The app provides HVAC duct sizing using ACCA's Manual D, the ANSI standard for residential duct design. It offers features like zooming, locking the wheel, and taking snapshots for reference.
by Air Conditioning Contractors of America★ 3.313 ratingsUtilities$24.99Data updated 2026-09-18
The app sizes high pressure gas piping systems. Users input gas flow, upstream pressure, and pipe properties to determine pipe diameters, velocity, and equivalent length.
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Calculate volume for slabs, footings, columns, walls, and stairs in cubic yards, feet, or meters. Estimate needed, determine weight and bag requirements. Calculate rebar spacing and truckloads.
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Calculate gas piping system sizes for low-pressure applications. Input total flow, pressure drop, diameter, or velocity. Output exact and nominal diameters, calculated velocity, and total equivalent length.
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