NOTE: 1. USE SILT FENCE ONLY WHEN DRAINAGE AREA DOES NOT EXCEED 1/4 ACRE AND NEVER IN AREAS OF CONCENTRATED FLOW. 2. UV RESISTANT SILT FENCE FABRIC MUST BE USED NO ORANGE SILT FENCE PERMITTED.NO ORANGE SILT FENCE PERMITTED. ORANGE SILT FENCE PERMITTED.
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* FOR REPAIR OF SILT FENCE FAILURES, USE No. 57 WASHED STONE. SILT FENCE SHOULD NOT BE USED AS INLET PROTECTION AROUND CATCH BASINS.
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4" WIDE x 8" TRENCH OVER SKIRT *
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STANDARD TEMPORARY SILT FENCE
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7/24/09
HS402
TREE PROTECTION AREA
DO NOT ENTER
TREE PROTECTION AREA
DO NOT ENTER
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TOWN OF HOLLY SPRINGS ENGINEERING DEPARTMENT
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%%UFRONT VIEW
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MIN. 10 GA.
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LINE WIRES
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VARIABLE AS DIRECTED BY THE ENGINEER
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SILT FENCE FABRIC
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INSTALLED TO SECOND
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WIRE FROM TOP
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6' MAX.
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MIN. 12-1/2 GA.
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INTERMEDIATE
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WIRES
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GRADE
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40"
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18"
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4"
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3"
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4"
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3"
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4"
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%%UWARNING SIGN DETAIL
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STANDARD DETAIL NUMBER:
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REVISIONS
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DATE
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DRAWING NOT TO SCALE
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NOTES: 1. NO ORANGE SILT FENCE PERMITTED. NO ORANGE SILT FENCE PERMITTED. ORANGE SILT FENCE PERMITTED. 2. USE SILT FENCE ONLY WHEN DRAINAGE AREA DOES NOT EXCEED 1/4 ACRE AND NEVER IN AREAS OF CONCENTRATED FLOW. 3. ORANGE, UV RESISTANT, HIGH-TENSIL STRENGTH, POLLY BARRICADE FABRIC MUST BE USED. 5. END OF SILT FENCE NEEDS TO BE TURNED UPHILL 6. WARNING SIGNS TO BE MADE OF DURABLE, WEATHERPROOF MATERIAL. 7. LETTERS TO BE 3" HIGH MINIMUM, CLEARLY LEGIBLE AND SPACED AS DETAILED. 8. SIGNS SHALL BE PLACED AT 50' MAXIMUM INTERVALS. 9. PLACE A SIGN AT EACH END OF LINEAR TREE PROTECTION AND 50' ON CENTER THEREAFTER. 10. FOR TREE PROTECTION AREAS LESS THAN 200' IN PERIMETER, PROVIDE NO LESS THAN ONE SIGN PER PROTECTION AREA. 11. ATTACH SIGNS SECURELY TO FENCE POSTS AND FABRIC. 12. MAINTAIN TREE PROTECTION FENCE THROUGHOUT DURATION OF PROJECT. 13. ADDITIONAL SIGNS MAY BE REQUIRED BY TOWN OF HOLLY SPRINGS ENGINEERING DEPARTMENT BASED ON ACTUAL FIELD CONDITIONS. 14. PLACE A SIGN AT EACH END OF LINEAR TREE PROTECTION AND 50' ON CENTER THEREAFTER.
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4" WIDE x 8" DEEP TRENCH
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OVER SKIRT *
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ANCHOR SKIRT AS
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DIRECTED BY ENGINEER *
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%%USIDE VIEW
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2'-0"
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FILL SLOPE
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WOVEN WIRE FABRIC
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SILT FENCE FABRIC
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3'-0"
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32" MIN. WIDTH
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26"
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GRADE
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STEEL POST
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* FOR REPAIR OF SILT FENCE FAILURES, USE No. 57 WASHED STONE.
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POLY BARRICADE FABRIC (TYPICAL)
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HIGH - TENSIL STRENGTH,
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ORANGE, UV RESISTANT,
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STANDARD TEMPORARY SILT/ TREE PROTECTION FENCE
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9/22/16
HS403
TREE PROTECTION AREA
DO NOT ENTER
TREE PROTECTION AREA
DO NOT ENTER
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TOWN OF HOLLY SPRINGS ENGINEERING DEPARTMENT
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%%UFRONT VIEW
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MIN. 10 GA.
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LINE WIRES
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VARIABLE AS DIRECTED BY THE ENGINEER
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ORANGE, UV RESISTANT,
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HIGH - TENSIL STRENGTH,
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POLY BARRICADE FABRIC (TYPICAL)
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8' MAX.
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MIN. 12-1/2 GA.
