121 BP Phase 1-CS 990209 Halff As ate
Ill S O C S {214) 346-6200
III .^x739-009
ENGINEERS · ARCHITECTS · SCIENTISTS
PLANNERS · SURVEYORS
FebruaD' 9. 1999
AVO 17585
Mr. Kenneth Griffin
c/o Michael Martin
Citv of Coppell
255 Parkway Boulevard
P.O. Box 478
Coppell, Texas 75019-4409
Dear Mr. Griffin.
Halff Associates, Inc. would like to submit an alternative pavement design for Lot
2, Block 1 of the One Twenty One Business Park. For the parking area, the alternative
design is 5 inch thick 4000 PSI compressive strength concrete with #3 bars. 24 inch
O.C.E.W. on compacted subgrade in lieu of the 5 inch thick 3000 PSI compressive
strength concrete with #3 bars, 24 inch O.C.E.W. on 6 inch lime stabilized subgrade as
shox~m in Appendix C of the City of Coppell Subdivision Ordinance. For the fire lane.
the alternative design is 6 inch thick 4000 PSI compressive strength concrete with #3
bars, 24 inch O.C.E.W. on compacted subgrade in lieu of the 6 inch thick 3000 PSI
compressive strength concrete with #3 bars, 24 inch O.C.E.W. on 6 inch lime stabilized
subgrade shown in Appendix C of the City of Coppell Subdivision Ordinance.
If you have any questions or require any additional information, please contact Pat
Acker or myself.
Sincerely.
HALFF ASSOCIATES, INC.
Matthew M. Dorsett, EIT
Graduate Engineer
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