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DESIGN FINISH SLOPE n OUTLETS TO BE SPACED AT 100' MAXIMUM INTERVALS. EXTEND 12 INCHES BLANKET FILL IF RECOMMENDED - BEYOND FACE OF SLOPE 7 BY THE GEOTECHNICAL ENGINEER AT TIME OF ROUGH GRADING CONSTRUCTION. BUTTRESS OR SIDEHILL FILL 10' MIN-. 25:.MAX. ve b 15' MAX.1 . P'*7,77>) -DETAIL "A" 4-INCH DIAMETER NON-PERFORATED L- OUTLET PIPE TO BE LOCATED IN FIELD BY THE SOIL ENGINEER. 2' CLEAR - "FILTER MATERIAL" TO MEET FOLLOWING SPECIFICATION OR APPROVED EQUIVALENT: (CONFORMS TO EMA STD. PLAN 323) "GRAVEL" TO MEET FOLLOWING SPECIFICATION OR APPROVED EQUIVALENT: MAXIMUM SIEVE SIZE PERCENTAGE PASSING SIEVE SIZE PERCENTAGE PASSING 1" 100 11/2"100 314"90-100 NO. 4 50 3/8"40-100 NO. 200 8 NO. 4 25-40 SAND EQUIVALENT = MINIMUM OF 50 NO. 8 18-33 NO. 30 5-15 NO. 50 0-7 NO. 200 0-3 OUTLET PIPE TO BE CON- NECTED TO SUBDRAIN PIPE - WITH TEE OR ELBOW 1 -FILTER MATERIAL - MINIMUM OF FIVE CUBIC FEET PER FOOT OF PIPE. SEE ABOVE FOR FILTER MATERIAL SPECIFICATION. ALTERNATIVE: IN LIEU OF FILTER MATERIAL FIVE CUBIC FEET OF GRAVEL PER FOOT OF PIPE MAY BE ENCASED IN FILTER FABRIC. SEE ABOVE FOR GRAVEL SPECIFICATION. â€¢70000. FILTER FABRIC SHALL BE MIRAFI 140 OR EQUIVALENT. FILTER FABRIC SHALL BE LAPPED A MINIMUM OF 12 INCHES -ON ALL JOINTS. DETAIL A - MINIMUM 4-INCH DIAMETER PVC SCH 40 OR ABS CLASS SDR 35 WITH A CRUSHING STRENGTH OF AT LEAST 1,000 POUNDS, WITH A MINIMUM OF 8 UNIFORMLY SPACED PERFORATIONS PER FOOT OF PIPE INSTALLED WITH PERFORATIONS ON BOTTOM OF PIPE. PROVIDE CAP AT UPSTREAM END OF PIPE. SLOPE AT 2 PERCENT TO OUTLET PIPE. NOTES: 1. TRENCH FOR OUTLET PIPES TO BE BACKFILLED WITH ON-SITE SOIL. SLOPE FILL SUBDRAINS GRADING GUIDE SPECIFICATIONS NOT TO SCALE SOUTHERN DRAWN: JAS CHKD. GKM CALIFORNIA -- _GE*TgCHNICAL PLATE D-6 V