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積雪荷重計算機

簡易ASCE 7法による設計積雪荷重を計算します。

はじめに

Snow Load Calculator — Design snow load using simplified ASCE 7 method. Enter Ground snow load (kPa), Exposure factor, Thermal factor, Importance factor to get an instant, accurate result.

計算式

Simplified ASCE 7 flat-roof snow load: design snow load = 0.7 × exposure factor × thermal factor × importance factor × ground snow load. This mirrors the ASCE 7 flat-roof snow load equation, pf = 0.7 × Ce × Ct × Is × pg, without the additional code-required slope and thermal adjustments.

ステップごとの説明

  1. Enter the Ground snow load (kPa).
  2. Enter the Exposure factor.
  3. Enter the Thermal factor.
  4. Enter the Importance factor.
  5. Click Calculate to see your result instantly.

実例

Example: With Ground snow load (kPa) = 1.5, Exposure factor = 1, Thermal factor = 1, Importance factor = 1, the Snow Load Calculator gives Design Snow Load: 1.05.

よくある質問

Is this the full ASCE 7 snow load calculation?
No, this is a simplified version of the ASCE 7 flat-roof formula — it omits roof-slope factors and other code-specific adjustments, so results should be treated as an estimate only.
Where do I find my ground snow load (pg)?
Ground snow load is set by local building code based on geographic location and elevation — check with your local building department or ASCE 7 hazard maps.
Can I use this for a building permit?
No — final roof snow load calculations for construction must be performed and stamped by a licensed structural engineer per your local code.
What inputs does the Snow Load Calculator need?
You'll need to provide: Ground snow load (kPa), Exposure factor, Thermal factor, Importance factor. All fields use sensible defaults, so you can see a working example immediately and then adjust the values to match your own numbers.
How accurate is the Snow Load Calculator?
The Snow Load Calculator applies the formula exactly as calculated — Simplified ASCE 7 flat-roof snow load: design snow load = 0.7 × exposure factor × thermal factor × importance factor × ground snow load. This mirrors the ASCE 7 flat-roof snow load equation, pf = 0.7 × Ce × Ct × Is × pg, without the additional code-required slope and thermal adjustments. — so results are precise for the inputs you provide. Accuracy depends on entering correct, realistic input values.
Is the Snow Load Calculator free to use?
Yes, the Snow Load Calculator is completely free, requires no signup, and runs instantly in your browser.

積雪荷重計算機について

The Snow Load Calculator uses a real, verifiable formula — Simplified ASCE 7 flat-roof snow load: design snow load = 0.7 × exposure factor × thermal factor × importance factor × ground snow load. This mirrors the ASCE 7 flat-roof snow load equation, pf = 0.7 × Ce × Ct × Is × pg, without the additional code-required slope and thermal adjustments. — so results are accurate every time, not an approximation.