Stonemeade-CS 930127The City With A Beautiful Future
P.O. Box 478
Coppell, Texas 75019
214-462-0022
January 27, 1993
Mr. Derek Earle, P.E.
Centex Real Estate Corporation
North Area Division
1660 S. Stemmons Freeway, Suite 150
Lewisville, TX 75067
RE: Stonemeade Estates
Dear Derek:
I have received and reviewed the report from Maxim Engineering, Inc. concerning the lime
series test results for Stonemeade Estates. Based on those test results, Maxim is recommending
that 5 % lime by dry weight be used to stabilize the subgrade soils. They also state that in some
areas of the subdivision, lime is not required to reduce the plasticity of the soil. To insure that
there is no misunderstanding on this project when the contractor is ready to stabilize the soil,
please be advised that the City of Coppell will be requiring the following stabilization on this
project.
The lime should be installed at a minimum of 6% lime by dry weight. The additional
percentage is requested to compensate for any spillage or overmixing of the soil during
the processing. Obviously, under ideal lab conditions, exactly 5% can be added to the
soil to lower the plasticity of the soil. Under actual field conditions, it is much more
difficult to add exactly 5 % to the soil.
In areas where lime is not required to lower the plasticity, the City will be requiring that
a minimum 6% cement be added to stabilize the subgrade.
If you should have any questions concerning this issue, please feel free to contact me at your
convenience.
Sincerely,
Kedneth M. Griffm, P.E.
City Engineer
ex:: Garreth Campbell, Construction Inspector
Larry Davis, Construction Inspector
KMG/pm
dearle.kmg