Laserfiche WebLink
• <br />forb,BaconB>tPAe - dtah Inc. 4.SF -06 <br />INGtNIINe CONSTAUCTON• SITE PREPARATION & DRAINAGE REV. 1 <br />GALT LAKE cnv, UTAH STANDARD FORM <br />i . RUNOFF & SEDIMENT CALCULATIONS 9/80 <br />SHT. 10 OF 12 <br />DETERMINATION OF SEDIMENT VOLUME, SETTLING VOLUME <br />AND TOTAL STORAGE VOLUME OF SEDIMENTATION PONDS <br />PROJECT WGSTE12N 1 = ULL5 0rthp0 /A i je - - JOB NO. OC- 34-,(. <br />'5Ent yvtFnJ ?P Qo roo f =(Z L- Got PL- _ POND NO. _ i <br />BYL 171K.Kb5DATE (o.b,cou CHECKED BY DATE <br />8. PRINCIPAL SPILLWAY DESIGN <br />10 year 24 hour Storm Discharge 0 = 32 . 2 • cfs (See Section 6) <br />A. Drop Inlet With Splitter type Headwall (SCS Engineering Field Manual) <br />L 1'65 ft. Y= o_!o ft. H= 24' ft. 0= 401 cfs <br />Dp = 2 Fig 6-25 or Fig 6 -26 eq V =24,04 X 0.•74 = 4 0.59 <br />Dr = Fig 6 -27 f <br />h (req'd) _ �T_ Fig 6 -27 <br />h (used) _ " <br />is <br />• <br />B. Anti Seep Collars (Increase Seepage path by 15 %) <br />S IZ k7 3A <br />Ls = v(2 +4) 11+ 111 j = -L(3 +4) [1+ O_i2L) _ $4 _ <br />.25 -Sp .25 - LLU, <br />n_ d V_ 2 <br />Ls + 2n V ? 1.15Ls � �+ 2x 4' x? > 1.15x.54, <br />Cs= Il 1 0 0 ,1 • > 97. <br />r <br />Max. Collar Spacing = 14 V = 14 x? = 11 <br />Emergency Spillway Crest <br />r 5 h Riser Assumed Phreatic Line <br />= Anti -seep collars <br />q 3.0 <br />Principle y D 1 1 Pipe conduit 1 <br />Spillway <br />Crest Dp Sp <br />V Cs <br />Ls <br />L <br />H = Head on pipe spillway (pipe flow), centerline of outlet to emergency spillway <br />crest or to design high water if no emergency spillway <br />h = Head over riser crest 0.0 min.) <br />L = Length of pipe <br />D = <br />Diameter of pipe conduit <br />D = <br />Diameter of riser <br />Sp = <br />Slope of pipe conduit <br />n = No. collars <br />V = <br />Collar projection (2' min.) <br />Cs - <br />Collar spacing <br />�INVE .T E 1 <br />76roZ T <br />C,G,2G. <br />5C eo2 <br />24 5- 14 <br />w <br />n <br />is <br />D <br />