Laserfiche WebLink
~: b. SLOWER COLLECTION SY~TEM,S <br /> <br />~ I. DESIGN- 15RAVI'rY SYSTEMS <br /> <br /> System shall be oeslgnecl on the basis o~ an in+low ra~e o~ <br /> 4o0 gallons per day p~r sihgle ,~aleily r~sidmntial unit. <br /> <br /> Non resiOential ~lows shall be c~etermineo by the Design <br /> Engineer. in ac~or~an~e ~;itl'~ state guidelines. <br /> <br /> Minimum line s~.ze shall be 8 inches. <br /> <br /> sewers 15~' d~ame~er or less. With se~ers 18" or l¢*rger~ %ne <br /> spacing miry om increased i~ approved ~y the C~un~y Engineer. <br /> <br /> Minimum cover ~or PVC pipe i~, 5 ~eet. <br /> <br /> Maximum 'depth ~or PVC pipe is 18 ~m~t. <br /> <br /> Minimum slope ~or 8 inch pipe is 0.~0%. <br /> <br /> Ma:(imum desired slop~ is 10.0%. When velocities e:4c~cl 1~ <br /> <br /> ~ls~ure the mtmbility o~ the pipe. <br /> <br /> A drop manhole is r~.~quired ~hen the difference in el~vatio~ <br /> between the in.l:lk~ent and ef-floent pipe~ <br /> <br /> Minimum de~ired ~all acro~ a m~nhc].e ie 0.20 ~eet. AL1 <br /> inverts mhmi] be fermed ,~nd sloped eo that the 'Fmli ~ros the <br /> in~luent invert to the p~v~ invert sh~l). ~ot ex~:eed 0.5'. <br /> <br /> stree~ if curb an0 gutter is to be installed or ~rom top of <br /> <br /> Minimum right-of-way width <br /> <br /> Afl d~sign ~nal 1 De btric~ly in <br /> standards and requiremen%s o~ the North Carolina Department <br /> <br /> Environmenta). Management Division. <br /> <br /> <br />