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CCP 08-20-2001
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CCP 08-20-2001
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<br /> <br />Removable cap, <br />plug or screen <br /> <br />ErTtlankment <br /> <br />SIot1ed inlet <br />See detail. <br /> <br />Orifice plate <br />See detail. <br /> <br />Elbow <br />See note 5, <br /> <br />Principal spillway pipe wijh sloned riser <br /> <br />i B t Slotted inlet <br /> ~! 4" D. Rows of 1" x 4" <br /> vertical slots <br /> 4" centered, <br /> m E. Degrees around <br /> 4' the circumfer- <br /> ence. See <br /> notes 1 & 2. <br /> <br />A <br />+t OrifICe plate <br />(R\ <br />~ Minimum thickness: <br />,10" for metal or fibergiass <br /> <br />,25" for plastic or PVC <br /> <br />Standard DimensionsTable <br /> <br />A <br />in. <br /> <br />B <br />in. <br /> <br />C D <br />in. rows <br />min. <br /> <br />E Slot area <br />(jegr, ft"/ft, <br /> <br />1.50-3,50 <br />3,75-5,50 <br />5.75-6,00 <br /> <br />6 <br />8 <br />10 <br /> <br />4 4 <br />6 6 <br />8 8 <br /> <br />90 <br />60 <br />45 <br /> <br />Notes and Comments <br /> <br />1, Slotted inlets shall be fabricated from corrugated <br />metal, smooth steel or PVC plastic pipe. Materials <br />shall have at least the minimum wall thickness given in <br />the standard dimensions table. <br /> <br />2. Slols shall be cut cleanly and deburred, Ends of <br />slots may b9 round or square. <br /> <br />3. Orifice plats, cap and aJlfittings shall be snug and <br />securely fastened. Orifice plate shall be Cleanly cut <br />and free of burrs w~h care taken not to round the <br />edges. It should be a minimum of 2.0 feet below <br />grade for proper functioning. <br /> <br />4. The portion of the inlet ~ow grade may be perfo- <br />rated with a gravel filter for additional dewatering ot <br />basin. <br /> <br />Minimum wall thickness <br />corrugated smooth steel PVC <br />metal base in, in. <br /> <br />.167 <br />.250 <br />,383 <br /> <br />16 <br />16 <br />16 <br /> <br />,10 <br />,10 <br />,13 <br /> <br />,15 <br />,20 <br />,25 <br /> <br />5. Fabricated or standard elbow, fabricated or <br />standard tee with main tile line or plug in upstream <br />end. or standard tee with one end embedded in <br />concrete. <br /> <br />6. The height ~ lnlet is above the sediment pool level <br />shall be such that the velocity 01 flow through the slots <br />is less than 2.0 feet per second. <br /> <br />7. Head on the orifice, if placed as suggested, may <br />be figured by adding 0.7 times the maximum depth of <br />imlX'onded water plus the depth of the orifice below <br />grade. Has a relatively constant rats of change. <br /> <br />Figure 6,1-7: Slotted riser standard dimensions <br /> <br />6,1-10 <br /> <br />10/89 <br /> <br />I <br /> <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />. <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br /> <br />I <br />
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