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INTERMEDIATE
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WIRES
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GRADE
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40"
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18"
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4"
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3"
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4"
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3"
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4"
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%%UWARNING SIGN DETAIL
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%%USIDE VIEW
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2'-0"
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WOVEN WIRE FABRIC
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BARRICADE FABRIC
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3'-0"
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32" MIN. WIDTH
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26"
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GRADE
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STEEL POST
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DRAWING NOT TO SCALE
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STANDARD DETAIL NUMBER:
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DATE
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REVISIONS
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NOTES: 1. NO ORANGE SILT FENCE PERMITTED. NO ORANGE SILT FENCE PERMITTED. ORANGE SILT FENCE PERMITTED. 2. ORANGE, UV RESISTANT, HIGH-TENSIL STRENGTH, POLY BARRICADE FABRIC MUST BE USED. 3. WARNING SIGNS TO BE MADE OF DURABLE, WEATHERPROOF MATERIAL. 4. LETTERS TO BE 3" HIGH MINIMUM, CLEARLY LEGIBLE AND SPACED AS DETAILED. 5. SIGNS SHALL BE PLACED AT 50' MAXIMUM INTERVALS. 6. PLACE A SIGN AT EACH END OF LINEAR TREE PROTECTION AND 50' ON CENTER THEREAFTER. 7. FOR TREE PROTECTION AREAS LESS THAN 200' IN PERIMETER, PROVIDE NO LESS THAN ONE SIGN PER PROTECTION AREA. 8. ATTACH SIGNS SECURELY TO FENCE POSTS AND FABRIC. 9. MAINTAIN TREE PROTECTION FENCE THROUGHOUT DURATION OF PROJECT. 10. ADDITIONAL SIGNS MAY BE REQUIRED BY CITY OF RALEIGH INSPECTIONS DEPARTMENT BASED ON ACTUAL FIELD CONDITIONS. 11. PLACE A SIGN AT EACH END OF LINEAR TREE PROTECTION AND 50' ON CENTER THEREAFTER.
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STANDARD TREE PROTECTION DETAIL
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7/24/09
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HS404
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TOWN OF HOLLY SPRINGS ENGINEERING DEPARTMENT
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SILT FENCE OUTLET
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3' FILTER FABRIC ON GROUND
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STEEL FENCE POST
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WIRE FENCE
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HARDWARE CLOTH
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FILTER OF 1" DIAMETER WASHED STONE
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BURY 6" OF UPPER EDGE OF FILTER FABRIC IN TRENCH
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BURY WIRE FENCE AND HARDWARE CLOTH
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TOP OF SILT FENCE MUST BE AT LEAST 1' ABOVE THE TOP OF THE WASHED STONE
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SILT FENCE
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FRONT VIEW
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SECTION VIEW
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STEEL FENCE POST SET MAX 2' APART MIN. 18" INTO SOLID GROUND
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BURY WIRE FENCE, FILTER FABRIC, AND HARDWARE CLOTH IN TRENCH
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REVISIONS
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DATE
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DRAWING NOT TO SCALE
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STANDARD DETAIL NUMBER:
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4' MIN.
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18" MINIMUM HEIGHT OF STONE
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4/6/17
HS405
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TOWN OF HOLLY SPRINGS ENGINEERING DEPARTMENT
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GRAVEL & RIP RAP BASIN/ OUTLET
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STABILIZE THE EMBANKMENT AND ALL DISTURBED AREAS ABOVE THE SEDIMENT POOL AND DOWNSTREAM FROM THE TRAP IMMEDIATELY AFTER
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OF 1.5 FT BELOW THE LOW POINT OF THE EMBANKMENT. IMMEDIATELY FILL ANY SETTLEMENT OF THE EMBANKMENT TO SLIGHTLY ABOVE DESIGN
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CHECK THE STRUCTURE FOR DAMAGE FROM EROSION OR PIPING. PERIODICALLY CHECK THE DEPTH OF THE SPILLWAY TO ENSURE IT IS A MINIMUM
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GRADE. ANY RIP RAP DISPLACED FROM THE SPILLWAY MUST BE REPLACED IMMEDIATELY.
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A DESIGNATED DISPOSAL AREA AND REPLACE THE CONTAMINATED PART OF THE GRAVEL FACING.
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DIMENSIONS WHEN THE SEDIMENT HAS ACCUMULATED TO ONE-HALF THE DESIGN DEPTH OF THE TRAP. PLACE THE SEDIMENT THAT IS REMOVED IN
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INSPECT TEMPORARY SEDIMENT TRAPS AFTER EACH PERIOD OF SIGNIFICANT RAINFALL. REMOVE SEDIMENT AND RESTORE TRAP TO ITS ORIGINAL
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FABRIC
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3600 CU FT/ACRE
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CONSTRUCTION WITH SEEDING.
