Home›Knowledge›IBC Chapter 22 — Steel

📋 Codecodessteel

IBC Chapter 22 — Steel

Updated Mar 25, 2026

Structural steel design requirements referencing AISC 360 for structural steel, AISI S100 for cold-formed steel, and SJI for steel joists.

Section 2201: General — structural steel per AISC 360, cold-formed steel per AISI S100, steel joists per SJI standards. Section 2203: Identification and protection — steel members marked per ASTM standards. Painting and fire protection per Chapters 6 and 7. Section 2204: Connections — per AISC 360. Bolted connections: ASTM F3125 high-strength bolts. Welded connections: per AWS D1.1. Section 2205: Structural steel — minimum yield strength A992 (50 ksi) for wide-flange. Section 2206: Cold-formed steel — light-gage framing per AISI S240/S100. Prescriptive design per AISI S230 for residential. Section 2207: Steel joists — manufactured per SJI standards. Open web steel joists for roof and floor framing. Section 2209: Cold-formed steel light-frame construction — per AISI S240 for wall studs, floor joists, roof framing. Minimum 33 ksi yield for structural members. Corrosion protection: G60 or G90 galvanizing.

TAGS

IBC steel AISC-360 cold-formed-steel steel-joists structural

DETAILS

code year

2024

references

["AISC 360-22","AISI S100-16","AWS D1.1"]

code system

IBC

code section

Chapter 22

RELATED KNOWLEDGE

IBC 903.2.1 — Group A Occupancies (Sprinkler Requirements)

Automatic sprinkler system required throughout buildings with Group A occupancy where fire area exceeds 5,000 square feet, or overall building area exceeds 12,000 square feet, or occupant load of the fire area exceeds 300.

IBC 903.2.7 — Group M Occupancies (Retail Sprinkler Requirements)

Automatic sprinkler system required in Group M (mercantile) occupancies where fire area exceeds 12,000 square feet or building is more than three stories above grade.

IBC 903.2.11.3 — Buildings 55 Feet or More in Height

Automatic sprinkler system required throughout buildings with a floor level having an occupant load of 30 or more that is located 55 feet or more above the lowest level of fire department vehicle access.

IBC 1015.1 — Exit and Exit Access Doorways Required

Two exits or exit access doorways required from any space where occupant load exceeds the table values. Spaces with occupant load exceeding 500 require a minimum of 3 exits. Spaces exceeding 1,000 require 4 exits.

IBC 1017.2 — Exit Access Travel Distance

Maximum travel distance from any point in a building to an exit shall not exceed 200 feet unsprinklered or 250 feet sprinklered for most occupancies. Specific occupancies have modified limits.

IBC Table 601 — Fire-Resistance Rating Requirements

Specifies minimum fire-resistance ratings for structural elements based on construction type (Type I through V). Type IA requires 3-hour rated structural frame, 2-hour floors, and 1.5-hour roof.

← Back to Knowledge Garden