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Drainage Slope Calculator

Calculate drain line slope and verify IPC Section 704.1 compliance (1/8 in/ft minimum).

Horizontal run of the drain pipe

Total vertical drop from start to end of pipe run

Slope

2.08%

Slope Per Foot

0.250 in/ft

Excellent slope

Meets or exceeds 1/4 in/ft recommendation

Reference: IPC Section 704.1 -- Slope of horizontal drainage piping (1/8 in/ft minimum; 1/4 in/ft recommended)

For reference only. Verify with your local building code and a licensed professional before making decisions.

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