Northlake 635(8)-CS000117January 17.2000
18018
.
Mr. Kent M. Collins. ?.E.
City o f Coppell - Engineering Department
255 Parkway Boulevard
P.O. Box 478
Coppell, Texas 75019-4409
RE: McCollisteffs Transportation Systems Proposed Building and Parking Expansion
Dear Mr. Collins:
Halff Associates. Inc. would like to submit an alternative pavement design for McCollister's
Transportation Systems building and parking expansion. For the fire lane, the alternative design
is 7 inch thick 3000 PS[ 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 subgradc as shown in Appendix C of the City of
Coppell Subdivision Ordinance. For the trailer storage:parking lot, the alternative design is 6
inch thick 3000 PSI compressive strength concrete with #3 bars, 24 inch O.C.E.W. on compacted
subgradc 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 shown in Appendix C of thc City of Coppcll
Subdivision Ordinance.
If y.-'ou have an3' questions or require an3' additional information, please contact Pat Acker
or myself.
Sincerely,
HALFF ASSOCIATES, INC.
Shane Anderson, Eli
cc: Ray Garrison (WSI Architects)
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