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MAX FILL
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5 FT
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FILTER
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SETTLED
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DESIGN
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TOP
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1.5 FT
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MIN
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21"
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FOR SETTLEMENT
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OVERFILL 6"
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5 FT
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%%UCROSS SECTION
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MAX
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1:1 SIDE SLOPE
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%%U*MAINTENANCE
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MIN
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3 FT
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*4 FT MIN
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2:1
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SLOPE MAX
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GROUND
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NATURAL
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2:1 SIDE
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FABRIC
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FILTER
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2:1
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MAX
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1.5 FT
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5 FT
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MIN
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1' FREEBOARD
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MIN
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1.5 FT
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STANDARD DETAIL NUMBER:
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DRAWING NOT TO SCALE
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DATE
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REVISIONS
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12" MIN. OF NCDOT #5 OR #57 WASHED STONE
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EMERGENCY BYPASS 6" BELOW SETTLED TOP OF DAM
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NOTES: 1. USE FOR DRAINAGE AREAS NOT EXCEEDING 5 (FIVE) ACRES. 2. EARTH BERM SHALL BE STABILIZED w/ SEEDING ACCORDING TO TOWN SPECIFICATIONS. 3. USE CLEAN COMPACTOR FILL MATERIAL FOR EARTH BERM. 4. USE POROUS BAFFELS.
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7/24/09
HS406
DRAWING NOT TO SCALE
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TOWN OF HOLLY SPRINGS ENGINEERING DEPARTMENT
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CUSTOM BASIN
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FLOW
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EARTH BERM
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PIT
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SEDIMENT
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TOP ELEVATION OF STORMWATER
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FLOW
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%%UPERSPECTIVE VIEW
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3' SEDIMENT STORAGE ZONE
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1.5' MAX. SEDIMENT DEPTH
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1' FLOOD STORAGE ZONE
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TOP OF BERM
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5' MIN
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%%USECTION THRU BASIN & FILTER
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NOTE 1. DRAW DOWN RISER SHALL BE 8" SCH. 40 PVC WITH CLEAN-OUT CAP AND SLOTS. SLOTS SHALL BE PLACED 1/8" WIDE, 1" ON CENTER RADIAL AROUND PIPE. VERTICAL SAW CUTS 24" LONG. 2. THE TARP USED TO PROTECT THE WEIR SHALL BE THE WIDTH SPECIFIED. THE LENGTH OF THE TARP SHALL BE ACCORDING TO AVAILABLE SUPPLY. IF MULTIPLE TARPS ARE TO BE USED, THEN TARPS SHALL BE LAPPED AT LEAST12". THE UPSTREAM 12" TARP SHALL OVERLAP THE DOWNSTREAM TARP. THE TARP SHALL BE 50 MIL. HEAVY DUTY SILVER TARPAULINS FOR U.V. RESISTANCE.
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#5 WASHED STONE FILTER TO TOP OF SLOTS
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SEE NOTE 1
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CAP TOP OF PIPE 8" PVC OR 8" PPC RISER WITH SLOTS
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1'-8" FREEBOARD MIN.
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3:1 MAX.
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3:1 MAX.
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TARP
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EMBED 18"
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4" PVC (NO SLOTS)
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TARP EXTENDS TO TOE OF BACK SLOPE
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POROUS BAFFLE (TYP.)
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25%-50%
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25%
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TARP
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3'
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1'-6"
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6" PVC w/SLOT
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1' - 8"
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TOP OF DAM
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DITCH AND BURY TARP
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EDGE (MIN. 12")
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WEIR LENGTH
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12"
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TARP PROTECTION
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REVISIONS
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DATE
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STANDARD DETAIL NUMBER:
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8/30/19
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HS407
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TOWN OF HOLLY SPRINGS ENGINEERING DEPARTMENT
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GRAVEL & RIP RAP FILTER BERM BASIN
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CLASS 1 RIP RAP(SEE SECTION THRU BASIN BELOW)
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%%UPERSPECTIVE VIEW
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%%USECTION THRU BASIN, FILTER AND CULVERT PIPE
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(EXISTING PIPE INVERTS)
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NO SCALE
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SEDIMENT STORAGE
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CLASS 1 RIP-RAP
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#5 OR #57 WASHED STONE
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MAX. SEDIMENT DEPTH(CLEAN OUT POINT)
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FLOOD STORAGE ZONE
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AREAS TO BE DISTURBED
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FLOW
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(CUT, FILL, ETC.)
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1.5'
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1.5'
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1'
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1'
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FLOW
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FLOW
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SEDIMENT
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PIPE INVERT
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RIP RAP HEADWALL
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FLOW
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2.5'
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2'
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NATURAL
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GROUND
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#5 OR #57 WASHED STONE. 1' THICK X 2.5' HIGH MIN.
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NO SCALE
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AREA
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STORAGE
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FLOW
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PIPE
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INVERT
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CLASS 1 RIP RAP HEADWALL
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FLOW
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STANDARD DETAIL NUMBER:
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DRAWING NOT TO SCALE
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DATE
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REVISIONS
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NOTES: 1. GRAVEL & RIP RAP FILTER BERM BASIN DETAIL IS DESIGNED TO PROTECT EXISTING PIPE INVERTS THAT DRAIN 5 ACRES OR LESS. 2. DIMENSIONS ARE MINIMUM ACCEPTABLE UNLESS OTHERWISE NOTED.
