Laserfiche WebLink
15' MIN. <br />.. <br />I . <br />iN <br />, 1 <br />OUTLET PIPES <br />44 NON-PERFORATED PIPE, <br />100' MAX. O.C. HORIZONTALLY <br />30' MAX. O.C. VERTICALLY <br />,I <br />/1 <br />.1-- <br />. <br /> -- 296MIN:___SX BACKCUT <br />/ / BENCHING <br />- 'r-- <br />a <br />I. 4-J1'* <br />If 296)UN. - <br />I /3./0 <br />/1 SUBDMIN ALTERNATE B <br />1 I.15' MIN. <br />KEY DEPTH I KEY WIDTH <br />2' MIN. <br />/MIN. 12" OVERLAP FROM THE TOP <br />SUBDRAIN ALTERNATE A POSrTIVE SEAL SHOULD BE PROVIDED <br />AT THE JODIT <br />OUTLET PIPE <br />(NON-PERFORATED) <br />FILTER FABRIC <br />..*0Aj° OR <br />NUIVALEND <br />CALTNS CLASS 2 <br />FILTER MATERIAL OFT?/FT) <br />OUTLET PIPE <br />(NON-PBUORATED) <br />\7-34 <br />3/4' ROO< OFT.3/FT). <br />WRAPPED IN FILTER FABRIC <br />T-CONNECTION FROM <br />COU-ECTION MPE TO OUTLET MI)E <br />• SUBDRAIN IN5TAUATION - Subdraln collector pipe shall be Installed with perforations down or, <br />unless otherwise designated by the geotechnical consultant Oudet pipes shall be non-perfonted <br />pipe. The subdrain pipe shall have at least 8 perforations uniformly spaced per foot Petforation shall <br />be 1/4" to 1/2" If drilled holes are used. All subdraln pipes shall have a gradient at least 296 towards the <br />outlet. <br />SUBDRAIN PIPE - Subdrain pipe shall be ASTM D2751, ASTM D1527 (Schedule 40) or SDR 23.5 ABS pipe <br />or ASTM D3034 (Schedule 40) or SDR 23.5 PVC pipe. <br />All outlet pipe shall be placed in a trench and, after fill is placed above it; rodded to verify integrity. <br />BUTTRESS OR <br />REPLACEMENT FILL <br />SUBDRAINS <br />GENERAL EARTHWORK AND GRADING <br />SPECIFICATIONS <br />STANDARD DETAILS D <br />Leighton <br />P:or-o\templat\d•t,Mbuttre,Lripl-b.dwg moo)