ICC I-CODE ORC-2013 I-Codes ORC - Residential Code of Ohio.pdf

1、 2013 Residential Code of OhioFirst PrintingISBN 978-1-60983-204-9COPYRIGHT 2012byINTERNATIONAL CODE COUNCIL, INC.ALL RIGHTS RESERVED. This 2013 Residential Code of Ohio is a copyrighted work owned by the International Code Council,Inc. Without advance written permission from the copyright owner, no

2、 part of this book may be reproduced, distributed, or transmit-ted in any form or by any means, including, without limitation, electronic, optical or mechanical means (by way of example and notlimitation, photocopying, or recording by or in an information storage retrieval system). For information o

3、n permission to copymaterial exceeding fair use, please contact: Publications, 4051 West Flossmoor Road, Country Club Hills, IL 60478-5795. Phone1-888-ICC-SAFE (422-7233).Trademarks: “International Code Council,” the “International Code Council” logo and the “International Residential Code” aretrade

4、marks of the International Code Council, Inc.Cover Design Credits: The publishers would like to acknowledge the assistance of Unibilt Industries, Inc. that made the develop-ment of the cover for this code edition possible.PRINTED IN THE U.S.A.1M:dataCODESSTATE CODESOhio2013ResidentialFinal VP0a_copy

5、_Ohio_IRC_2013.vpTuesday, October 16, 2012 1:33:27 PMColor profile: Generic CMYK printer profileComposite Default screenPREFACEIntroductionInternationally, code officials recognize the need for a modern, up-to-date residential code addressing the design and constructionof one- and two-family dwellin

6、gs and townhouses. The International Residential Code, in this 2009 edition, is designed to meetthese needs through model code regulations that safeguard the public health and safety in all communities, large and small.This comprehensive, stand-alone residential code establishes minimum regulations

7、for one- and two-family dwellings and town-houses using prescriptive provisions. It is founded on broad-based principles that make possible the use of new materials and newbuilding designs. This 2009 edition is fully compatible with all the International Codes(I-Codes) published by the International

8、Code Council(ICC), including the International Building Code, International Energy Conservation Code, InternationalExisting Building Code, International Fire Code, International Fuel Gas Code, International Mechanical Code, ICC Perfor-mance Code, International Plumbing Code, International Private Se

9、wage Disposal Code, International Property MaintenanceCode, International Wildland-Urban Interface Codeand International Zoning Code.The International Residential Code provisions provide many benefits, among which is the model code development process thatoffers an international forum for residentia

10、l construction professionals to discuss prescriptive code requirements. This forum pro-vides an excellent arena to debate proposed revisions. This model code also encourages international consistency in the applicationof provisions.DevelopmentThe first edition of the International Residential Code (

11、2000) was the culmination of an effort initiated in 1996 by ICC and consist-ing of representatives from the three statutory members of the International Code Council at the time, including: Building Officialsand Code Administrators International, Inc. (BOCA), International Conference of Building Off

12、icials (ICBO) and Southern Build-ing Code Congress International (SBCCI), and representatives from the National Association of Home Builders (NAHB). Theintent was to draft a stand-alone residential code consistent with and inclusive of the scope of the existing model codes. Technicalcontent of the 1

13、998 International One- and Two-Family Dwelling Code and the latest model codes promulgated by BOCA, ICBO,SBCCI and ICC was used as the basis for the development, followed by public hearings in 1998 and 1999 to consider proposedchanges. This 2009 edition represents the code as originally issued, with

14、 changes reflected in the 2006 edition, and further changesdeveloped through the ICC Code Development Process through 2008. Residential electrical provisions are based on the 2008National Electrical Code(NFPA 70). A new edition such as this is promulgated every three years.Fuel gas provisions have b

15、een included through an agreement with the American Gas Association (AGA). Electrical provisionshave been included through an agreement with the National Fire Protection Association (NFPA).This code is founded on principles intended to establish provisions consistent with the scope of a residential

16、code that adequatelyprotects public health, safety and welfare; provisions that do not unnecessarily increase construction costs; provisions that do notrestrict the use of new materials, products or methods of construction; and provisions that do not give preferential treatment to par-ticular types