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8/19/09
HS408
DRAWING NOT TO SCALE
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TOWN OF HOLLY SPRINGS ENGINEERING DEPARTMENT
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CATCH BASIN RISER/FILTER
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(TOTAL BASIN CAPACITY)
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SEDIMENT STORAGE ZONE
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PIPE
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CULVERT
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%%USECTION VIEW
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CLEAN OUT POINT (1/2 DEPTH SEDIMENT STORAGE ZONE)
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No. 57 WASHED STONE FILTER LAID AGAINST HARDWARE CLOTH (1 : 1 MAX. SLOPE)
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GALVANIZED HARDWARE CLOTH 1/2" X 1/2" GRID
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GALVANIZED HARDWARE
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(SEE STD. HS )
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SILT FENCE BAFFLES (TYP.)
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FUTURE STORM
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DRAIN PIPE
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FLOW
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1.5'
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1.5'
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1.0'
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FLOOD STORAGE ZONE
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FLOW
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%%UPERSPECTIVE VIEW
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FLOW
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CLOTH W/ 1/2" GRID
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1
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1
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CONCRETE FOOTING PAD
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FLOW
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CONCRETE BLOCK CATCH BASIN
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No. 57 WASHED STONE FILTER
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SEDIMENT
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STORAGE
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ZONE
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PIPE
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CULVERT
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FLOW
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OVER
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STANDARD DETAIL NUMBER:
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DATE
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REVISIONS
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NOTE: 1. AT END OF PROJECT, CATCH BASIN CAN BE RAISED AS NEEDED PLUGGING OPEN COURSE OF BLOCK WITH MORTAR. 2. RISER CAN BE BUILT AS A STANDARD CATCH BASIN/JUNCTION BOX (WITH WEEP HOLES) IN RECEIVING WALL AND BE UTILIZED AS SUCH WHEN PROJECT IS STABLE. 3. IF DRAINAGE AREA IS OVER 5 ACRES THEN THIS STRUCTURE NEEDS TO BE TREATED AS A RISER STRUCTURE AND ALL RELATED INFORMATION NEEDS TO BE SUPPLIED. (TRASH RACK, ELEVATIONS, ETC..)
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7/24/09
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TOWN OF HOLLY SPRINGS ENGINEERING DEPARTMENT
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STANDARD SKIMMER FILTER BASIN (PLAN VIEW)
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REVISIONS
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DATE
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DRAWING NOT TO SCALE
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STANDARD DETAIL NUMBER: HS409HS409
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FLOW
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COIR FABRIC SUPPORTED WITH TOP WIRE BETWEEN STEEL POSTS
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5'
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NOTES: 1. DRIVE STEEL FENCE POST AT LEAST 2' INTO SOLID GROUND. 2. WOOD POSTS ARE NOT ACCEPTABLE. 3. USE STAPLES 1' APART TO ATTACH FABRIC. 4. 4' MAX BETWEEN POSTS. 5. CLEAN OUT WHEN 1/2 FULL. 6. 700-900 GRAMS PER SQ. METER COIR FABRIC. 7. STONE PAD INSTALLED AT LOCATION SKIMMER SETTLES (3'X3'X1'D). 8. BAFFLES SHALL BE INSTALLED PERPENDICULAR TO FLOW. 9. THE BAFFLE MATERIAL NEEDS TO BE SECURED AT THE BOTTOM AND SIDES USING STAPLES.
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SKIMMER (SEE TOHS DETAIL)
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BAFFLE INSTALLATION - STEP 1
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PERSPECTIVE VIEW
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POROUS BAFFLE INSTALLATION - STEP 2
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EARTH BERM
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STEEL POST
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SEDIMENT PIT
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COIR FABRIC
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UV RESISTANT TARP
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4/20/20
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STONE PAD
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BOTTOM ANCHORED WITH STAPLES
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If the temporary sediment basin will be converted to a permanent stormwater basin of greater depth, the baffle height should be based on the pool depth during use as a temporary sediment basin.
HS410
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TOWN OF HOLLY SPRINGS ENGINEERING DEPARTMENT
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REVISIONS
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DATE
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DRAWING NOT TO SCALE
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DRAWING NOT TO SCALE
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STANDARD DETAIL NUMBER: HS411HS411
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STANDARD SKIMMER DETAIL
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VENT
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SCREEN ACCESSIBLE THROUGH DOOR
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FLOAT
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BARREL PIPE LONGER THAN SHOWN. NOT INCLUDED WITH SKIMMER SUPPLIED BY USER.
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FLEXIBLE JOINT (RADIATOR HOSE)
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OUTLET END: CONNECTION TO OUTLET PIPE OR RISER
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NOTE: SKIMMER IS TO BE A SURFACE DEWATERING DEVICE SUCH AS BMP SKIMMER OR APPROVED DEVICE.
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7/24/09
HS413
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TOWN OF HOLLY SPRINGS ENGINEERING DEPARTMENT
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CHECK DAM
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EXISTING SLOPE
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TOP ELEVATION OF STORMWATER
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VARIES
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%%UFRONT VIEW
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6"-1'
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VARIES
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EXISTING SLOPES
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KEYED RIP RAP
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#57 WASHED STONE
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%%USIDE VIEW
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12" #57 WASHED
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STONE
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1 MAX.
