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CCP 08-20-2001
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CCP 08-20-2001
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5/8/2007 1:16:39 PM
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<br />Chap~er 5: Infil~r4~ion Trenches <br /> <br />5,5 <br /> <br />DESIGN 2: <br /> <br />P.rkin~ Lot Perimeter (Figure 5,3). This design accepts sheet flow <br />from the lower end of a parking lot. Slotted curb spacers are used <br />as level spreaders to route sheet flow from the parking lot over <br />the 20 foot wide filter strip (and also keep cars from damaging the <br />strip). After being filtered over the grass strip, runoff enters <br />the surface of the trench.. A shallow berm is installed at the far <br />end of the trench to ensure t.hat runoff does not escape. The <br />trench should have an overflow to pass large design storms. such as <br />a PVC 'pipe with holes drilled on its underside. set near the top of <br />the trench (Figure 5,3), <br /> <br />Figure 5.3: Parking lot Perimeter Trench Design <br /> <br />Top View <br /> <br />;; . . <br />..' "~ <br />. .:';:::,.: <br />~ {;". ,,:.It <br />.',. ,:...- <br />. :.-..-"' "" <br />~'.~1"';..:'.10 <br />1J:.:":~.~ --:~- <br />'J,j' {-. .... <br /> <br />Side View <br /> <br />Dripline of Tree Should <br />Nol Extend Ower TrenCh <br /> <br />Berm (Grassed) <br /> <br /> <br />~=r"' 1 ifhU ~o==, <br /> <br />c." ~ ,'..-.,<, ,00 ','" <br />- ~ I~ ~ ft.t ~fb\ ~~; F,It" S'np <br />~".. "'" ~!~ ~f:fo~,~;'~~~"" ! <br />~. I~ <br /> <br />'--+ <br /> <br />, <br />, <br />, <br />, ' <br />~..\~ <br /> <br />== <br /> <br /> <br />I <br /> <br />J <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />II <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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