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CCP 09-10-2001
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CCP 09-10-2001
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<br />Chapter 5: InfiI tration Trenches <br /> <br />5.5 <br /> <br />DESIGN 2: <br /> <br />Parkin~ 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 that 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 />; ._ ill <br />'....':1 <br />".. ''':'.. <br />">1(',:; : ~~ft. <br />. :.......~. .. <br />~) .~1. '.~" .~...~ <br />1j~,,:$.:.. ':~- a . <br />'II ~ ~. . <br /> <br />Side View <br /> <br />Oripline or Tree Should <br />Not Extend Over Trench <br /> <br />Berm (Grassed) <br />Slope of ==u ,~:t:f:.~;i2;;.-. ~::;:.,~~::~ <br />Partc:ing Lol U ':';i:~::::j,:. rl~{): ,t~r- <br /> <br />-- =~~!j:~1ti <br /> <br />em n .,..- .,<, .m '.-", <br />_ U :~~~ ~ ~~~ :~~!Q: 1~J; <br />~ -..' 11I_. 90ij_- ('" FllterSlnp <br /> <br /> <br />,.,,"~. :,~~ ~t~;~~~~~. ) <br />I.~ <br />LiP I <br /> <br />'- <br /> <br />, <br />, <br />.' <br />, <br />~.., \~1... <br />~~ '~ <br />. ="= <br /> <br />Slotted Curbs Act <br />as a level Spreader <br /> <br /> <br />~ <br /> <br />I <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 />I <br />.. <br /> <br />I <br />
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