About This Book
The 2015 International Residential Code (IRC 2015) is a model building code published by the International Code Council (ICC) that establishes minimum safety, design, and construction standards for residential buildings.
Scope The IRC 2015 covers detached single-family homes, duplexes, and townhouses up to three stories above grade. It consolidates building, plumbing, mechanical, fuel gas, energy, and electrical requirements into a single document, keeping residential rules separate from the International Building Code (IBC), which governs commercial and multi-family structures.
Key Features - Prescriptive Standards: Provides straightforward rules for footings, framing, roof loads, and egress, eliminating the need for complex engineering calculations on standard builds. - Solar Energy: Added safety, wind resistance, fire classification, and installation guidelines for rooftop photovoltaic panels and solar shingles (Sections R905.16 and R907). - Energy Efficiency: Introduced the Energy Rating Index (ERI) as an alternative compliance path for meeting residential energy efficiency requirements. - Safety & Alarms: Updated regulations covering carbon monoxide alarms, emergency escape windows, and townhouse separation walls.
Adoption The IRC 2015 functions as a baseline document. States and local municipalities adopt it individually, typically adding local amendments to create their official legal building codes.
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