17、or classes of materials, products or methods of construction.AdoptionThe International Residential Code is available for adoption and use by jurisdictions internationally. Its use within a governmentaljurisdiction is intended to be accomplished through adoption by reference in accordance with procee

18、dings establishing the jurisdic-tions laws. At the time of adoption, jurisdictions should insert the appropriate information in provisions requiring specific localinformation, such as the name of the adopting jurisdiction. These locations are shown in bracketed words in small capital letters inthe c

19、ode and in the sample ordinance. The sample adoption ordinance on page xiii addresses several key elements of a code adoptionordinance, including the information required for insertion into the code text.MaintenanceThe International Residential Code is kept up-to-date through the review of proposed

20、changes submitted by code enforcing offi-cials, industry representatives, design professionals and other interested parties. Proposed changes are carefully considered throughan open code development process in which all interested and affected parties may participate.The contents of this work are su

21、bject to change both through the Code Development Cycles and the governmental body thatenacts the code into law. For more information regarding the code development process, contact the Code and Standard Develop-ment Department of the International Code Council.The maintenance process for the fuel g

22、as provisions is based upon the process used to maintain the International Fuel Gas Code,in conjunction with the American Gas Association. The maintenance process for the electrical provisions is undertaken by theNational Fire Protection Association.2013 RESIDENTIAL CODE OF OHIO iii1M:dataCODESSTATE

23、 CODESOhio2013ResidentialFinal VP0b_prelim_Ohio_IRC_2013.vpMonday, September 10, 2012 1:44:20 PMColor profile: Generic CMYK printer profileComposite Default screenWhile the development procedure of the International Residential Code assures the highest degree of care, ICC, the foundingmembers of ICC

24、, its members and those participating in the development of this code do not accept any liability resulting from com-pliance or noncompliance with the provisions because ICC and its founding members do not have the power or authority to police orenforce compliance with the contents of this code. Onl

25、y the governmental body that enacts the code into law has such authority.Marginal MarkingsItalicized text indicates Ohio specific language.iv 2013 RESIDENTIAL CODE OF OHIO2M:dataCODESSTATE CODESOhio2013ResidentialFinal VP0b_prelim_Ohio_IRC_2013.vpMonday, September 10, 2012 1:44:20 PMColor profile: G

26、eneric CMYK printer profileComposite Default screenEffective Use of the International Residential CodeThe International Residential Code(IRC) was created to serve as a complete, comprehensive code regulating the construction ofsingle-family houses, two-family houses (duplexes) and buildings consisti

27、ng of three or more townhouse units. All buildings withinthe scope of the IRC are limited to three stories above grade plane. For example, a four-story single-family house would fall withinthe scope of the International Building Code(IBC), not the IRC. The benefits of devoting a separate code to res

28、idential construc-tion include the fact that the user need not navigate through a multitude of code provisions that do not apply to residential construc-tion in order to locate that which is applicable. A separate code also allows for residential and nonresidential code provisions to bedistinct and

29、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 components, fireplaces and chim-neys, thermal insulation, mechanical systems, fuel gas systems, plumbing systems and electrical systems.

30、The IRC is a prescriptive-oriented (specification) code with some examples of performance code language. It has been said thatthe IRC is the complete cookbook for residential construction. Section R301.1, for example, is written in performance language, butstates that the prescriptive requirements o

31、f the code will achieve such performance.It is important to understand that the IRC contains coverage for what is conventional and common in residential constructionpractice. While the IRC will provide all of the needed coverage for most residential construction, it might not address constructionpra

32、ctices and systems that are atypical or rarely encountered in the industry. Sections such as R301.1.3, R301.2.2, R320.1, R322.1,N1101.2, M1301.1, G2401.1, P2601.1 and E3401.2 refer to other codes either as an alternative to the provisions of the IRC or wherethe IRC lacks coverage for a particular ty

33、pe of structure, design, system, appliance or method of construction. In other words, theIRC is meant to be all inclusive for typical residential construction and it relies on other codes only where alternatives are desired orwhere the code lacks coverage for the uncommon aspect of residential const

