2023 Oregon Residential Specialty Code (ORSC)

This is a fully integrated code based on the 2021 International Residential Code. This code does not contain Electrical or Plumbing provisions.

TABLE OF CONTENTS

CHAPTER 1 SCOPE AND ADMINISTRATION . . . . . . . . . . . . . . 1-1

PART 1—SCOPE AND APPLICATION. . . . . . . . . . . 1-1

PART 2—ADMINISTRATION AND ENFORCEMENT. . . . . . . . . . . . . . . . . . . . . 1-5

Part II—Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

CHAPTER 2 DEFINITIONS . . . . . . . . . . . . . . . . . . . 2-1

Part III—Building Planning and Construction . . . . . . . 3-1

CHAPTER 3 BUILDING PLANNING . . . . . . . . . . . 3-1

CHAPTER 4 FOUNDATIONS. . . . . . . . . . . . . . . . . . 4-1

CHAPTER 5 FLOORS . . . . . . . . . . . . . . . . . . . . . . . . 5-1

CHAPTER 6 WALL CONSTRUCTION. . . . . . . . . . 6-1

CHAPTER 7 WALL COVERING . . . . . . . . . . . . . . . 7-1

CHAPTER 8 ROOF-CEILING CONSTRUCTION . . . . . . . . . . . . . . . . 8-1

CHAPTER 9 ROOF ASSEMBLIES . . . . . . . . . . . . . 9-1

CHAPTER 10 CHIMNEYS AND FIREPLACES . . . . . . . . . . . . . . . . . . 10-1

Part IV—Energy Conservation. . . . . . . . . . . . . . . . . . . 11-1

CHAPTER 11 ENERGY EFFICIENCY . . . . . . . . . . 11-1

PART 1—ENERGY CONSERVATION . . . . . . . . . . 11-1

PART 2—ALTERNATIVE SYSTEMS ANALYSIS . . . . . . . . . . . . . . 11-12

PART 3—FENESTRATION STANDARD . . . . . . . 11-13

Part V—Mechanical . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-1

CHAPTER 12 MECHANICAL ADMINISTRATION . . . . . . . . . . . . 12-1

CHAPTER 13 GENERAL MECHANICAL SYSTEM REQUIREMENTS . . . . . 13-1

CHAPTER 14 HEATING AND COOLING EQUIPMENT AND APPLIANCES . . . . . . . . . . . . . . . . . . 14-1

CHAPTER 15 EXHAUST SYSTEMS . . . . . . . . . . . 15-1

CHAPTER 16 DUCT SYSTEMS . . . . . . . . . . . . . . . 16-1

CHAPTER 17 COMBUSTION AIR . . . . . . . . . . . . 17-1

CHAPTER 18 CHIMNEYS AND VENTS . . . . . . . 18-1

CHAPTER 19 SPECIAL APPLIANCES, EQUIPMENT AND SYSTEMS . . . 19-1

CHAPTER 20 BOILERS AND WATER HEATERS . . . . . . . . . . . . . 20-1

CHAPTER 21 HYDRONIC PIPING . . . . . . . . . . . . 21-1

CHAPTER 22 SPECIAL PIPING AND STORAGE SYSTEMS . . . . . . . . . . . 22-1

CHAPTER 23 SOLAR THERMAL ENERGY SYSTEMS . . . . . . . . . . . . 23-1

Part VI—Fuel Gas. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24-1

CHAPTER 24 FUEL GAS. . . . . . . . . . . . . . . . . . . . . 24-1

CHAPTERS 25–33 RESIDENTIAL PLUMBING . . . . . .25-1

CHAPTERS 34–42 RESIDENTIAL ELECTRICAL . . . .34-1

CHAPTER 43 LOW-RISE APARTMENTS . . . . . . 43-1

Part IX—Referenced Standards . . . . . . . . . . . . . . . . . . 44-1

CHAPTER 44 REFERENCED STANDARDS . . . . 44-1

APPENDIX AA SIZING AND CAPACITIES OF GAS PIPING . . . . . . . . . . . . . . AA-1

APPENDIX AB SIZING OF VENTING SYSTEMS SERVING APPLIANCES EQUIPPED WITH DRAFT HOODS, CATEGORY I APPLIANCES, AND APPLIANCES LISTED FOR USE WITH TYPE B VENTS . . . . . . . . AB-1

 APPENDIX AC RESERVED . . . . . . . . . . . . . . . . . . AC-1

APPENDIX AD RECOMMENDED PROCEDURE FOR SAFETY INSPECTION OF AN EXISTING APPLIANCE INSTALLATION. . . . . . . . . . . . . . AD-1

APPENDIX AE MANUFACTURED HOUSING USED AS DWELLINGS. . . . . . . . AE-1

APPENDIX AF RADON CONTROL METHODS. . . . . . . . . . . . . . . . . . . AF-1

APPENDIX AG PIPING STANDARDS FOR VARIOUS APPLICATIONS . . . . AG-1

APPENDIX AH DECK, PATIO OR PORCH COVERS . . . . . . . . . . . . . AH-1

APPENDIX AI PRIVATE SEWAGE DISPOSAL. . . . . . . . . . . . . . . . . . . . AI-1

APPENDIX AJ EXISTING BUILDINGS AND STRUCTURES . . . . . . . . . . .AJ-1

APPENDIX AK SOUND TRANSMISSION . . . . . . AK-1

APPENDIX AL PERMIT FEES . . . . . . . . . . . . . . . AL-1

APPENDIX AM HOME DAY CARE—R-3 OCCUPANCY . . . . . . . . . . . . . . . AM-1

APPENDIX AN VENTING METHODS. . . . . . . . . AN-1

APPENDIX AO AUTOMATIC VEHICULAR GATES . . . . . . . . . AO-1

APPENDIX AP SIZING OF WATER PIPING SYSTEM . . . . . . . . . . . . . .AP-1

APPENDIX AQ TINY HOUSES . . . . . . . . . . . . . . . AQ-1

APPENDIX AR LIGHT STRAW-CLAY CONSTRUCTION . . . . . . . . . . . . AR-1

APPENDIX AS STRAWBALE CONSTRUCTION . . . . . . . . . . . . .AS-1

APPENDIX AT SOLAR-READY PROVISIONS— DETACHED ONE- AND TWO-FAMILY DWELLINGS AND TOWNHOUSES. . . . . . . . . . AT-1

APPENDIX AU COB CONSTRUCTION (MONOLITHIC ADOBE) . . . . . . AU-1

APPENDIX AV BOARD OF APPEALS . . . . . . . . . AV-1

APPENDIX AW 3D-PRINTED BUILDING CONSTRUCTION . . . . . . . . . . . .AW-1

APPENDIX AX ZERO ENERGY RESIDENTIAL BUILDING PROVISIONS. . . . . . . AX-1

INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INDEX-1