This structural detail shows a pipe passing through a concrete footing and below-grade trench configuration with front and side elevation views. The installation requires six inches minimum clearance above and below the pipe outer diameter, with eight inches minimum on each side within the footing profile. A two-inch typical clearance is maintained between sleeves and pipes. The side view indicates a one-foot six-inch minimum trench width with tamped sand bedding and compacted backfill placed above the pipe zone. No excavation is permitted below the designated footing and trench subgrade lines.
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