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Downspout Route Length Calculator

Estimate straight-line horizontal route length and an explicit pipe-order allowance from two perpendicular offsets.

Inputs

Range: at least 0 ft

Measure one horizontal plan offset between the downspout and destination.

Range: at least 0 ft

Measure the perpendicular horizontal plan offset.

Range: at least 0 %

Enter an explicit allowance for cuts, connections, and routing; no universal waste percentage is assumed.

Result

Pipe length to order (ft)
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Straight-line horizontal length (ft)
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Estimate scope
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