A four-conduit electrical ductbank assembly features conduits arranged in a square configuration with 7.5-inch center-to-center spacing horizontally and vertically. The top of the ductbank sits at a depth of 24 inches minimum to 36 inches maximum below finished grade per project notes. A continuous underground-line conducting warning tape is installed 12 inches below finished grade, centered above the ductbank assembly within the earth backfill.
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