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SCOPE: THIS STANDARD SHOWS THE SIZES AND SEPARATION OF CONDUITS IN JOINT TRENCHES IN A RESIDENTIAL DEVELOPMENT AREA. SERVICE 2" OR 3"C ELECTRIC: 36" 6" 12" 3" 18" 18" T FINISH GRADE SINGLE SERVICE TRENCH T T 24" MIN. 18" 3" 12" 6" FINISH GRADE PL DUAL SERVICE TRENCH G TV SVC MIN. 30" 30" MIN. G 46" 46" 6" MIN. SEE NOTE D SEE NOTE C SEE NOTE B TV TV SEE NOTE D SEE NOTE C SEE NOTE B LEGEND TELECOMM. GAS CABLE TV FOREIGN UTILITY TELEPHONE 1 1/2"C 1 1/2"C 1 1/2"C 3" (TYP.) 120/240V SERVICE TRENCH, JOINT CS CS CS CS CS CS SERVICE 1 1/2"C NOTES: A. MINIMUM SEPARATIONS SHOWN BETWEEN CONCURRENTLY INSTALLED FACILITIES ARE PER G.O. 128, RULES 31.4-B2, 41.4-A2 AND 41.4-B2 AND INFORMAL MUTUAL AGREEMENT WITH UTILITIES INVOLVED AND AS SHOWN ON WORK ORDER DRAWINGS. B. TRENCH BOTTOM SHALL HAVE 9O% COMPACTION AND BE OF UNDISTURBED EARTH OR SELECT BACKFILL MATERIAL. C. CUSHION ELECTRICAL CONDUITS AT TRENCH BOTTOM WITH 3 INCHES OF SELECT BACKFILL MATERIAL. D. TRENCH BACKFILL TO GAS/TELEPHONE LEVEL SHALL HAVE 9O% COMPACTION AND BE OF SELECT BACKFILL MATERIAL. E. ELECTRICAL CONDUITS SHALL BE PLACED 3" MIN. FROM TRENCH WALLS. F. DEPTH AND SEPARATION SHALL BE MAINTAINED FOR JOINT TRENCH. G. 6O INCH MAXIMUM TRENCH DEPTH ALLOWED. H. SEE CU 15OO-2 FOR TRENCH LOCATION AND CONDUIT TYPE & SIZE REQUIREMENTS. I. FIELD CONDITIONS MAY REQUIRE ALTERNATE TELECOMMUNICATION LOCATION. J. UNDER TRAFFIC SERVICE CONDUITS FOR ELECTRIC SERVICES SHALL BE: IN CONCRETE ENCASED CONFIGURATION, 3" ENVELOPE MINIMUM, PVC SCHEDULE 80, HOT DIPPED GALVANIZED STEEL. SVC SVC MIN. 6" MIN. 36" MIN. CS SVC T G TV 12" 12" FILENAME: REVISION KEYS: ADDED / REVISED TEXT CONSTRUCTION STANDARD: ADDED / REVISED MATERIAL SHEET OF REVISION NO. ISSUE DATE : APPROVALS T&D MGR CITY OF ANAHEIM ELECTRICAL DIVISION PUBLIC UTILITIES DEPARTMENT OPS MGR T&D CONSTRUCTION STANDARDS PREP BY SYS PLN MGR SUB MAINT NEW SHEET NEW SHEET UNDERGROUND TRENCH DETAILS RESIDENTIAL DEVELOPMENT CU1500-3A REV 6 6 07-21 1 3 CU 1500-3A PREFERRED TELECOMM. LOCATION (TYPICAL) ALTERNATE TELECOMM. LOCATION (TYPICAL) SEE NOTE J ---PAGE BREAK--- 6.9kV PRIMARY ELECTRIC: SPLICE LEGEND STREET LIGHT TELEPHONE GAS FOREIGN UTILITY CABLE TV 2"C 2"C 2"C SERVICE SECONDARY CL C G T TV TV SIDEWALK AND TRENCH FINISH GRADE SL CURB AND GUTTER 2 1/2" 2 1/2" 4 1/2" 3" SVC 36" MIN. 18" MIN. 26" (TYP.) 1 1/2" MIN. L C SEE NOTE G 6.9kV PRIMARY TRENCH, JOINT 60" MAX. DEPTH CS CURB AND GUTTER PREFERRED TELECOMM. LOCATION SEE NOTE B TO TOP OF LARGEST CONDUIT TELECOMM. SERVICE SEE NOTE J TELECOMM. SEC NOTES: A. MINIMUM SEPARATIONS SHOWN BETWEEN CONCURRENTLY INSTALLED FACILITIES ARE PER G.O. 128, RULES 31.4-B2, 41.4-A2 AND 41.4-B2, AND INFORMAL MUTUAL AGREEMENT WITH UTILITIES INVOLVED AND AS SHOWN IN WORK ORDER DRAWINGS. B. GAS INSTALLATION IN JOINT TRENCH SHALL BE ELIMINATED WHERE STACKING OF