ICC I-CODE IRC-2015 I-Codes IRC - International Residential Code for One and Two-Family Dwellings (Second Printing January 2016).pdf

1、 2015 IRCnullINTERNATIONALResidential CodeFOR ONE- AND TWO-FAMILY DWELLINGSCODE ALERT!Sign up now to receive critical code updates and free access to videos, book excerpts and training resources.Signup is easy, subscribe now! www.iccsafe.org/alerts2015 International Residential CodeFirst Printing: M

2、ay 2014ISBN: 978-1-60983-470-8 (soft-cover edition)ISBN: 978-1-60983-469-2 (loose-leaf edition)COPYRIGHT 2014byINTERNATIONAL CODE COUNCIL, INC.Date of First Publication: May 30, 2014ALL RIGHTS RESERVED. This 2015 International Residential Codeis a copyrighted work owned by the International CodeCoun

3、cil, Inc. Without advance written permission from the copyright owner, no part of this book may be reproduced, distributedor transmitted in any form or by any means, including, without limitation, electronic, optical or mechanical means (by way ofexample, and not limitation, photocopying, or recordi

4、ng by or in an information storage retrieval system). For information onpermission to copy material exceeding fair use, please contact: Publications, 4051 West Flossmoor Road, Country Club Hills, IL60478. Phone 1-888-ICC-SAFE (422-7233).Trademarks: “International Code Council,” the “International Co

5、de Council” logo and the “International Residential Code” aretrademarks of the International Code Council, Inc. 38460-T016046B PRINTED IN THE U.S.A.2015 INTERNATIONAL RESIDENTIAL CODEiiiPREFACEIntroductionInternationally, code officials recognize the need for a modern, up-to-date residential code ad

6、dress-ing the design and construction of one- and two-family dwellings and townhouses. The Interna-tional Residential Code, in this 2015 edition, is designed to meet these needs through model coderegulations that safeguard the public health and safety in all communities, large and small.This compreh

7、ensive, stand-alone residential code establishes minimum regulations for one- andtwo-family dwellings and townhouses using prescriptive provisions. It is founded on broad-basedprinciples that make possible the use of new materials and new building designs. This 2015 editionis fully compatible with a

8、ll of the International Codes(I-Codes) published by the InternationalCode Council(ICC), including the International Building Code, International Energy ConservationCode, International Existing Building Code, International Fire Code, International Fuel Gas Code,International Green Construction CodeIn

9、ternational Mechanical Code, ICC Performance Code,International Plumbing Code, International Private Sewage Disposal Code, International PropertyMaintenance Code, International Swimming Pool and Spa Code, International Wildland-UrbanInterface Codeand International Zoning Code.The International Resid

10、ential Code provisions provide many benefits, among which is the modelcode development process that offers an international forum for residential construction profes-sionals to discuss prescriptive code requirements. This forum provides an excellent arena to debateproposed revisions. This model code

11、 also encourages international consistency in the application ofprovisions.DevelopmentThe first edition of the International Residential Code (2000) was the culmination of an effort initi-ated in 1996 by a developement committee appointed by ICC and consisting of representativesfrom the three statut

12、ory members of the International Code Council at the time, including: BuildingOfficials and Code Administrators International, Inc. (BOCA), International Conference of BuildingOfficials (ICBO) and Southern Building Code Congress International (SBCCI), and representativesfrom the National Association

13、 of Home Builders (NAHB). The intent was to draft a stand-alone resi-dential code consistent with and inclusive of the scope of the existing model codes. Technical con-tent of the 1998 International One- and Two-Family Dwelling Code and the latest model codespromulgated by BOCA, ICBO, SBCCI and ICC

14、was used as the basis for the development, followed bypublic hearings in 1998 and 1999 to consider proposed changes. This 2015 edition represents thecode as originally issued, with changes reflected in the 2009 through 2012 editions, and furtherchanges developed through the ICC Code Development Proc

15、ess through 2013. Residential electricalprovisions are based on the 2014 National Electrical Code(NFPA 70). A new edition such as this ispromulgated every three years.Energy provisions in Chapter 11 are duplicated from the International Energy ConservationCodeResidential Provisions applicable to res

16、idential buildings which fall under the scope of thiscode.Fuel gas provisions have been included through an agreement with the American Gas Associa-tion (AGA). Electrical provisions have been included through an agreement with the National FireProtection Association (NFPA).This code is founded on pr

