> ## 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.

# Overview

> Engineering reference articles supporting Calcs.com calculators

Background engineering concepts referenced across Calcs.com calculators, useful when interpreting results or setting up complex designs.

### Beams and Deflection

<CardGroup cols={3}>
  <Card title="Calculate Beam Deflection" icon="chart-line" href="/docs/running-calculations/engineering-concepts/calculate-beam-deflection">
    The closed-form deflection formula for a simply supported beam, and when to use the beam calculator instead.
  </Card>

  <Card title="Size a Beam from Deflection" icon="ruler-2" href="/docs/running-calculations/engineering-concepts/size-beam-from-deflection">
    Worked examples in US and metric units for sizing a beam from a deflection limit.
  </Card>

  <Card title="Calculate Bending Stress from the Moment" icon="math-function" href="/docs/running-calculations/engineering-concepts/bending-stress-from-moment">
    Get bending stress from a moment using the elastic section modulus.
  </Card>

  <Card title="Find How Far a Steel Beam Can Span" icon="ruler-measure" href="/docs/running-calculations/engineering-concepts/steel-beam-span">
    Find the usable span of a steel beam by iteration, checking deflection and strength.
  </Card>

  <Card title="Creep Deflection" icon="book" href="/docs/running-calculations/engineering-concepts/creep-deflection" />

  <Card title="Shear Deflection in Wood Beam Calculators" icon="ruler" href="/docs/running-calculations/engineering-concepts/shear-deflection-wood-beam-calculators">
    Please note that shear deflection is applied to I-joist sections in the AU Timber Beam Calculator, but is not performed for other AU timber sections.
  </Card>

  <Card title="Typical Formula References" icon="book" href="/docs/running-calculations/setting-up-a-calculation/geometry-and-supports/typical-formula-ref">
    A quick guide showing how to use formulas and references in Calcs.com and typical ones you may encounter in our calculators.
  </Card>
</CardGroup>

### Design Methods and Codes

<CardGroup cols={3}>
  <Card title="ASD and LRFD Calculations" icon="calculator" href="/docs/running-calculations/engineering-concepts/asd-lrfd-calculations" />

  <Card title="Get Eurocodes and National Annexes" icon="book" href="/docs/running-calculations/engineering-concepts/eurocodes-national-annexes-where-to-get-them">
    Eurocodes and National Annexes - Where to Get Them!
  </Card>
</CardGroup>

### Structures

<CardGroup cols={3}>
  <Card title="Truss Types" icon="book" href="/docs/running-calculations/engineering-concepts/truss-types">
    A quick guide displaying the different types of trusses in Calcs.com and their advantages for various applications in residential design.
  </Card>

  <Card title="Size and Place Supports in Residential Design" icon="home" href="/docs/running-calculations/engineering-concepts/supports-residential-design">
    Why supports matter in residential work, how they are sized and placed, and common materials.
  </Card>
</CardGroup>

### Foundations and Retaining Walls

<CardGroup cols={3}>
  <Card title="Footings Under Biaxial Bending" icon="pyramid" href="/docs/running-calculations/engineering-concepts/footings-under-biaxial-bending">
    How Calcs.com finds soil pressures on a spread footing under bending in both directions at once, and how to do the same by hand.
  </Card>

  <Card title="Sleeper Retaining Wall: Comparing Analysis Methods" icon="book" href="/docs/running-calculations/engineering-concepts/sleeper-retaining-wall-comparing-analysis-methods">
    A comparative analysis of different methods for calculating pile embedment depth for sleeper retaining walls, including BROMS, AS/NZS 4676, and IBC approaches
  </Card>

  <Card title="Understand Soil Conditions in Sleeper Retaining Wall Design" icon="pencil" href="/docs/running-calculations/engineering-concepts/what-are-soil-conditions-sleeper-retaining-wall-design">
    What are Soil Conditions in Sleeper Retaining Wall Design?
  </Card>
</CardGroup>

## Related guides

<CardGroup cols={2}>
  <Card title="US Spread Footings" icon="flag" href="/docs/calculators/us/foundations-and-retaining-walls/foundationsSpreadFootingUSAIBC2024">
    Design spread footings to ACI 318-14
  </Card>

  <Card title="Europe Calculators" icon="world" href="/docs/calculators/eu">
    Eurocode-based design calculators
  </Card>
</CardGroup>