An underground utility pull box is installed on a minimum eight-inch gravel base over compacted soil with a drain hole. Conduits run through the pull box window openings with end bell fittings at the interior and slope four percent away from the box. The precast concrete pull box, manufactured by Jensen, Oldcastle or equal, is adjusted so the lid is flush with paved areas or one inch above unpaved areas, maintaining six inches minimum from driveway edges and four inches minimum from curbs. A bolt-down steel traffic cover per AASHTO H-20 requirements is secured with bolts and tamperproof screws.
LINE OF FINISH GRADE EXTENSION QUANTITY PER FINAL TRENCH DEPTH AND CONDUIT ROW ARRANGEMENTS. ADJUST PULL BOX HEIGHT FOR LID FLUSH WITH PAVED AREA OR LID 1" ABOVE UNPAVED AREA MAINTAIN 6" MINIMUM FROM DRIVEWAY EDGE AND MINIMUM 4" FROM CURB OR PER CIVIL RQMTS RUN CONDUIT THROUGH PULL BOX WINDOW/OPENINGS. PROVIDE WITH END BELL FITTINGS AT PULL BOX INTERIOR AND SLOPE TO DRAIN (4%) AWAY FROM PULL BOX PULL BOX AS MANUFACTURED BY JENSEN, OLDCASTLE OR EQUAL. BASE ROCK PER SPECS COMPACTED SOIL DRAIN HOLE BOLT DOWN STEEL TRAFFIC COVER PER AASHTO H-20 REQUIREMENTS. IDENTIFY PER SYSTEM: 1. ELECTRICAL 2. COMMUNICATION 3. FIRE ALARM 24"MIN 8" 12" PULL BOX NOTES 1. ALL BOXES SHALL BE SET ON A MINIMUM 8" GRAVEL BASE WITH 1/2" DIAMETER GRAVEL. 2. PROVIDE WATERTIGHT SPLICES AND CAPS FOR POWER CONDUCTORS. SPLICES AND CAPS FOR COMMUNICATION CONDUCTORS ARE NOT ACCEPTABLE WITHOUT PRIOR ENGINEER/OWNER APPROVAL. COMMUNICATION CONDUCTORS SHALL BE CONTINUOUS WITH SERVICE LOOPS PROVIDED IN PULL BOXES. 3. PROVIDE SEALING GEL IN ALL CONDUITS (BOTH W/ CONDUCTORS AND IN EMPTY SPARE CONDUITS.) THE GEL SHALL BE INSERTED IN THE CONDUIT TO A DEPTH OF 6" AND FLUSH W/THE END OF THE CONDUIT. 4. PROVIDE IDENTIFYING TAGS ON ALL POWER AND COMMUNICATION CONDUCTORS IN PULLBOXES. 5. PROVIDE IDENTIFICATION ON CONCRETE COVER STATING "ELECTRICAL" OR "COMMUNICATION". 6. PROVIDE BOLTS AND TAMPERPROOF SCREWS TO SECURE COVER. 6"MIN
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