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CLASS B RIP-RAP
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VARIES
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1
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0.5'-1'
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EXISTING SLOPE
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%%USTEP SEQUENCE
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WEIR
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FILTER FABRIC
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STANDARD DETAIL NUMBER:
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DRAWING NOT TO SCALE
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DATE
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REVISIONS
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NOTES: 1. HEIGHT & WIDTH DETERMINED BY EXISTING TOPOGRAPHY AND SEDIMENT STORAGE REQUIRED. 2. KEY RIP RAP INTO THE DAM FOR STABILIZATION. 3. TOP OF DOWNHILL CHECK DAM IS TO BE SAME ELEVATION OF BOTTOM OF UPHILL CHECK DAM.
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1.5'
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VARIES (2' MAX AT CENTER)
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9/21/16
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(SEE NOTE 3)
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SAME ELEVATION
HS415
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TOWN OF HOLLY SPRINGS ENGINEERING DEPARTMENT
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RESIDENTIAL CONSTRUCTION ENTRANCE
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THIS ENTRANCE APPLIES ONLY TO ENTRANCES
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OF INDIVIDUAL SINGLE FAMILY RESIDENTIAL UNITS.
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%%UNOTE:
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EXISTING ROADWAY
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%%UPLAN
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CLEAN STONE (NO. 57)
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ROADWAY
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EXISTING
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%%UCROSS SECTION
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6" MIN.
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AND GUTTER
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KNOCK OUT CURB
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NEW CONSTRUCTION
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CONSTRUCTION ENTRANCE
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WHICH WOULD ADD TOTAL LIFE TO THE
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-FABRIC MAY BE ADDED UNDER THE STONE
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METHOD OF REMOVING EXISTING CURB
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-REFER TO DWG. STD. HS STANDARD
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DRIVEWAY APRON
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-REFER TO DWG. STD. HS7 STANDARD
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12'
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20' MIN.
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CLEAN STONE (NO. 57)
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STANDARD DETAIL NUMBER:
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DRAWING NOT TO SCALE
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DATE
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REVISIONS
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7/24/09
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TOWN OF HOLLY SPRINGS ENGINEERING DEPARTMENT
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REVISIONS
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DATE
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DRAWING NOT TO SCALE
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DRAWING NOT TO SCALE
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STANDARD DETAIL NUMBER: HS416HS416
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EXISTING PUBLIC ROAD OR OTHER OFF-SITE PAVEMENT
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%%USECTION 'A-A'
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WASH RACK
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(CONTINGENT UPON WATER
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KEEP A BROOM AND SHOVEL CLOSE
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TO THE RACK TO CLEAN THE STREET.
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12' MINIMUM
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A
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A
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20' MINIMUM
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IT IS ADVISABLE TO PROVIDE A SEPARATE
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ENTRANCE TO LIMIT TRAFFIC ACROSS THE RACK
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AND REDUCE WEAR AND MAINTENANCE.
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ONE SECTION OF REINFORCED CONCRETE CATTLEGUARD
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3" WASHED STONE UNDER AND BETWEEN SLATS TO
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DRAIN WATER AND SEDIMENT AWAY FROM THE RACK.
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GEOTEXTILE FABRIC
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FOUNDATION OF 8" COMPACTED
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CRUSH AND RUN STONE
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THE LOCATION MUST SLOPE AWAY FROM THE STREET
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OR STEPS MUST BE TAKEN (GRADING, DIVERSIONS, ETC.)
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TO PREVENT RUNOFF FLOWING INTO THE STREET.
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MAIN INSTALLATION)
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**THE FOLLOWING IS AN EXAMPLE OF AN ACCEPTABLE WASH
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RACK. OTHER APPROVED METHODS MAY BE UTILIZED.
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PRESSURIZED WATER SOURCE
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PROVIDE DRAINAGE AWAY FROM THE WASH RACK TO A SEDIMENT-TRAPPING DEVICE.
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STANDARD CONSTRUCTION EXIT WASH RACK
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7/24/09
HS417
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TOWN OF HOLLY SPRINGS ENGINEERING DEPARTMENT
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DIVERSION DITCH
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SIDE SLOPES
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2 : 1 (MAX.)
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STEEP CUT OR FILL SLOPE
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STEEP CUT OR FILL SLOPE
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POSITIVE GRADE 1.0% MAX.
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%%UPLAN VIEW
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%%UCROSS SECTION
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UPSLOPE TOE
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2:1 SLOPE (MAX)
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2' MIN
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18"
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AND EROSION CONTROL
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WITH TEMPORARY SEEDING
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- STABILIZE DIVERSION DITCH
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NETTING
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2' MIN.
