STRUCTURAL LOAD ARITHMETIC
Roof Load Calculator
Perform mathematical sums on user-specified dead, live, snow, and wind design loads across your entered roof square footage.
Roof Load Calculator
Perform arithmetic on user-specified dead, live, snow, and wind load design values.
sq ft
PSF
Typical asphalt roof: 10–15 PSF. Heavy tile/slate: 20–30 PSF.
PSF
Standard IBC/IRC minimum live load: 20 PSF.
PSF
Combined Load Arithmetic
$$text{Combined PSF} = text{Dead Load} + text{Live Load} + text{Snow Load} + text{Wind Load}$$
$$text{Total Weight (lbs)} = text{Combined PSF} times text{Roof Area (sq ft)}$$
This informational tool performs arithmetic summation of entered loads. Building structural safety and framing adequacy require review by a licensed structural engineer.