International Residential Code - Chapter 1, 3 , 34 and Appendix N (AN) Chapter 1: Cargo Containers Used as Accessory Storage Structures -- IRC/1/#2 - 1/29/13 Chapter 1: Four Story Structures Regulated Under the Oregon Residential Specialty Code -- IRC/1/#3 - 5/1/12 (PDF Document, 122kb) Appendix N: Building Projections Into Private Streets -- IBC/7/#7 & IRC/AN/#3 - 7/14/06 Appendix N: Exterior Wall and Opening Protection at Private Streets -- IBC/7/#6 & IRC/AN/#2 - 8/23/07 Chapter 3: Habitable Space Standards for Existing Elements Within One and Two Family Dwellings -- IRC/3/#1 - 01/16/13 (PDF Document, 120kb) Chapter 34: Rainwater Harvesting Systems for Interior Use or Combined Interior and Exterior Use -- IRC/34/#1 - 3/13/01 (PDF Document, 344kb) PDF Information Some of the links on this page are to PDF documents. To open PDF files you will need Adobe Acrobat Reader installed on your computer, it is available for free from Adobe.com.