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2' MIN
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COMPACTED
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STANDARD DETAIL NUMBER:
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REVISIONS
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DATE
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DRAWING NOT TO SCALE
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7/24/09
HS418
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TOWN OF HOLLY SPRINGS ENGINEERING DEPARTMENT
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TEMPORARY STREAM CROSSING
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25'
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MINIMUM
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TOP OF BANK
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OR 12" WHICHEVER IS
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1/2 DIAMETER OF PIPE
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GREATER
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TOGETHER = BANK FULL FLOW
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CAPACITY OF PIPE CULVERTS
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FILTER FABRIC
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COARSE AGGREGATE
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%%uELEVATION
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6" DEEP
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COARSE AGGREGATE (#57)
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%%uPLAN
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STREAM CHANNEL
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TOP OF BANK
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MINIMUM
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25'
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FLOW
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STANDARD DETAIL NUMBER:
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DRAWING NOT TO SCALE
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DATE
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REVISIONS
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EARTH FILL COVERED BY CLASS B RIPRAP OR SURGE STONE
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EARTH FILL COVERED BY CLASS B RIPRAP OR SURGE STONE
DITCH SHALL BE RECONSTRUCTED WHEN DAMAGED BY EQUIPMENT OR COVERED BY FILL.
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AND ALONG STREAMS TO INTERCEPT FLOW AND/OR DIVERT TO A CONTROLLED OUTLET.
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TEMPORARY SILT DITCH TO BE USED WHERE TOE OF FILL SLOPES EXCEEDS 3 FEET IN VERTICAL HEIGHT
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%%uCROSS SECTIONAL VIEW
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WASTE MATERIAL-COMPACT, SEED & MULCH AFTER CONSTRUCTION OF DITCH
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2:1 MAX.
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SILT SHALL BE REMOVED WHEN SILT DITCH IS ONE-HALF FULL.
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%%uNOTES:
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3.
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2.
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1.
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FILL SLOPE
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2:1 MAX.
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REVISIONS
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DATE
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DRAWING NOT TO SCALE
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STANDARD DETAIL NUMBER:
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7/24/09
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HS425
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TOWN OF HOLLY SPRINGS ENGINEERING DEPARTMENT
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TEMPORARY SLOPE DRAIN
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4' min level section
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Stabilize Outlet
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Plastic Corrugated Pipe
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10' Spacing
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Inlet
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3:1
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4' min.
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Dike
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Hold-down stakes
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1.5' min
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Plan View Standard T-section
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Cross-Section View
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NOTES: 1. ENTRANCE-CONSTRUCT THE ENTRANCE TO THE SLOPE DRAIN OF A STANDARD FLARED-END SECTION OF PIPE WITH A MINIMUM 6-INCH METAL TOE PLATE (CROSS-SECTION VIEW). MAKE ALL FITTINGS WATERTIGHT. A STANDARD T-SECTION FITTING MAY ALSO BE USED AT TH INLET. 2. TEMPORARY DIVERSION-GENERALLY, USE AN EARTHEN DIVERSION WITH A DIKE RIDGE TO DIRECT SURFACE RUNOFF INTO THE TEMPORARY SLOPE DRAIN. MAKE THE HEIGHT OF THE RIDGE OVER THE DRAIN CONDUIT A MINIMUM OF 1.5 FT AND AT LEAST 6 INCHES HIGHER THAN THE ADJOINING RIDGE ON EITHER SIDE. THE LOWEST POINT OF THE DIVERSION RIDGE SHOULD BE A MINIMUM OF 1 FT ABOVE THE TOP OF THE DRAIN SO THAT DESIGN FLOW CAN FREELY ENTER THE PIPE. 3. OUTLET PROTECTION-PROTECT THE OUTLET OF THE SLOPE DRAIN FROM EROSION.
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REVISIONS
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DATE
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DRAWING NOT TO SCALE
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STANDARD DETAIL NUMBER:
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7/24/09
HS426
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TOWN OF HOLLY SPRINGS ENGINEERING DEPARTMENT
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RIP RAP LINED CHANNELS
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FILTER FABRIC OR
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FILTER FABRIC OR
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%%UV-SHAPED WATERWAY WITH STONE CENTER DRAIN%%U
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%%UPARABOLIC-SHAPED WATERWAY WITH STONE CENTER DRAIN%%U
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GRAVEL BEDDING
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GRAVEL BEDDING
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2/3 W
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6"
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18"
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6"
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18"
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(SHAPED BY MOTOR GRADER)
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d
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W
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(SHAPED BY BULLDOZER)
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d
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W
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TYPICAL RIP RAP CHANNEL
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4" to 12"
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4" to 12"
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GRAVEL BEDDING
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%%UTRAPEZOIDAL
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FILTER FABRIC OR
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d
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W
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STONE CLASSIFICATION
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RIP RAP DEPTH
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A
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9"
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B
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18"
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CLASS 1
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24"
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CLASS 2
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24" - 36"
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%%UTABLE
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STANDARD DETAIL NUMBER:
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DRAWING NOT TO SCALE
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DATE
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REVISIONS
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NOTES: 1. TO BE USED WHERE EXCESSIVE STORMWATER VELOCITIES PROHIBIT VEGETATIVE LININGS. 2. SIZE OF STONE MUST BE DETERMINED BY APPROPRIATE DESIGN PROCEDURE. 3. DIMENSIONS FOR d & W VARIES ACCORDING TO DESIGN. 4. RIP RAP DEPTH AS PER DESIGN OR REFER TO TABLE.
