Reference
Standards & Citations
Every risertools calculator is anchored to a verifiable source.
How risertools cites standards
Every calculation on risertools cites the source behind it. Sources are colour-coded by trust tier: published industry standards rank highest, then manufacturer-published vendor curves, then transparent first-party risertools consensus values used only where no single public standard exists. The legend below shows each tier.
- Standards
- Published industry standards — BICSI, TIA, NEC, NFPA, AVIXA, IEEE.
- Vendor curve
- Manufacturer-published data — a lower trust tier than standards; verify against your AHJ.
- First-party risertools curve
- risertools-derived consensus values where no single public standard exists.
AHJ-specific code references and internal editorial notes use neutral, subtle styling.