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37i3-6 Pnnd <br />lable 2. --Acr.eptable PVC pine fnr use in earth damsl • <br />Nnrmal pipe size Scnedule fnr standard Maxim~~m nap+h. of <br />Dimension rai'i0 (SDR) fill nv~r nine <br />in ft <br />Schedule a0 10 <br />6, 10, 12 Schedule BO !S <br />SDR 26 ]0 <br />1Polyvinyl chloride pipe, PVC 1120 or PVC .I Z7n, cnnf nrming to <br />ASTM-D-1785 or ASTM-D-2241. <br />'cable 3. --Minimum gage for corrugated metal pipe C2.-7_/3-in x 1/2-in <br />corrugationsJl <br />Minimum gauge for M.nimum thickness (in) <br />steel pipe with of aluminum pipet <br />Fill diameter (in) of-- ui+n diamoter (in) of-- <br />height 21 and 21 antl <br />(ft> less 2a 30 36 a2 aR less ~c 30 ?o <br />1 - 15 16 16 16 1< 12 10 (:. 06 0.0~ O.G?~ 0.0°Q~ <br />15 - 20 16 16 16 lc 12 10 .06 .0?~ .1C.'~ .10, <br />20 - 25 16 1~ tc 1?_ 10 10 __ .0= .ACS ....- <br />1Pipe with 6-, and 10-in diameters has ]-1/2-.in x 1,'a-in r..orri~aa{ions. <br />2Riveted or helical fahrication. <br />3Not permitTed. <br />Table 4 - Minimum spillway capacity <br /> Minimum. lesion <br /> atn- <br />Drainag~ CffeCLivp heinht of S{pra0e FreOVenry Min•mVm <br />arP~ dam= CV'=-inn <br />acre ft acre-`- yr nr <br />20 or less 20 or less Less Char. 50 10 2c <br />20 or less More than 20 Less {har ~~0 25 2c <br />Moro than 20 20 or less L=ss Than 50 ?5 ^= <br />A! I n{here ~~(~ '~L <br />'As defined undor "Scope." <br />~SeleCt rain dictribu{~on based nn clima{oingical re~]irn. <br /> <br />S~S, Colorado, January l9N? <br />