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7/24/09
HS427
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TOWN OF HOLLY SPRINGS ENGINEERING DEPARTMENT
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STANDARD DETAIL NUMBER:
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REVISIONS
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DATE
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NOTES: : 1. L = THE LENGTH OF THE RIPRAP APRON. 2. d = 1.5 TIMES THE MAXIMUM STONE DIAMETER BUT NOT LESS THAN 6" (inches). 3. A FILTER BLANKET OR FILTER FABRIC SHOULD BE INSTALLED BETWEEN THE RIPRAP AND SOIL FOUNDATION.
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A
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A
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I.D.
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3 TIMES I.D.
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PLAN VIEW
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SECTION 'A-A'
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FILTER FABRIC
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d
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L
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PIPE
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PIPE
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PIPE OUTLET TO FLAT AREA NO WELL-DEFINED CHANNEL
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7/24/09
HS428
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TOWN OF HOLLY SPRINGS ENGINEERING DEPARTMENT
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PIPE OUTLET TO WELL-DEFINED CHANNEL
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STANDARD DETAIL NUMBER:
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REVISIONS
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DATE
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PLAN VIEW
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d
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SECTION 'A-A'
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PIPE
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NOTES: : 1. L = THE LENGTH OF THE RIPRAP APRON. 2. d = 1.5 TIMES THE MAXIMUM STONE DIAMETER BUT NOT LESS THAN 6" (inches). 3. IN A WELL-DEFINED CHANNEL EXTEND THE APRON UP THE CHANNEL BANKS TO AN ELEVATION OF 6" (inches) ABOVE THE MAXIMUM TAILWATER DEPTH OR TO THE TOP OF THE BANK, WHICHEVER IS LESS. 4. A FILTER BLANKET OR FILTER FABRIC SHOULD BE INSTALLED BETWEEN THE RIPRAP AND SOIL FOUNDATION.
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FILTER FABRIC
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A
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PIPE
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A
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L
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7/24/09
HS429
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TOWN OF HOLLY SPRINGS ENGINEERING DEPARTMENT
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SEEDING EROSION CONTROL SCHEDULE - TABLE 4.1
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TABLE 4.1
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SEEDING EROSION CONTROL SCHEDULE
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(MAXIMUM SLOPE 3:1)
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NOVEMBER 1 - MARCH 1
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AUGUST 15 - NOVEMBER 1
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DATE
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MARCH 1 - APRIL 15
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MARCH 1 - JULY 15
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APRIL 15 - JUNE 30
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JULY 15 - AUGUST 15
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BROWNTOP MILLET OR SORGHUM-SUDAN HYBRID
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OR ST. AUGUSTINE GRASS
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TALL FESCUE AND ABRUZZI RYE OR ANNUAL RYE
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OR HYBRID BERMUDA GRASS
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TALL FESCUE OR HARD FESCUE
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TYPE
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OR CENTIPEDE GRASS
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OR ZOYSIA GRASS
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TALL FESCUE, %%UAND%%U
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200 LBS/ACRE
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300 LBS/ACRE
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25 LBS/ACRE
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35 LBS/ACRE
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300 LBS/ACRE
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300 LBS/ACRE
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PLANTING RATE
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REVISIONS
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DATE
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STANDARD DETAIL NUMBER:
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*
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TALL FESCUE OR HARD FESCUE
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WEEPING LOVE GRASS
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HULLED COMMON BERMUDA GRASS
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OR BAHIA GRASS
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**
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Seeding dates will vary depending on weather conditions (e.g. temperature, rainfall, etc.)
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**
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Temporary - Reseed according to optimum season for desired vegetation. Do not allow temporary cover to grow over 12 inches in height before mowing to keep fescue from being shaded out.
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*
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Note on maintenance: refertilize if growth is not fully adequate. Reseed, refertilize and mulch immediately following erosion or other damage.
