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REVIEWED FOR
CO~AP' lANCE
JUL 2 5 2000
COLLEGE STATION
ENGINEERING
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( IN FEET )
1 inch 50 ft.
LEGEND
TH '" THROAT ELEVATION (TOP OF PAVEMENT)
FL "" FLOWlINE
DRAINAGE AREA
CHART
AREA AREA Coeff TIME I 100 Ql00
NO. (ACRES) "c" (MIN.) (lNjHR) (C.t.S)
1 0.76 0.75 10.0 11.0 6.3D
2 0.93 0.75 10.0 11.0 7.70
3 1.03 0.75 10.0 11.0 8.51
4 1.48 0.75 10.0 11.0 12.22
5 0.46 0.75 10.0 11.0 .3.76
6 0.41 0.75 10.0 11.0 3.40
7 1.59 0.75 10.0 11.0 1.3.09
8 1.00 0.75 10.0 11.0 8.28
9 1.12 0.75 1O.D 11.0 9.26
10 0.46 0.75 10,0 11.D 3.77
11 0.86 0.75 10.0 11.0 7.10
12 0.78 0.75 10.0 11.0 6.45
13 0.99 0.75 10.0 11.0 8.15
14 0.67 0.75 10,0 11.0 5.55
15 1.5D 0.75 10.0 11.0 12.36
16 0.68 0.75 10.0 11.0 5.57
17 0.90 0.75 10.0 11.0 7.43
GENERAL NOTES
1. All CONSTRUCTION TO BE IN ACCORDANCE WITH THESE PLANS AND CITY Of COllEGE
STATION STANDARDS AND SPECIFICATIONS.
2. PRIOR TO STARTING CONSTRUCTION, THE CONTRACTOR SHALL MAKE CERTAIN THAT
ALL REQUIRED PERMITS AND APPROVALS HAVE BEEN OBTAINED. NO CONSTRUCTION
OR FABRICATION SHAlL BEGtN UNllL THE CONTRACTOR HAS RECEIVED AND THOROUGHLY
REVIEWED ALL PLANS AND OTHER DDCUt.tENTS APPROVED BY All OF THEPERMlTllNG
AUTHORITIES.
3. BARRICADING, TRAmc CONTROL, AND PROJECT SIGNS SHALL CONFORM TO "STATE
DEPARTMENT OF' HIGHWAYS AND PUBLIC TRANSPORTATION BARRICADING AND
CONSTRUCTION STANDARDS" AND THE OTY OF COlLEGE STATION SPECIFICATIONS.
4. THE GENERAL CONTRACTOR AND All SUB-CONTRACTORS SHAlL VERIFY THE SUITABILITY
OF All EXISTING AND PROPOSED SITE CONDITIONS INCLUDING GRADES AND DIMENSIONS
BEFORE COMMENCEMENT OF CONSTRUCTION. THE ENGINEER SHALL BE NOTIfIED
IMMEDIAlElY OF ANY DISCREPANCIES.
5. THE LOCATION OF UNDERGROUND UTIlITIES SHOWN ON THIS PLAN ARE BASED ON FIELD
SURVEYS AND LOCAl UTILITY COMPANY RECORDS. IT SHALL BE THE CONTRACTOR'S FULl
RESPONSIBILITY TO CONTACT THE VARIOUS UTILITY COMPANIES TO LOCATE THEIR
UTILITIES PRIOR TO STARTING CONSTRUCTION.
6. CONTRACTOR SHALL VERIfY ALL EXISTING INVERTS AND RIM ELEVATIONS PRIOR
TO CONSTRUCTION.
7. ALL PROPOSED CONTOURS ARE APPROXIMATE. PROPOSED SPOT ELEVATIONS AND
DESIGNA TED GRADIENT ARE TO BE USED IN THE EVENT OF ANY DISCREPANCIES
8. FOR AREA DRAIN LOCATIONS AND GRATE ELEVATIONS, SEE LANDSCAPE PLAN.
9. All STORM SEWER PIPE 18" TO 24" SHALL BE CLASS III RCP OR ALUt.fINIZED TYPE II
SPIRAL RIB STEEL PIPE. EMBEDMENT SHALL BE IN ACCORDANCE WITH SD-8
10. All STORM SEWER PIPE LESS THAN IS" SHAlL BE PVC SDR-35, OR APPROVED EQUAL
11. All PVC TO SO CONNECTIONS SHALL BE CONSTRUCTED WITH CONCRETE COllARS.
12. TRENCH EXCAVATION FOR TRENCHES 5 FEET OR MORE IN DEPTH SHAll BE IN
ACCORDANCE CITY OF COlLEGE STATION STANDARD DETAILS AND SPEOfICATlONS.
13. ALL STORM SEWER PIPE WITH RADIUS LESS THAN 100 FEET SHAll USE 4 FOOT
JOINTS WITH BEVELED ENDS,
NOTE:
-BUILDING ROOF DRAINS TO CONNECT TO UNDERGROUND STORM
SEWER SYSTEM.
-STORM SEWER SYSTEM DESIGNED TO CARRY 100-YEAR STORM
SEE DRAINAGE AREA MAP SHEET C-6 FOR DESIGN INFORMATION.
-STORM SEWER SYSTEM DESIGNED TO CARRY 100-YEAR STORM
EVENT.
EVENT.
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