Labor Library
Installed manhours per unit. Every figure traces to a public source or a stated derivation; hover a row for the formula.
Installed MH/LF = handling + one joint per stick + hangers at code spacing (ASME B31.9 / IPC). Fittings are added by the Assembly Builder. Source tables: TheProjectEstimate.com, Pipe Installation Man Hours (2025). Copper, stainless, grooved, press and brazed are derived by the ratios shown in each row's formula. Calibrate against your job cost history before bidding.