Forest Cove 2-LR 980323 (2)March 23, 1998
ALPHA TESTING, INC.
2209 Wisconsin St., Suite 100
Dallas, Texas 75229
972/620-8911 - 972/263-4937 [Metro)
FAX: 972/406-8023
PACIFIC ~ D~W~LOPN~NT CO~.I~RA~ION
C/O Robert Pope & Associates
4011 W. Plano Parkway #104
Plano, Texas 75093
Attention: Mr. Robert Pope
Re: Pavement Subgrade
F~ (~)V~ ESTATES PHI & II
Coppell, Texas
ALPHA Report No. 98018- 28
Submitted herein are results of our analysis of the pavement
subgra4e at the ~ve referenced site. A total of 4 typical
suk~r&~ ,~,.~1 s~es were obtained. Atterberg-limits were
det:e~[n~'f}~r &~;i/'~GUr sa~les and one lime series was performed
on the ~ PlaStic material. Results of the Atterberg-limit
tests and lime series are attached.
Based on visual observation of the exposed paving subgrade, results
of the Atterberg-limit tests, and results of the lime series, a
minimum of 27 lbs per square yard (for 6 inch compacted depth)
hydrated lime (by dry weight) as required by the City of Coppell
would be sufficient to stabilize the sandy clay subgrade along all
the streets and alleys. All mechanical lime stabilization should be
performed in general compliance with the City of Coppell Standards
and Specifications.
We appreciate the opportunity to be of service on this project. If
we can be of further assistance, please call upon us.
Sincerely y3~4! ~/
/~Jim .L. Hillhouse, P.E.
President
cc: (1) Client
(1) City of Coppell
Geotechnical Engineering · Construction Materia~ Testing · Consulting
MECIIANICAL LIME STABILIZATION
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PEIICENT llYDltATED LIME
NO.
SAMPLE:
DESCRIPTION: DARK BROWN CLAY (CL)
LOC~kTION: ALLEY "D-i" AT STATION 6+00
PACIFIC UNITED DEV. CORP. /,~ LINE SERIES DATA
PLANO, TEXAS////% ( FIGURE 1 )
'FOREST COVE ESTATES PHI & II
COPPELL, TEXAS 98018-28 03/23/98
RESD-LTS OF ATT~~-LIMIT TESTS
1
2
3
4
ir.]rGOl'D LTNTT
4O
50
39
34
PLARTICITY X~DNE
24
34
24
2O
LOCATION AND
2
3
4
CRESTWOOD COV~ AT STATION 4+00
(sRow ,s ¥ CLAY(eL))
ALLEY SD-l" AT STATION 6+00
(DARK BROWN CLAY(CL))
FOREST RIDGE DRIVE AT STATION 4+50
(BROWN SANDY CLAY(eL))
FOREST RIDGE DRIVE AT STATION 10+00
(BROWN SANDY CLAY(CL))
PACIFIC UNITED DEV. CORP.
PLANO, TEXAS
FOREST COVE ESTATES PHI
COPPELL, TEXAS
ATTERBERG-LIMIT RESULTS
(FIGURE 2)
98018-28
03/23/98