Free PDF · Updated for 2024

Quick Reference: ACI 318 · NEC · ASHRAE

The clauses, limits, and rules of thumb working engineers reach for every day — curated into one printable cheat sheet you can keep on your desk.

  • ACI 318-19 — cover, min steel, dev. length, shear, load combos, φ factors
  • NEC 2023 — branch/feeder sizing, OCPD, GFCI/AFCI, ampacity, working space
  • ASHRAE 90.1 / 62.1 / 55 — efficiency, ventilation Rp/Ra, thermal comfort
  • Voltage-drop, rebar tables, and quick-look references
3 pages · printable letter size
Reference only — verify against the edition adopted by your AHJ.

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