Sherrill L2B-CS030326I'^C - lJl:
ENGINEERING 3 DEVELOPMENT COMPANY, INC.
March 26, 2003
PI No. 1093 -02 -019
Ms. Teresa Turner, E.I.T.
CITY OF COPPELL
255 Parkway Blvd.
2 Floor
Coppell, Texas 75019
Re: Angier Professional Building
Belt Line Road
Coppell, Texas
Dear Ms. Turner:
Pursuant to a request from the contractor on the aforementioned site to modify the pavement
specifications pertaining to the sub grade, we offer the following comments. The original design
called for the sub grade to be lime stabilized. Per further review and comments from the
Geotechnical Engineer of Record (Parkland Engineering & Testing, Inc. — Mr. Peter Yu, M.S., P.E.)
we are recommending an option to revise our previous details and specification to eliminate the
requirement of the lime stabilization.
The new requirements shall be as follows. The lime can be eliminated by the increase of the
pavement thickness to ALL areas of pavement (fire lane, drive aisle and parking) to a minimum
thickness of seven inches (7 ") with a minimum strength of 3,000 PSI at 28 days. The original sub
grade preparation methods /guidelines shall be in compliance with the original Geotechnical Report
dated January 22, 2003. The reinforcement shall be as originally specified on the plans.
If you have any questions regarding the above items, or need any additional information, please call
me at your convenience. We appreciate this opportunity to work with you.
Sincerely,
Randall P. Pogue, P.E.
RPP /mdl
1093 / Coppell 03 -26 -03 _�/ _ 1 40 \ 0, 04;P
cc: Mr. Fred Sutton — REAL ESTATE SERVICES 0�
Mr. Fred Donaldson — TRI -STAR CONSTRUCTION