Description
2021 International Residential Code for one and two family dwellings
The IRC puts every trade that touches a house into one book. Building, plumbing, mechanical, fuel gas and electrical requirements for one and two family dwellings and townhouses up to three storeys all sit between the same covers, which is why builders, plan reviewers and inspectors keep it on the desk rather than the shelf.
The 2021 edition carries a long list of technical revisions from the International Code Council, several of them structural.
Structural and life safety changes
- Revised structural bracing provisions.
- Fire resistance separation requirements in two family dwellings.
- Stronger requirements for emergency escape and rescue openings.
- Updated storm shelter design criteria, habitable attic limits and residential fire sprinkler provisions.
- Wind design brought in line with current standards, including new wind speed maps and reworked rules for decks, footings and guardrails.
Mechanical, plumbing and electrical
Ventilation allowances change, as do the testing methods for drainage and vent systems. On the electrical side there are new rules for service disconnect accessibility, surge protection devices, and kitchen receptacle spacing worked out from countertop area rather than wall length.
New appendices
This edition adds appendices for construction methods that were not in the code before, among them cob construction and 3D printed buildings.
Who uses it
Residential builders, inspectors and plan reviewers, and students in construction management, civil engineering, architecture and building inspection programmes.
Book details
- Title: 2021 International Residential Code for One and Two Family Dwellings
- Publisher: International Code Council
- Edition: 2021
- ISBN-13: 9781609839574
Questions buyers ask
What buildings does the IRC apply to?
One and two family dwellings and townhouses up to three storeys in height.
Does it cover plumbing and electrical too, or only building?
All of it. Building, plumbing, mechanical, fuel gas and electrical requirements are in this one volume.
What changed from the 2018 edition?
Structural bracing, fire resistance separation in two family dwellings, emergency escape openings, storm shelters, habitable attics, wind design and wind speed maps, plus new electrical rules for surge protection and kitchen receptacles.
Are 3D printed buildings really in the code?
The 2021 edition adds appendices covering emerging methods including cob construction and 3D printed buildings.
Which ISBN is this?
9781609839574, the 2021 IRC from the International Code Council.
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