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TEX,GON
TRANSMITTAL
October 21, 2005
Carol Cotter
Development Services
City of College Station
Joe Schultz, P .E. ~
Texcon General C~ractors
1707 Graham Road
College Station, Texas 77845
Phone: (979) 764-7743
Driveway Culvert Design Summary
Williams Creek Subdivision -Phase 3
College Station, Texas
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Attached is a summary of the driveway culvert design for Williams Creek
Phase 3. The culverts were designed to pass the 10-year storm event runoff
with headwater equal to or less than the diameter of the pipe.
Please contact me if you have any questions.
Williams Creek Subdivision -Phase 3
Driveway Cu lvert Summary
Block# Lot# Street #of Pipe size Slope Tc Contributing Area Contributing
Barrels (in) (%) (min) No. Area (ac)
1 18 Johnson Creek Loop 1 12 0.60 10.0 402 0.28 ----f------------
19 Johnson Creek Loop 1 12 0.60 10.0 402 0.28 --20 Johnson Creek Loop 1 12 1.32 10.0 403 0.23
21 Johnson Creek Loop 1 12 0.60 10.0 403,406 0.43 --22 Johnson Creek Loop 1 12 2.20 10.0 408,409 0.40 --------23 Johnson Creek Loop 1 12 4.45 10.0 409 0.29 ------24 Johnson Creek Loop 1 12 2.28 10.0 409 0.29 ------25 Johnson Creek Loop 1 12 1.00 10.0 413 0.24 -----26 Johnson Creek Loop 1 12 0.60 10.0 413 0.24
27 Johnson Creek Loop 1 12 0.60 10.0 413 0.24 --
28 Johnson Creek Loop 1 18 4.34 10.0 415,418,419,422,423 1.37 -------------29 Johnson Creek Loop 1 18 7.00 10.0 418,419,422,423 1.15 -----------
30 Johnson Creek Loop 1 12 5.48 10.0 419,422,423 0.39 ---------31 Johnson Creek Loop 1 12 2.23 10.0 423 0.23
32 Johnson Creek Loop 1 12 0.60 10.0 423 0.23
3 8 Johnson Creek Loop 1 24 1.63 22.3 401,401A(75%) 4.07 ----9 Johnson Creek Loop 1 18 0.60 21.4 401 1.80 -10 Johnson Creek Loop 1 15 1.32 34.8 404 1.76 ---11 Johnson Creek Loop 1 15 1.32 34.8 404 1.76
12 Johnson Creek Loop 1 24 0.60 35.8 404,405 2.99 --13 Johnson Creek Loop 1 18 2.20 16.4 410 1.35 ----e----14 Johnson Creek Loop 1 18 2.28 16.4 410 1.35 ---
15 Johnson Creek Loop 1 24 5.48 30.0 417,420,421,424 3.14 ---~ --16 Johnson Creek Loop 1 18 5.48 29.1 420,421,424 2.11 --17 Johnson Creek Loop 1 15 2.23 28.7 421,424 1.41 ----
18 Johnson Creek Loop 1 15 0.80 28.0 424 1.15 -19 Johnson Creek Loop 1 15 0.60 28.0 424 1.15
Notes:
1. All driveway pipes shall be RCP, T&G, Class 3.
2. All S.E.T.s shall be pre-cast and in accordance with TxDOT Standard Sheet PSET-RC,
PRECAST SAFETY EN D TREATMENT, TY II -CROSS DRAI NAGE.
-
0 10
(cfs)
1.21
1.21 --0.99 --1.86 --1.73
1.25
1.25 -1.04 ---1.04
1.04
5.91 -4.96
1.68
0.99 --0.99
11.91
5.39
3.97
3.97 --
6.63 --
4.65
4.65
7.75
5.30
3.57 -2.96
2.96
3. Refer to Exhibit B from the Drainage Report for Williams Creek Subdivision , Phase 3, dated October, 200 5.