Town Center L1B1-CS 951101NOV-- i --95 W E ]~ ? : 55 PARKLANI) ENO; I NEER I
PA~ND ENGINEERING & TESTING, INC.
GEOTECHNICAL ENGINEERING CONSULTANTS
3601 KlM DRIVE, SUITE 102
P.O. BOX 154196
IRVING, TEXAS 7~15
~ob No.
NovembS~ Oi,
Overran Bank & Trust
P.o. BOX 948
CopDe11, Texas 7~01~
ATTN: ~. Mike S~pman, President
RB: Pavemen~ Sub~.r_a_d~ O~ns~.~i.0~ ~ri~eria
Overton Bank a ~mt Building
hO_2. ~. Dento~
~o~poll. Texas
Dear Sir:
This letter is to follow up our phone conversations on
october 31, 1995 with Mr. AtUl Pate1, Engineer for city of
Coppell and Nar. David Dorris, Project Manager for Innovative
Developers~ InD. wherein the above referenced ~atter was
discussed. Mr. Pats1 asked if the cement treated base should be
used for the pavement subgrade instead of the lime stabilization
scheme WhiCh had been ruled out based on our previous test
results ( see Letter of October 28, 1995 ). The following is to
further evaluate our analysis and comments with Mr. Patel and Mr.
I)orri~:
1. Sines ~he pavemen~ subgrade soils are tested to be or low
to medium Plasticity Indices ( P.Z. of 9 to 15 or less
) and are relative inactive, we deem that there is not
a necessity to use =he cement treated base. This
scheme is just optional only if the owner wants to
Lnorease the service life of the pavement.
2. For the City Approach, Fire Lane and the Drive-In Bank
paved areas, according ~o Mr. David Dorris, a 6.0
NOV-- I --95 W E I~ ? : 54 P A R K L A N I~ E HG I HE ER I HG P . 0 ~
overton Bank & Trust Bldg., coppe11, T~.
[,age 2 of 2/ 95-173-1
'inohes thick, 3,000 PSI concrete would be used while
over the general parking area, a 5.0 inches thick
pavement would be adopted ( using the same concrete
strength ) as called £or by the project Civil Engineer.
3. We mentioned to Nr. Patel that the construction methods
and specifications for the ~it~ &~proae~ would be
complied ~ith according to the City's Building Codes
/ Speci£ications. Nhethe: there ~ill be a need to
increase the pavement thickness e: the concrete
strength for the City's Right-Of-Way / ~pp~o~eh ( as an
alternative for the delet4on
2r%a~_e_d b_&se if....the,~ltv
such a reguir~ment with reaa~d to a 1~ P~,~ s~b~ade
~ ) will be determined by the City of Coppell and
IDI, the General Contractors will be notified
accordingly. For the Bank's serviced pavement areas (
private property sections ), we feel that the owner
ought to have =heir own choice of options because they
have a limited budget and will probably ( after the
construction w~r=ant_v Derip~ ) assume the maintenance
over the service l~ffe of the pavement.
We trust th~s is the information requested. Thank you.
Yours very truly,
PA~tKL~ND ENGINEERING & TESTING,
Peter YU, H.$., P.E.
Geotec~nical Engineer
P¥/ta
Client
cit~ of ~ppe11 / Mr. Larry Davis, Construction Inspector
[nnovative Developers, Inc./ Mr. Dav~ Dorr~s, Project. Manager
PARKLAND ~NGIN~EitlNG & TESTING, INC.