Gateway BP(2.1)-CS 981208Halff A ate
S S O C 1 S
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ENGINEERS · ARCHITECTS · SCIENTISTS
PLANNERS · SURVEYORS ~ ~'-.59-'-) :~ .~ ' 2 '4 '~ ~ '~
AVO 17419
Mr. Kenneth Griffin
c/o Michael Martin
City 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
Gateway Office Center in Gateway Business Park No. II. For the parking area, the
alternative design is 5 inch thick 4000 PS[ compressive strength concrete with #3 bars, 24
inch O.C.E.W. o,n cOmpacted subgrade inlien nf the. 5 inch thick 3000 PSI conlPressive
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
b.~s, 24 inch O.C.E.W. on compacted subgrade in lien of the 6 inch thick 3000 PSI
compressive strength concrete wlth #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 Jackson
cc: Robert McCann, Catellus
Mike Hellinghausen, Omniplan
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