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9/21/16
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RIPARIAN AREAS TO BE RESEEDED WITH NATIVE GRASS MIX/ VEGETATION
HS430
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TOWN OF HOLLY SPRINGS ENGINEERING DEPARTMENT
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SEEDING EROSION CONTROL SCHEDULE - TABLE 4.2
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TABLE 4.2
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SEEDING EROSION CONTROL SCHEDULE
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SLOPES (3:1 AND 2:1 - NOT MOWED)
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MARCH 1 - APRIL 15
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MARCH 1 - JUNE 1
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DATE
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MARCH 1 - JUNE 30
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MARCH 1 - JUNE 30
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JUNE 1 - SEPTEMBER 1
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SEPTEMBER 1 - MARCH 1
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SERICEA LESPEDEZA (SCARIFIED),
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SERICEA LESPEDEZA (UNHULLED-UNSCARIFIED),
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TALL FESCUE, %%UAND
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%%UADD%%U HULLED COMMON BERMUDAGRASS
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%%UADD%%U WEEPING LOVEGRASS,
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%%UADD%%U TALL FESCUE,
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TYPE
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%%UADD%%U BROWNTOP MILLET,
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%%UOR%%U %%UADD%%U SORGHUM-SUDAN HYBRIDS
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AND %%UADD%%U TALL FESCUE,
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AND %%UADD%%U ABRUZZI RYE AND ANNUAL RYE
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%%UAND
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%%UOR
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%%UOR
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30 LBS/ACRE
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70 LBS/ACRE
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25 LBS/ACRE
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50 LBS/ACRE
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120 LBS/ACRE
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25 LBS/ACRE
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120 LBS/ACRE
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25 LBS/ACRE
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10 LBS/ACRE
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120 LBS/ACRE
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PLANTING RATE
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REVISIONS
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DATE
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DRAWING NOT TO SCALE
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STANDARD DETAIL NUMBER:
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*
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*
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*
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For temporary seeding purposes.
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Note on maintenance: refertilize if growth is not fully adequate. Reseed, refertilize and mulch immediately following erosion or other damage.
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9/21/16
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RIPARIAN AREAS TO BE RESEEDED WITH NATIVE SEED MIX.
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TOWN OF HOLLY SPRINGS ENGINEERING DEPARTMENT
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CONSTRUCTION ENTRANCE
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DRAWING NOT TO SCALE
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DATE
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REVISIONS
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STANDARD DETAIL NUMBER:
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HS432
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MIN.
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50' MIN.
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REQUIRED
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6" MIN.
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PUBLIC ROAD
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12'
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NOTES: A. TURNING RADIUS SUFFICIENT TO ACCOMMODATE LARGER TRUCKS IS TO BE PROVIDED. TURNING RADIUS SUFFICIENT TO ACCOMMODATE LARGER TRUCKS IS TO BE PROVIDED. B. ENTRANCE(S) SHOULD BE LOCATED TO PROVIDE FOR MAXIMUM UTILIZATION BY ALL CONSTRUCTION TRUCKS. ENTRANCE(S) SHOULD BE LOCATED TO PROVIDE FOR MAXIMUM UTILIZATION BY ALL CONSTRUCTION TRUCKS. C. MUST BE MAINTAINED IN A CONDITION WHICH WILL PREVENT TRACKING OR DIRECT FLOW OF TRAFFIC ONTO STREETS. MUST BE MAINTAINED IN A CONDITION WHICH WILL PREVENT TRACKING OR DIRECT FLOW OF TRAFFIC ONTO STREETS. PERIODIC TOP DRESSING WITH STONE WILL BE NECESSARY, KEEP SOME ON HAND. D. ANY MATERIAL WHICH STILL MAKES IT ONTO THE ROAD MUST BE CLEANED IMMEDIATELY.ANY MATERIAL WHICH STILL MAKES IT ONTO THE ROAD MUST BE CLEANED IMMEDIATELY.
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APPLICABLE AT ALL POINTS OF INGRESS & EGRESS UNTIL SITE IS STABILIZED. FREQUENT CHECKS OF THE DEVICE AND TIMELY MAINTENANCE MUST BE PROVIDED.
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OR 2" TO 3" STONE
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AS
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GEOTEXTILE FABRIC TO STABILIZE FOUNDATION (ESPECIALLY IMPORTANT WHERE WETNESS IS ANTICIPATED)
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GEOTEXTILE FABRIC
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GRADE >2%
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8"
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15'
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DIVERSION RIDGE
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PUBLIC ROAD
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8/30/19
HS434
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TOWN OF HOLLY SPRINGS ENGINEERING DEPARTMENT
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EXCAVATED DROP INLET PROTECTION
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STANDARD DETAIL NUMBER:
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DRAWING NOT TO SCALE
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DATE
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REVISIONS
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7/24/09
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FLOW
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FLOW
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FLOW
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FLOW
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WEEP HOLES FOR DEWATERING
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EXCAVATED DEPTH MIN 1' - MAX 2' BELOW TOP OF INLET
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GRAVEL - SUPPORTED BY HARDWARE CLOTH TO ALLOW DRAINAGE AND RESTRICT SEDIMENT MOVEMENT
NOTE: 1. DECORATIVE SCM EDUCATIONAL SIGNAGE WILL BE REVIEWED ON A CASE BY CASE BASIS. 2. MATERIAL TO BE ALUMINUM, LETTERS TO BE BLACK ON A WHITE BACKGROUND. 3. SIGN SIZE AND MATERIAL MAY BE MODIFIED FOR THE SPECIFIC NEEDS OF THE SCM, BUT SHOULD BE NO SMALLER THAN 18" X 18" AND NO LARGER THAN 36" X 36".
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MOUNTING: 1. SIGN SHOULD NOT BE OVER 8 FT TALL AT HIGHEST POINT. 2. SIGN SHOULD BE MOUNTED TO A U-CHANNEL POST (ADD SPECS) OR AFFIXED TO FENCE.
