> ## 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.

# Connections

> Steel, timber and concrete connection calculators for Australia and New Zealand.

<CardGroup cols={3}>
  <Card title="Design a Steel Bolt Connection to AS 4100:2020" icon="calculator" href="/docs/calculators/au/connections/steelBoltAS4100-2020">
    Design and analyze steel bolt connections to AS 4100:2020. Supports arbitrary bolt layouts with shear, tension, bearing, and friction serviceability checks.
  </Card>

  <Card title="Design a Weld Connection to AS 4100:2020" icon="calculator" href="/docs/calculators/au/connections/steelWeldsAS4100-2020">
    Analyze and design weld connections to AS 4100:2020, Cl 9.6. Checks fillet weld and butt weld capacity under combined shear and tension force per unit length.
  </Card>

  <Card title="Design a Timber Nail Connection to AS 1720.1:2010" icon="calculator" href="/docs/calculators/au/connections/timberNail">
    Check the capacity of nailed timber connections to AS 1720.1:2010.
  </Card>

  <Card title="Design a Timber Bolt Connection to AS 1720.1:2010" icon="calculator" href="/docs/calculators/au/connections/timberBolt">
    Design timber bolted connections to AS 1720.1:2010. Checks bolt patterns under direct shear, in-plane moment, and tension for Australian timber construction.
  </Card>

  <Card title="Design a Timber Screw Connection to AS 1720.1:2010" icon="calculator" href="/docs/calculators/au/connections/timberScrew">
    Design timber screwed connections to AS 1720.1:2010. Checks screw patterns under direct shear, in-plane moment, and tension capacity.
  </Card>

  <Card title="Calculate Concrete Development Length to AS 3600:2018" icon="calculator" href="/docs/calculators/au/connections/concreteDevelopmentLength">
    Calculate tension and compression development lengths for reinforcement to AS 3600:2018 (Amdt 2), with code references and modification factors.
  </Card>
</CardGroup>

### Older Code Editions

<CardGroup cols={3}>
  <Card title="Design a Steel Bolt Connection to AS 4100:1998" icon="calculator" href="/docs/calculators/au/connections/steelBolt">
    Design bolt groups under shear, tension and combined loading to AS 4100:1998 (R2016). An earlier code edition, kept for existing projects.
  </Card>

  <Card title="Design a Weld Connection to AS 4100:1998" icon="calculator" href="/docs/calculators/au/connections/steelWelds">
    Design fillet and butt weld connections to AS 4100:1998 (R2016). An earlier code edition, kept for existing projects.
  </Card>
</CardGroup>