17、inciples intended to establish provisions consistent with the scope of aresidential code that adequately protects public health, safety and welfare; provisions that do notunnecessarily increase construction costs; provisions that do not restrict the use of new materials,products or methods of constr

18、uction; and provisions that do not give preferential treatment to par-ticular types or classes of materials, products or methods of construction.iv 2015 INTERNATIONAL RESIDENTIAL CODEAdoptionThe International Code Council maintains a copyright in all of its codes and standards. Maintainingcopyright

19、allows ICC to fund its mission through sales of books, in both print and electronic formats.The International Residential Code is designed for adoption and use by jurisdictions that recognizeand acknowledge the ICCs copyright in the code, and further acknowledge the substantial sharedvalue of the pu

20、blic/private partnership for code development between jurisdictions and the ICC.The ICC also recognizes the need for jurisdictions to make laws available to the public. All ICCcodes and ICC standards, along with the laws of many jurisdictions, are available for free in a non-downloadable form on the

21、 ICCs website. Jurisdictions should contact the ICC at adoptionsicc-safe.org to learn how to adopt and distribute laws based on the International Residential Code in amanner that provides necessary access, while maintaining the ICCs copyright.MaintenanceThe International Residential Code is kept up-

22、to-date through the review of proposed changes sub-mitted by code enforcing officials, industry representatives, design professionals and other inter-ested parties. Proposed changes are carefully considered through an open code developmentprocess in which all interested and affected parties may part

23、icipate.The contents of this work are subject to change both through the code development cycles andthe governmental body that enacts the code into law. For more information regarding the codedevelopment process, contact the Codes and Standards Development Department of the Interna-tional Code Counc

24、il.The maintenance process for the fuel gas provisions is based upon the process used to maintainthe International Fuel Gas Code, in conjunction with the American Gas Association. The mainte-nance process for the electrical provisions is undertaken by the National Fire Protection Association.While t

25、he development procedure of the International Residential Code ensures the highestdegree of care, ICC, the founding members of ICC, its members and those participating in the devel-opment of this code do not accept any liability resulting from compliance or noncompliance withthe provisions because I

26、CC and its founding members do not have the power or authority to policeor enforce compliance with the contents of this code. Only the governmental body that enacts thecode into law has such authority.Code Development Committee ResponsibilitiesIn each code development cycle, proposed changes to the

27、code are considered at the CommitteeAction Hearings by the applicable International Code Development Committee as follows:RB = IRCBuilding Code Development CommitteeRE = Residential Energy Code Development CommitteeRMP = IRCMechanical/Plumbing Code Development CommitteeThe RE committee is also respo

28、nsible for the IECCResidential Provisions.2015 INTERNATIONAL RESIDENTIAL CODEvFor the development of the 2018 edition of the I-Codes, there will be three groups of code devel-opment committees and they will meet in separate years. Note that these are tentative groups.Note: Proposed changes to the IC

29、C Performance Code will be heard by the code development committee noted in brackets in the text of the code.Code change proposals submitted to Chapters 1 and 3 through 10, Appendices E, F, H, J, K, L, M,O, R, S, T, U and Definitions designated RB of the International Residential Code are heard by t

30、heIRCBuilding Committee during the Group B (2016) cycle code development hearing. Proposedchanges to all other chapters are heard by the IRC Plumbing and Mechanical Committee during theGroup A (2015) code development cycle. It is very important that anyone submitting code change proposals understand

31、 which code devel-opment committee is responsible for the section of the code that is the subject of the code changeproposal. For further information on the code development committee responsibilities, please visitthe ICC web site at www.iccsafe.org/scoping.Group A Codes(Heard in 2015, Code Change P

32、roposals Deadline: January 12, 2015)Group B Codes(Heard in 2016, Code Change ProposalsDeadline: January 11, 2016)Group C Codes(Heard in 2017, Code Change ProposalsDeadline: January 11, 2017)International Building Code Fire Safety (Chapters 7, 8, 9, 14, 26) Means of Egress(Chapters 10, 11, Appendix E

33、) General (Chapters 2-6, 12, 27-33,Appendices A, B, C, D, K)Administrative Provisions (Chapter 1 all codes except the IRC and IECC, adminis-trative updates to currently referenced standards, and designated definitions)International Green Construction CodeInternational Fuel Gas CodeInternational Buil

