Guides
Structural engineering standards & guides
Understand the design standards behind our calculators, then pick the tool that matches the code you work to.
Design methods
- LRFD / ASD — Load & Resistance Factor Design and Allowable Strength Design, per AISC 360.
- Limit-state design — ULS/SLS with partial safety factors, per Eurocode 3.
- Strength design — Load factors + strength-reduction factors (φ) for concrete, per ACI 318.
Standard guides
AISC 360
The US steel building specification (LRFD/ASD).
Eurocode 3 (EN 1993)
The European steel design standard + National Annexes.
ACI 318
The reinforced-concrete code for foundations.
AS 4100
The Australian steel design standard (limit state, φ).
CSA S16
The Canadian steel design standard (LSD).
IS 800
The Indian steel design standard (γm0=1.10).
Our calculators
These guides are educational overviews, not case-specific design advice — real design must reference the full standard and be certified by a licensed engineer.
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