Town Center L1B1-LR 951028 PARKLAND ENGINEERING & TESTING, INC.
GEOTECHNICAL ENGINEERING CONSULTANTS
3601 KlM DRIVE, SUITE 102
P.O. BOX 154196
IRVING, TEXAS 75015
PETER YU. M.S.. P.E. TEL: (214) 986-1694
PRESIDENT FAX: (214) 790-5378
Job No. 95-173-1
October 28, 1995
Overton Bank & Trust
P.O. Box 948
Coppell, Texas 75019
ATTN: Mr. Mike Shipman, President
Pavement Subgrade Inspection & Testing
Overton Bank & Trust Building
102. N. Denton Tap Road
CopDell, Texas
Dear Sir:
As requested on October 27, 1995 and in the presence of Mr.
E4sel Keel, Superintendent for Innovative Developers, Inc., we
conducted an inspection at the above location. The purpose of
this inspection was to document our field notes and to verify the
engineering properties of the pavement subgrade soils for the
optional lime stabilization scheme as originally specified by the
City of Coppell. The following is to summarize our testing
results and comments:
Two (Z) soil samples were recovered from the existing
pavement subgrade after stripping. According to Mr. Edsel Keel,
the subgrades were very close to the design elevations.
Sample No. i ( at the N.E.corner of the Drive-In-Bank area)-
This subgrade soil was classified as a reddish brown
clayey sand with sandy clay ( SC-eL group ) lumps
having a Plasticity Index of 9 (L.L.=25, P.I.=9) and is
considered as a stable ( inactive ) material.
Sample No. Z ( at the N.E.corner of the main building area)-
This subgrade soil was classified as a greyish brown
sandy clay with little clayey sand (SC-CA group) and
was tested to have a Plasticity Index of 15 ( L.L.=35,
P.I.=15 ) and is considered as an inactive material.
Overton Bank & Trust Bldg., Coppell, Tx.
Page 2 of 2/95-173-1
Based on our field observation and the test results, and
since no additional imported materials will be used, we deem that
the proposed lime stabilization scheme is not effective and
therefor is not recommended for these sections of the pavement
subgrades. However, if highly plastic clay materials are
encountered during the remaining part of the paved area or if
imported, make-up fills are contemplated, we shall be notified to
test and to evaluate the conditions.
We trust this is the information requested. Should you have
further questions, please call. Thank you.
Yours very truly,
PARKLAND ENGINEERING & TESTING, INC.
Peter Yu, M.S., P.E.
Geotechnical Engineer
PY/ta
C.C.:
1- Client
1- City of Coppe11 / Mr. Larry Davis, Construction Inspector
1- Innovative Developers, Inc./ Mr. David Dorris, Project Manager
PARKLAND ENGINEERING & TESTING, INC.