1. What is Snow Load?

Snow load is the downward force on a building's roof by the weight of accumulated snow and ice. It's measured in pounds per square foot (psf). Proper calculation is essential for structural safety in snowy regions.

2. How Does the Calculator Work?

The calculator uses the snow load equation:

Where:

• \( zip\_based\ ground\_snow \) — Base snow load for the location (psf)
• \( factors \) — Adjustments for roof type, exposure, and building importance

Explanation: The equation accounts for geographic snow patterns and building-specific factors that affect snow accumulation.

3. Importance of Snow Load Calculation

Details: Accurate snow load estimation is crucial for preventing roof collapses, ensuring building safety, and complying with local building codes.

4. Using the Calculator

Tips: Enter a valid 5-digit US zip code, select roof type, exposure conditions, and building importance. The calculator provides an estimate based on these parameters.

5. Frequently Asked Questions (FAQ)

Q1: Where does the ground snow data come from?
A: Ground snow loads are typically based on ASCE 7 maps and local building code requirements for each zip code.

Q2: What's the difference between ground snow and roof snow load?
A: Ground snow is the measured accumulation on the ground. Roof snow load accounts for how snow accumulates on roofs differently.

Q3: How often do snow load requirements change?
A: Building codes typically update every 3-5 years, but extreme weather events may prompt interim updates.

Q4: Are there limitations to this calculator?
A: This provides estimates only. For actual construction, consult local building officials and a structural engineer.

Q5: What about drifting snow?
A: Drift loads require special calculations not included in this basic calculator.