ST8402-CS 881123TO:
SUBJECT:
HANDWRITTEN MEMORANDUM
MESSAGE:
FROM: ~VSS /....QO},//--~'' DATE: //--.2~'-~'
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GINN, INC.
CONSULTING ENGINEERS
November 10, 1988
Mr. Russell Doyle, P.E.
City Engineer
City of Coppell
P.O. Box 478
Coppell, Texas 75019
Re: Denton Tap Road Improvements
Creek, Coppell, Texas.
from Sandy Lake Road to Denton
Dear Mr. Doyle:
As a part of the effort to get the Parkway Blvd. improvements
underway, the city of Coppell had agreed to include the western
portion of the Denton Tap Road/Parkway Blvd. intersection in the
construction of the Denton Tap Road Improvements. It is our
intention to revise the plans to include the western part of the
intersection up to the ends of the curb returns as marked in red
pencil on the attached print. As with the median opening
requested by ABQ Development, this work can be included in the
scope of our work covering overall design of the project. If
agreeable to you, we will then issue a field change for the work
to accomplished by the Contractor under the existing unit prices
in the Contract.
If you have any questions, please feel free to call me.
S~.~re~y, /
John C. Karlsruher, P.E.
Project Engineer
Enclosure
cc: H. Wayne Ginn, P.E.
File J-379
A:J379PKWY
17103 Preston Road · Suite 100 · LB 118 · Dallas, Texas 75248 · Phone 214/2484900
"'2700
Jerry Parch Consulting Engineers
October 29, 1988
Mr. John Karlsruher,
Ginn, Inc.
17103 Preston Road
Suite 100, LB 118
Dallas, Texas 75248
214/248-4900
P.E.
RE: JP No. 88009; Denton Tap Road;
Parks of Coppell; Coppell, Texas
Dear John:
Pursuant to your request, enclosed is a drawing showing the
geometrics of the westerly turnout for Parkway Boulevard at the
intersection with Denton Tap Road. Distances are provided based
on location of ABQ property corners following dedication of
additional Right-of-Way, i.e. point numbers 454 and 462, at the
north and south ends of ABQ's frontage on Denton Tap Road.
Design of the turnouts is based on our surveyors location of the
centerline of existing Parkway Boulevard on the east side of
Denton Tap Road and your construction plans for Denton Tap Road
through the intersection. Our surveyors located the nails in the
Right-of-Way that were apparently set sometime ago (prior to
construction) on the roadway centerline for the PC and PT of the
5729.70 ft. centerline radius curve in Denton Tap Road. However,
we adjusted the location of these points generally 0.2 ft. to the
north in order that the radius and delta of the design curve
remain valid with our geometry. Therefore, if the location of
the centerline PC and PT was preserved, they should not be used
for staking the proposed Parkway Boulevard turnout.
I would suggest using ABQ property corners for construction
staking of the proposed Parkway Boulevard t~rnout. Please notify
me if our surveyors can provide any assistance.
I hope that the information presented on the attached drawing is
sufficient for preparation of construction drawings for the
proposed Parkway Boulevard turnout. However, if you need
additional information, please call. Please advise us of the
westerly limits of this turnout once they are determined and
provide us a copy of the completed design when available.
6001 V,/. Interstate 20, Suite 209. LB 32 · Arlington, Texas 76016 · Metro (817) 572-3458 · (817) 561-2108
Mr. John Karlsruher, P.E. October 29, 1988
JP No. 88009 Page 2 of 2
If we can provide further assistance, please call. Thank you.
Sincerel~
~Jerry Parche' , P.E.
JP:ch
Enclosure: Layout Sheet of Proposed Turnout
cc: Mr. Jay Chester, P.E./ABQ Development Corporation Mr. Russell Doyle, P.E./City of Coppell
Mr. Jack Crawford, R.P.S./Brittain and Crawford
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