ELECTRICAL DISTRIBUTION CONDUITS IS REQUIRED AND/OR MINIMUM SEPARATION CANNOT BE MET. C. GAS CO. REQUIRES 12" MIN. RADIAL SEPARATION WHEN PARALLELING OTHER UTILITIES. D. TRENCH BOTTOM SHALL HAVE 9O% COMPACTION AND BE OF UNDISTURBED EARTH. E. CONCRETE ENCASEMENT OF ELECTRICAL CONDUITS REQUIRED PER 1600-4. F. ELECTRICAL CONDUITS SHALL BE PLACED 3" MIN. FROM TRENCH WALLS. G. SHADE TOP OF ENCASEMENT WITH 3" OF SELECT BACKFILL MATERIAL. H. 60 INCH MAXIMUM TRENCH DEPTH ALLOWED. J. FIELD CONDITIONS MAY REQUIRE ALTERNATE TELECOMMUNICATION LOCATION. CONCRETE ENCASEMENT SEE NOTE E 3" 3" 3"-4"C 4"C 1 1/2"C 2"C 2"C - 3"C 3"-4"C 12"MIN. 12"MIN. L C CS SL SVC SEC G T TV (TYP.) 3" FILENAME: REVISION KEYS: ADDED / REVISED TEXT CONSTRUCTION STANDARD: ADDED / REVISED MATERIAL SHEET OF REVISION NO. ISSUE DATE : APPROVALS T&D MGR CITY OF ANAHEIM ELECTRICAL DIVISION PUBLIC UTILITIES DEPARTMENT OPS MGR T&D CONSTRUCTION STANDARDS PREP BY SYS PLN MGR SUB MAINT NEW SHEET NEW SHEET UNDERGROUND TRENCH DETAILS RESIDENTIAL DEVELOPMENT CU1500-3A REV 6 6 07-21 2 3 CU 1500-3A ---PAGE BREAK--- TELECOMM. ELECTRIC: LEGEND STREET LIGHT TELEPHONE GAS FOREIGN UTILITY CABLE TV 4"C 4"C 4"C SERVICE 6.9kV PRIMARY SECONDARY 12kV PRIMARY CL C G T TV TV P P L C SIDEWALK AND TRENCH FINISH GRADE SL SVC 12"MIN. 4 1/2" 6" MIN. 4 1/2" 3" 3" 6" 3" SEC 18" MIN. 40" 3" (TYP.) (TYP.) 1 1/2" SEE NOTE G SEE NOTE E 12kV IN-TRACT BACKBONE TRENCH, JOINT 36" MIN. NOTES: A. MINIMUM SEPARATIONS SHOWN BETWEEN CONCURRENTLY INSTALLED FACILITIES ARE PER G.O. 128, RULES 31.4-B2, 41.4-A2 AND 41.4-B2, AND INFORMAL MUTUAL AGREEMENT WITH UTILITIES INVOLVED AND AS SHOWN OR WORK ORDER DRAWINGS. B. GAS INSTALLATION IN JOINT TRENCH SHALL BE ELIMINATED WHERE STACKING OF ELECTRICAL DISTRIBUTION CONDUITS IS REQUIRED AND/OR MINIMUM SEPARATION CANNOT BE MET. C. GAS CO. REQUIRES 12" MIN. RADIAL SEPARATION WHEN PARALLELING OTHER UTILITIES. D. TRENCH BOTTOM SHALL HAVE 9O% COMPACTION AND BE OF UNDISTURBED EARTH. E. CONCRETE ENCASEMENT OF ELECTRICAL CONDUITS REQUIRED PER 1600-4. F. ELECTRICAL CONDUITS SHALL BE PLACED 3" MIN. FROM TRENCH WALLS. G. SHADE TOP OF ENCASEMENT WITH 3" OF SELECT BACKFILL MATERIAL. H. 60 INCH MAXIMUM TRENCH DEPTH ALLOWED. I. FIELD CONDITIONS MAY REQUIRE ALTERNATE TELECOMMUNICATION LOCATION. 4"C 2 "C 2"-3"C 3-4"C 3"-4"C 6"C 12"MIN. P L SVC SEC SL C TV T G FILENAME: REVISION KEYS: ADDED / REVISED TEXT CONSTRUCTION STANDARD: ADDED / REVISED MATERIAL SHEET OF REVISION NO. ISSUE DATE : APPROVALS T&D MGR CITY OF ANAHEIM ELECTRICAL DIVISION PUBLIC UTILITIES DEPARTMENT OPS MGR T&D CONSTRUCTION STANDARDS PREP BY SYS PLN MGR SUB MAINT NEW SHEET NEW SHEET UNDERGROUND TRENCH DETAILS RESIDENTIAL DEVELOPMENT CU1500-3A REV 6 6 07-21 3 3 CU 1500-3A CURB AND GUTTER PREFERRED TELECOMM. LOCATION CONCRETE ENCASEMENT 12" MIN. SEPARATION TOP OF LARGEST CONDUIT ALTERNATE TELECOMM LOCATION SEE NOTE H 60" MAX. DEPTH