34、ruction. Of course, the IRC constantly evolves toaddress new technologies and construction practices that were once uncommon, but are now common.The IRC is unique in that much of it, including Chapters 3 through 9 and Chapters 34 through 43, is presented in an ordered for-mat that is consistent with

35、 the normal progression of construction, starting with the design phase and continuing through the finaltrim-out phase. This is consistent with the “cookbook” philosophy of the IRC.The IRC is divided into eight main parts, specifically, Part IAdministration, Part IIDefinitions, Part IIIBuilding Plan

36、ningand Construction, Part IVEnergy Conservation, Part VMechanical, Part VIFuel Gas, Part VIIPlumbing and PartVIIIElectrical.The following provides a brief description of the content of each chapter and appendix of the IRC:Chapter 1 Scope and Administration. This chapter contains provisions for the

37、application, enforcement and administration ofsubsequent requirements of the code. In addition to establishing the scope of the code, Chapter 1 identifies which buildings andstructures come under its purview. Chapter 1 is largely concerned with maintaining “due process of law” in enforcing the build

38、ingcriteria contained in the body of the code. Only through careful observation of the administrative provisions can the building officialreasonably expect to demonstrate that “equal protection under the law” has been provided.Chapter 2 Definitions. Terms defined in the code are listed alphabeticall

39、y in Chapter 2. It is important to note that two chapters havetheir own definitions sections: Chapter 24 for the defined terms that are unique to fuel gas and Chapter 35 containing terms that areapplicable to electrical Chapters 34 through 43. In the case where Chapter 2 and another chapter both def

40、ine the same term differ-ently, the definition found in Chapter 24 and/or 35 is intended to prevail where the term is used in Chapter 24 and/or 35 and the defi-nition contained in Chapter 2 is intended to prevail where the term is used in all other locations in the code. Except where Chapter 24or 35

41、 has a definition that will prevail therein, the definitions in Chapter 2 are applicable throughout the code.Additional definitions regarding skylights that are not listed in Chapter 2 are found in Section R308.6.1.Where understanding a terms definition is key to or necessary for understanding a par

42、ticular code provision, the term is shown initalics where it appears in the code. This is true only for those terms that have a meaning that is unique to the code. In other words, thegenerally understood meaning of a term or phrase might not be sufficient or consistent with the meaning prescribed by

43、 the code;therefore, it is essential that the code-defined meaning be known.Guidance regarding not only tense, gender and plurality of defined terms, but also terms not defined in this code, is provided.Chapter 3 Building Planning. Chapter 3 provides guidelines for a minimum level of structural inte

44、grity, life safety, fire safety andlivability for inhabitants of dwelling units regulated by this code. Chapter 3 is a compilation of the code requirements specific to thebuilding planning sector of the design and construction process. This chapter sets forth code requirements dealing with light, ve

45、nti-lation, sanitation, minimum room size, ceiling height and environmental comfort. Chapter 3 establishes life-safety provisionsincluding limitations on glazing used in hazardous areas, specifications on stairways, use of guards at elevated surfaces and rules formeans of egress. Snow, wind and seis

46、mic design and flood-resistant construction, as well as live and dead loads, are addressed in thischapter.2013 RESIDENTIAL CODE OF OHIO v3M:dataCODESSTATE CODESOhio2013ResidentialFinal VP0b_prelim_Ohio_IRC_2013.vpMonday, September 10, 2012 1:44:20 PMColor profile: Generic CMYK printer profileComposi

47、te Default screenChapter 4 Foundations. Chapter 4 provides the requirements for the design and construction of foundation systems for buildingsregulated by this code. Provisions for seismic load, flood load and frost protection are contained in this chapter. A foundation systemconsists of two interd

48、ependent components: the foundation structure itself and the supporting soil.The prescriptive provisions of this chapter provide requirements for constructing footings and walls for foundations of wood,masonry, concrete and precast concrete. In addition to a foundations ability to support the requir

49、ed design loads, this chapteraddresses several other factors that can affect foundation performance. These include controlling surface water and subsurfacedrainage, requiring soil tests where conditions warrant and evaluating proximity to slopes and minimum depth requirements. Thechapter also provides requirements to minimize adverse effects of moisture, decay and pests in basements and crawl spaces.Chapter 5 Floors. Chapter 5 provides the requireme