HomeMy WebLinkAbout217.30DIKE MATERIAL COMPACTED
90% MODIFIED PROCTOR
CORRUGATED METAL, CPEP
OR EQUIVALENT PIPE
PROVIDE RIPRAP PAD
OR EQUIVALENT ENERGY
DISSIPATION
DISCHARGE TO A STABILIZED
WATERCOURSE, SEDIMENT RETENTION
FACILITY OR STABILIZED OUTLET
INTERCEPTOR DIKE
STANDARD FLARED
END SECTION
INLET AND ALL SECTIONS MUST BE
SECURELY FASTENED TOGETHER
WITH GASKETED WATERTIGHT FITTINGS
NOTES
1. CONDITION OF USE
1.1. SHOULD BE USED TO CARRY CONCENTRATED RUNOFF DOWN STEEP SLOPES WITHOUT CAUSING EROSION, OR SATURATION OF
SLIDE -PRONE SOILS.
1.1. WHEN A TEMPORARY OR PERMANENT STORMWATER CONVEYANCE IS NEEDED TO MOVE WATER DOWN A STEEP SLOPE TO AVOID
EROSION.
1.1. MAY BE USED TO DIVERT WATER AWAY FROM OR OVER BARE SOIL TO PREVENT GULLIES, CHANNEL, AND SATURATION OF SLIDE
PRONE SOILS.
2. DESIGN AND INSTALLATION SPECIFICATIONS
2.1. THE MAXIMUM DRAINAGE AREA ALLOWED FOR ANY SIZED PIPE IS 10 ACRES. FOR LARGER AREAS MORE THAN ONE PIPE SHALL BE
USED OR A ROCK -LINES CHANNEL HALL BE INSTALLED.
2.2. THE SOIL AROUND AND UNDER THE PIPE AND ENTRANCE SECTION SHALL BE THOROUGHLY COMPACTED.
2.3. THE FLARED INLET SECTION SHALL BE SECURELY CONNECTED TO THE SLOPE DRAIN AND BE FUSED OR WELDED, OR HAVE
FLANGE -BOLTED MECHANICAL JOINTS TO ENSURE WATERTIGHT SEAL.
2.4. SLOPE DRAINS SHALL BE CONTINUOUSLY FUSED, WELDED OR FLANGE -BOLTED MECHANICAL JOINT PIPE SYSTEM WITH PROPER
ANCHOR TO THE SOIL.
2.5. WHERE THE SLOPE DRAIN CROSS STEEP SLOPE HAZARD AREA OR THEIR ASSOCIATED BUFFERS, THE INSTALLATION SHALL BE IN THE
GROUND SURFACE. ANY AREA DISTURBED DURING INSTALLATION AND MAINTENANCE MUST BE IMMEDIATELY STABILIZED.
3. MAINTENANCE STANDARDS
3.1. THE INLET SHALL NOT BE UNDERCUT OR BYPASSED BY WATER. IF THERE ARE PROBLEMS, THE HEAD WALL SHALL BE
APPROPRIATELY REINFORCED.
3.2. NO EROSION SHALL OCCUR ON THE OUTLET POINT. IF EROSION OCCURS ADDITIONAL PROTECTION SHALL BE ADDED.
Y � STD. PLAN - 217.30
y + PUBLIC WORKS PIPE SLOPE DRAIN
F,NO$ DEPARTMENT
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MARCH 2008