Nash Manor-CS020325 Consulting Engi,~ers
12000 Ford Road, Suite 180 972/488-3880
Dallas, Texas 75234 Fax 972/485-3882
March 25, 2002
Mr. Gary W. Johnson, P.E.
Assistant City Engineer
City of Coppell
255 Parkway
Coppell, Texas 75019
Re~
Nash Manor
Construction Plan Review Comments
Dear Gary:
The following statements are in response to your plan review comments dated March 19, 2002:
General Comments
1. Sheets 7, 10, and 11 have been revised accordingly and are the only sheets being resubmitted for
approval.
2. We have included the plats for both Nash Manor and Stringfellow Addition (as faxed to us by
the City of Coppell).
Sheet 7
1. Sheet number has been revised from 7 to 6. Revisions have been noted.
2. Access to the existing homes is to be coordinated between the developer and the homeowners.
The plan is to provide temporary parking on Lot 9, which has direct access to Sandy Lake.
3. Inlets are shown and labeled accordingly.
4. Profiles have been added at the East/West and Centerline of the R.O.W.
5. A vertical curve has been added at Stations 2+40 to 3+40. A vertical curve at the tie-in point
near Sandy Lake Drive has not been added. The existing pavement extends approximately 12'
past the existing inlet. The design of a vertical curve (min. 100' length for k=30) at this point
would require the proposed grade of the street be increased from the current design of-3.37% to
-3.80%, thereby increasing the depth of the road as it approaches the existing connection point.
The grade of the connection of the existing driveway at lot 9 would then increase from
approximately 5% to 12%, which, in my professional opinion, is too steep.
6. The existing driveways have been shown in profile and drain towards the street.
Sheet 10
1. Sheet number has been revised from 10 to 9, the construction entrance has been revised, and the
Silt fencing has been revised. Revisions have been noted.
Sheet 11
1. Sheet number has been revised from 11 to 10. Revisions have been noted.
2. Contours have been added per request.
Enclosed are the mark-ups for sheets 7, 10 and l 1, and two copies of the revisions to each for your
approval. If you have any further question please call.
Sincerely,
Mark Donohue, P.E.
G:\PROJECTS~IRHOLDINGS/D004/LETI'ERS/CITYREVIEW4
Enclosures