Stonemeade-CS 930122Maxim Engineers, Inc.
Engineering and Environmental Consultants ~ I II II
2342 Fabens, P.O. Box 59902
Dallas, Texas 75229
,.-' ~ ~ ~~ ~ r.,~e~o (2 ~ 4) 263
// . ~ ___ ~ Fox C214) 484-5804
Ja~ua~ 2~, 1993 ~ /
Mr. Derek Earle, P.E. ~ /JAN 5
Centex Real Estate Corporation ~
North Area Division ~, ~-~ .. L-_
1660 S. Stemmons Freeway, Suite 150 ~ ?";:
Lewisville, Texas 75067 ' ~ ..............
RE: Lime Series Test Results
c~ ~ exas
Dear Mr. Earle:
In accordance with your request, a representative of Maxim Engineers, Inc. obtained five (5)
samples of the exposed soil materials at the paving subgrade elevation at the above referenced
project on January 7, 1993.
The purpose of obtaining these samples was to determine the amount of lime required to
stabilize the subgrade soils prior to pavement construction. The samples were transported to
the laboratory and classification tests were performed. The test results are as follows:
Sample No. 1
Sample Location Crooked Court, Station I + O0
Liquid Limit 52
Plastic Limit 22
30
Plasticity Index
Sample No. 2
Sample Location Stonemeade Way, Station 0 + 50
Liquid Limit 26
Plastic Limit 13
Plasticity Index 13
Dallas · Fort Worth · Houston · Austin · San Antonio · Phoemx · Los Angeles
Centex Real Estate Corporation, North Area Division
January22, 1993
Sample No. 3
Sample Location Flintshire Way, Station 3 + 00
Liquid Limit 18
Plastic Limit 14
Plasticity Index 4
Sample No. 4
Sample Location Garden Grove, Station 2 + 00
Liquid Limit 34
Plastic Limit 16
Plasticity Index 18
Sample No.
Sample Location
Liquid Limit
Plastic Limit 13
Plasticity Index 6
5
Flintshire Way, Station 1 + O0
19
The results of a lime series test performed on the subgrade soil, Sample No. I is as follows:
Percent of Lime Plasticity Index with Lime
(by dry weight) (%)
0 30
3 15
5 11
7 10
Maxim Engineers, Inc. Stonemeade/Lime Series Test Results
Page 2
Centex Real Estate Corporation, North Area Division
January 22, 1993
Based on the above test results, it is recommended that five (5) percent lime by dry weight be
used to stabilize the subgrade soils within the paving areas of the above referenced project.
The lime stabilization should be performed in accordance with the Texas State Department of
Highways and Public Transportation Specifications and the applicable city codes.
The five (5) percent is approximately equivalent to 23 pounds per square yard for six (6) inch
thick subgrade or 30 pounds per square yard for eight (8) inch thick subgrade.
It should be noted that the test results indicated the area of paving along Flintshire Way does
not require lime to reduce the plasticity. If the area is not limed, the testing laboratory should
visually identify the limits of the soil where lime should be placed.
We umst the information submitted herein is sufficiently detailed for your use. Please contact
us if we may be of further assistance.
Sincerely,
Patrick Sanders, A.E.T.
Manager
Construction Materials Testing Dallas/Fort Worth
PS:RWG/sks
Mr. Larry Davis - City of Coppell
Richard W. Gee, P.E.
Vice President
Maxim Engineer$, Inc. StonemeadedLime Series Test Results
Page 3