34、ding Code Structural (Chapters 15-25, Appendices F, G,H, I, J, L, M)International Existing Building Code International Energy Conservation CodeInternational Mechanical Code International Fire CodeInternational Plumbing CodeInternational Residential Code IRC-Building (Chapters 1, 3-10,Appendices E, F

35、, H, J, K, L, M,O, R, S, T, U)International Private Sewage Disposal CodeInternational Wildland-Urban InterfaceCodeInternational Property MaintenanceCodeInternational Residential Code IRC-Mechanical (Chapters 12-24) IRC-Plumbing (Chapters 25-33, Appendices G, I, N, P)International Swimming Pool and S

36、paCodeInternational Zoning Codevi 2015 INTERNATIONAL RESIDENTIAL CODEMarginal MarkingsSolid vertical lines in the margins within the body of the code indicate a technical change from therequirements of the 2012 edition. Deletion indicators in the form of an arrow ( ) are provided inthe margin where

37、an entire section, paragraph, exception or table has been deleted or an item in alist of items or a table has been deleted.A single asterisk * placed in the margin indicates that text or a table has been relocated withinthe code. A double asterisk * placed in the margin indicates that the text or ta

38、ble immediatelyfollowing it has been relocated there from elsewhere in the code. The following table indicates suchrelocations in the 2015 edition of the International Residential Code.Italicized TermsSelected terms set forth in Chapter 2, Definitions, are italicized where they appear in code text.S

39、uch terms are not italicized where the definition set forth in Chapter 2 does not impart theintended meaning in the use of the term. The terms selected have definitions that the user shouldread carefully to better understand the code.2015 LOCATION 2012 LOCATIONR302.13 R501.3R403.1.3.4 R403.1.4.2R404

40、.1.1 R404.1.3R502.2.2 R502.1.2Tables R602.7(1) and (2) Tables R502.5(1) and (2)P2902.3.7 P2905.4.12015 INTERNATIONAL RESIDENTIAL CODEviiEFFECTIVE USE OF THEINTERNATIONAL RESIDENTIAL CODEEffective Use of the International Residential CodeThe International Residential Code(IRC) was created to serve as

41、 a complete, comprehensive coderegulating the construction of single-family houses, two-family houses (duplexes) and buildings con-sisting of three or more townhouse units. All buildings within the scope of the IRC are limited tothree stories above grade plane. For example, a four-story single-famil

42、y house would fall within thescope of the International Building Code(IBC), not the IRC. The benefits of devoting a separatecode to residential construction include the fact that the user need not navigate through a multi-tude of code provisions that do not apply to residential construction in order

43、 to locate that which isapplicable. A separate code also allows for residential and nonresidential code provisions to be dis-tinct and tailored to the structures that fall within the appropriate codes scopes.The IRC contains coverage for all components of a house or townhouse, including structural c

44、om-ponents, fireplaces and chimneys, thermal insulation, mechanical systems, fuel gas systems, plumb-ing systems and electrical systems.The IRC is a prescriptive-oriented (specification) code with some examples of performance codelanguage. It has been said that the IRC is the complete cookbook for r

45、esidential construction. Sec-tion R301.1, for example, is written in performance language, but states that the prescriptiverequirements of the code will achieve such performance.It is important to understand that the IRC contains coverage for what is conventional and com-mon in residential construct

46、ion practice. While the IRC will provide all of the needed coverage formost residential construction, it might not address construction practices and systems that areatypical or rarely encountered in the industry. Sections such as R301.1.3, R301.2.2.1.1, R320.1,M1301.1, G2401.1 and P2601.1 refer to

47、other codes either as an alternative to the provisions of theIRC or where the IRC lacks coverage for a particular type of structure, design, system, appliance ormethod of construction. In other words, the IRC is meant to be all inclusive for typical residentialconstruction and it relies on other cod

48、es only where alternatives are desired or where the codelacks coverage for the uncommon aspect of residential construction. Of course, the IRC constantlyevolves to address new technologies and construction practices that were once uncommon, butnow common.The IRC is unique in that much of it, includi

49、ng Chapters 3 through 9 and Chapters 34 through 43,is presented in an ordered format that is consistent with the normal progression of construction,starting with the design phase and continuing through the final trim-out phase. This is consistentwith the “cookbook” philosophy of the IRC.The IRC is divided into eight main parts, specifically, Part IAdministration, Part IIDefinitions,Part IIIBuilding Planning and Construction, Part IVEnergy Con