35
30
10
0
0% 1% 2%
3% 4% 5% 6%
PERCENT HYDRATED LIME
7% 8% 9% 10%
SAMPLE NO,:
DESCRIPTION:
LOCATION:
6
DARK. BROWN SANDY CLAY (CL)
ALLEY B-1 STATION 0+25
CLIENT:
WPC 2004 COPPELL, LP
P,~,N O. TEXAS
LABORATORY TEST:
LIME SER~ES DATA
FIGURE - 1
PROJECT NAME: ALPHA PROJECT NO.: DATE:
VILLAS AT LAKE VISTA PHASE ONE 05152-2 06/27/05
COPPELL, TEXAS
Gcolechnica[ Engfitcerittg · (7onstru~'tm~ MateriaA' Testing · En~,'irotutl¢lff4I! Engineering · Cottsu/littg
5ul ~8 05 ~0:55a DOWOEY.AMDE~SOM&RSSOC. IHC 1972)93~-6787
RESULTS OF LABORATORY TESTS
SAMPLE NO. LIQUID LIMIT PLASTICITY INDEX
1 33 19
4 41 25
5 44 27
6 46 28
8 29 15
LOCATION AND DESCRIPTION:
LAKE VISTA PLACE STATION 1 +85
(BROWN SANDY CLAY (CL))
WORWICK LANE STATION 6+66
(BROWN & TAN CLAY (CL))
THORNBURY WAY STATION 0+81
(DARK BROWN SANDY CLAY (CL))
ALLEY B-1 STATION 0+25
(DARK BROWN SANDY CLAY (CL))
ALLEY C STATION 0+25
( BROWN TAN SANDY CLAY (CL) WITH TRACE OF GRAVEL)
, ALPHA PROJE CT NO.: I
LABORATORY TEST:
ATTERBERG LIMIT TEST
FIGURE - 2
DATE:
06/27/05
PROJECT NAME:
V;LLAS AT LAKE VIISTA PHASE ONE
CC~PELL, TEXAS
Geotech~ffcal Et~gineering · Cottxtruction Materialx Texting * Environmental Engineering · Consulting