> ## Documentation Index
> Fetch the complete documentation index at: https://calcs.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Loads

> Wind, seismic and snow load calculators for Canada to NBCC.

### Wind Loads

<CardGroup cols={3}>
  <Card title="Calculate Wind Loads - Main Structural System (NBCC 2025)" icon="calculator" href="/docs/calculators/ca/wind-loads/loadsWindMainStructuralSystemNBCC-2025">
    MWFRS wind pressures for Load Case A and Load Case B on the NBCC 2025 1-in-500 hazard basis, from your building geometry, terrain exposure and roof slope.
  </Card>

  <Card title="Calculate Wind Loads - Components and Cladding (NBCC 2025)" icon="calculator" href="/docs/calculators/ca/wind-loads/loadsWindComponentsAndCladdingNBCC-2025">
    Peak local wind pressures for walls, roofs, overhangs and parapets on the NBCC 2025 1-in-500 hazard basis, from your tributary areas and building geometry.
  </Card>
</CardGroup>

#### Older Code Editions

<CardGroup cols={3}>
  <Card title="Calculate Wind Loads - Main Structural System (NBCC 2020)" icon="calculator" href="/docs/calculators/ca/wind-loads/loadsWindMainStructuralSystemNBCC-2020">
    Calculate wind pressures on the main structural system to NBCC 2020 and NBCC 2025.
  </Card>

  <Card title="Calculate Wind Loads - Components and Cladding (NBCC 2020)" icon="calculator" href="/docs/calculators/ca/wind-loads/loadsWindComponentsAndCladdingNBCC-2020">
    Calculate wind pressures on components and cladding to NBCC 2020 and NBCC 2025.
  </Card>

  <Card title="Calculate Wind Loads (NBCC 2020)" icon="calculator" href="/docs/calculators/ca/wind-loads/loadsWindNBCC2020">
    Pull the reference wind pressure and climatic data for any Canadian site from the NBCC 2020 tables (Appendix C) as the basis for design wind loads.
  </Card>
</CardGroup>

### Seismic Loads

<CardGroup cols={3}>
  <Card title="Calculate Seismic Loads (NBCC 2025)" icon="calculator" href="/docs/calculators/ca/seismic-loads/loadsSeismicNBCC-2025">
    Design base shear and story forces to NBCC 2025 Cl. 4.1.8 from the six-period hazard values, site class and seismic force-resisting system.
  </Card>
</CardGroup>

#### Older Code Editions

<CardGroup cols={3}>
  <Card title="Calculate Seismic Loads (NBCC 2020)" icon="calculator" href="/docs/calculators/ca/seismic-loads/loadsSeismicNBCC-2020">
    Determine design base shear to NBCC 2020 (Art. 4.1.8) with the Equivalent Static Force Procedure, and distribute forces story by story.
  </Card>
</CardGroup>

### Snow Loads

<CardGroup cols={3}>
  <Card title="Calculate Snow Loads (NBCC 2025)" icon="calculator" href="/docs/calculators/ca/snow-loads/loadsSnowNBCC-2025">
    Get balanced, unbalanced, drift, and sliding roof snow loads to NBCC 2025 Cl. 4.1.6, including the new thermal factor CT and winter wind factor Fws.
  </Card>
</CardGroup>

#### Older Code Editions

<CardGroup cols={3}>
  <Card title="Calculate Snow Loads (NBCC 2020)" icon="calculator" href="/docs/calculators/ca/snow-loads/loadsSnowNBCC-2020">
    Get balanced, unbalanced, drift, and sliding roof snow loads to NBCC 2020 Cl. 4.1.6 from the 1-in-50-year ground snow basis, with each code clause shown.
  </Card>
</CardGroup>