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RCP calculator

Graphic cross-section plus cubic feet and cubic yards for the waterway bore and the concrete annulus (OD = ID + 2×wall). Straight barrel only — bells, gaskets, and placement waste are excluded.

RCP quantities

Reinforced concrete pipe: bore (ID) and concrete shell (OD − ID) for a straight run. Does not include bells, gaskets, chamfers, or placement loss — verify with the producer sheet and your engineer.

Bore (ft³)
1,256.64
yd³: 46.542
Concrete shell (ft³)
578.14
yd³: 21.413

Shell = π((58.00″/24)² − (48.00″/24)²) × 100 ft (smooth cylinder — corrugations / bells not modeled).

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