Northlake 635(5)-CS 990811Ill· , Halff Associates
ENGINEERS · ARCHITECTS · SCIENTISTS
PLANNERS · SURVEYORS
8616 NORTHWEST PLAZA DRIVE
DALLAS, TEXAS 75225
(214) 346-6200
FAX (214) 739-0095
August 11, 1999
AVO 17695
Mr. Kenneth Griffin, P.E.
c/o Michael Martin, P.E.
City of Coppell
255 Parkway Boulevard
P.O. Box 478
Coppell, Texas 75019-4409
Dear Mr. Griffin,
Halff Associates, Inc. would llke to submit an alternative pavement design for
Coppell Commerce Center, Northlake 635 Business Park, Block D, Lot 1. For the
parking area, the alternative design is 5 inch thick 4000 PSI compressive strength
concrete with #3 bars, 18 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 shown 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, 18 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.
Todd Abbott, E.I.T.
CC:
Jim Gaspard
Richard Nordyke
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