Carter Addn 3-CS120613 T H E G I T Y O F
coma L
June 13, 2012
J. Casey Ross, P.E.
Dowdy, Anderson&Associates, Inc
5225 Village Creek Dr. Suite 200
Plano, TX 75093
RE: Carter Addition Phase III—22 lots
Construction Plan Review Comments
The City of Coppell has reviewed the referenced plans and has the following comments to offer:
General-
1. Revise mountable curb such that there is 27' from gutter to gutter.
Paving Plan-
2. Show sidewalk to be built by developer along Lot lx.
3. BFR's at entrance need to be closer to the intersection, typically within curb return.
4. The City will still require written approval from the gas company for road and utility
crossing.
5. At the intersection of Legacy & Heritage Oak there appears to be a 4.76 A PVI. Quite
large without a vertical curve.
Drainage Plan-
6. Show the water line crossings on the profiles.
7. Add necessary erosion protection to outfalls.
8. With the future driveways along Carter and needing a trapezoidal channel to carry 28.1
CFS, include storm through this section & maintain a visual ditch on the surface for
overflow.
Water Plan-
9. Try using 2-45° bends instead of 90° bends.
10. Headwalls shown on this plan are sloped end.
Sanitary Sewer Plan/Profile-
11. Use City casing detail for bore 3090.
12. Outside drop connections.
Grading Plan-
13. Contours don't match at storm outfalls.
255 PARKWAY * P.O.BOX 9478 * COPPELL TX 75019 * TEL 972/462 0022 * FAX 972/304 3673
14. No drainage going over the walls, revise details.
15. Retaining wall details: background lines are too light, can't see utility lines.
Please make the necessary changes and submit these marked-up plans and two sets of revised
plans to the City for review. There may be additional comments marked throughout the plans
that may need to be addressed as well. If you have any question please contact this office at your
convenience.
Sincerely,
George S Marshall, P.E., CFM
Civil Engineer
Office Phone: (972) 304-3562
Fax: (972) 304-3570
E-mail gmarshall @coppelltx.gov