ST8402-CS 881012 GINN, INC.
October 12, 1988
CONSULTING ENGINEERS
Mr. John H. ~aynes, P.E.
John H. Haynes & Associates, Inc.
2424 Stutz Drive
P.O. Box 35481
Dallas, Texas 75235
Re: Denton Tap Road Improvements, Coppell, Tx.
Dear Mr. Haynes:
I am enclosing a copy of a letter from L. H. Lacy Company which
is requesting that Cement Stabilization be used for subgrade
treatment in lieu of Lime Stabilization as specified in your
geotechnical investigations and our design for the projects. If
Cement Stabilization can be used on this project, there may be a
considerable savings in both construction time and cost to the
City of Coppell. I would like for you to review and evaluate L.
H. Lacy Company's request. In our previous conversations
regarding this subject you mentioned that in order to evaluate a
request such as this, some information indicating the rates of
application, thickness, and acceptance criteria should be
included. In reading the attached letter it is not apparent what
the acceptance criteria should be, but the rates of application
and thickness proposed appear to be the same as that proposed for
the Lime Stabilization. If you need the results of tests, such
as Ph/PI, Proctors and etc. to evaluate this request, please
respond accordingly.
In order to justify his request the Contractor must pay for and
provide us with any test data or design data which will
adequately convince you that what they are proposing will result
in a finished product equal to or better than that originally
specified. Please call me if you have any questions.
S ince~ely, J
Pr~ect Engineer
JCK/j k
enclosures
cc: H. Wayne Ginn, P.E.
David M. Snyder, P.E. - L. H. Lacy Co.
Randy Fleming
17103 Preston Road · Suitc 100 * IAI 118 ·Dallas, Tcxas 75248 · Phone 214/248-4900