ST0501-CS100823
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George Marshall - RE: ST05-01 Deforest Road
From: George Marshall
To: Kim Brawner
Date:8/23/2010 4:33 PM
Subject:RE: ST05-01 Deforest Road
Attachments: TR0801-SP100527.pdf
Please see attached the recently used pole/ mast arm on Riverchase.
>>> "Kim Brawner" <kbrawner@lee-eng.com> 8/17/2010 3:41 PM >>>
George,
Dan and I have met to review the traffic signal comments. Thank you for the specifications that you
forwarded. We will modify the technical specifications to incorporate the City’s pay items. We do have a
couple of questions that we need clarification on:
1.This traffic signal layout that we originally utilized to establish the sheet layouts was based on a
previously completed project: Sandy Lake Road – Phase 1 (North Coppell and Sandy Lake). We met on
March 26 in your office with our preliminary plans and on April 6 in the field, the modified layout
sheets were not discussed at either meeting.
2.Because the project is at 95% review, making major modifications at this stage is difficult. We have
reviewed the sample plan set and all of the information shown in the sample plan set is shown in our
plans. Actually, our plans sheets show more information than the sample plans set. We can relocate
design tables as shown in the Sandy Lake at Riverchase signal plans. We would like to continue to
utilize the existing legend and symbols since it would require major rework to match them with the
sample plan set.
3.Can you forward a copy of the City of Coppell signal pole detail sheets? We will incorporate the
revised detail sheets.
We have also read your technical specs for mast arm pole assembly (Page 6-6-13) and have a few
questions. The specifications say in accordance with the “American Association of State Highway and
Transportations Officials”, but it does not specify which AASHTO version nor is there a design detail
sheet. The contractor and the pole manufacturer would not know which version of AASHTO
specifications to use. Does the City have an on-call contract with a pole manufacturer?
4.We also wanted to raise awareness of a possible issue. Dan let us know that city has decided to
replace the existing ADA ramps on the west side of the intersection. Dan is going to forward us the
ADA ramp modifications that he has completed. Hopefully, the signal layout can be modified without
the addition of extra poles. Additional poles (and design) may be necessary if we cannot
accommodate the ADA ramps within the existing design. Once we review the changes, we will know
more.
Kimberly Brawner, PE, PTOE
Project Engineer
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Lee Engineering, LLC
3030 LBJ Freeway, Suite 1660
Dallas, TX 75234
Office: 972-248-3006
Cell: 972-310-0185
Fax: 972-248-3855
From: George Marshall [mailto:gmarshall@coppelltx.gov]
Sent: Tuesday, August 03, 2010 4:01 PM
To: Lowell DeGroot; Kim Brawner
Subject: ST05-01 Deforest Road
Dan & Kim,
Please use the attached plans & specifications with regards to the traffic signal on Deforest.
If you have any questions, please call either me or Per.
Thank You, George
George Marshall, PE
City of Coppell
Engineering
972-304-3562
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