1、 2015 IMCnullINTERNATIONALMechanical CodeCODE 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 Mechanical CodeFirst Printing: May 2014ISBN: 978-1-60983-479-1 (sof
2、t-cover edition)ISBN: 978-1-60983-478-4 (loose-leaf edition)COPYRIGHT 2014byINTERNATIONAL CODE COUNCIL, INC.Date of First Publication: May 30, 2014ALL RIGHTS RESERVED. This 2015 International Mechanical Codeis a copyrighted work owned by the International Code Council, Inc. Without advance written p
3、ermission from the copyright owner, no part of this book may be reproduced, distrib-uted, or transmitted in any form or by any means, including, without limitation, electronic, optical or mechanical means (by way of example, and not limitation, photocopying, or recording by or in an information stor
4、age retrieval system). For information on permission to copy material exceeding fair use, please contact: Publications, 4051 West Flossmoor Road, Country Club Hills, IL 60478. Phone 1-888-ICC-SAFE (422-7233).Trademarks: “International Code Council,” the “International Code Council” logo and the “Int
5、ernational Mechanical Code” are trademarks of the International Code Council, Inc.PRINTED IN THE U.S.A.2015 INTERNATIONAL MECHANICAL CODEiiiPREFACEIntroductionInternationally, code officials recognize the need for a modern, up-to-date mechanical codeaddressing the design and installation of mechanic
6、al systems through requirements emphasizingperformance. The International Mechanical Code, in this 2015 edition, is designed to meet theseneeds through model code regulations that safeguard the public health and safety in all communi-ties, large and small.This comprehensive mechanical code establish
7、es minimum regulations for mechanical systemsusing prescriptive and performance-related provisions. It is founded on broad-based principles thatmake possible the use of new materials and new mechanical designs. This 2015 edition is fully com-patible with all of the International Codes (I-Codes) publ
8、ished by the International Code Council(ICC), including the International Building Code, International Energy Conservation Code, Interna-tional Existing Building Code, International Fire Code, International Fuel Gas Code, InternationalGreen Construction Code, International Plumbing Code, ICC Perform
9、ance Code, International Pri-vate Sewage Disposal Code, International Property Maintenance Code, International ResidentialCode, International Swimming Pool and Spa Code, International Urban-Wildland Interface Codeand International Zoning Code.The International Mechanical Code provisions provide many
10、 benefits, among which is the modelcode development process that offers an international forum for mechanical professionals to dis-cuss performance and prescriptive code requirements. This forum provides an excellent arena todebate proposed revisions. This model code also encourages international co
11、nsistency in the appli-cation of provisions.DevelopmentThe first edition of the International Mechanical Code (1996) was the culmination of an effort initi-ated in 1994 by a development committee appointed by the ICC and consisting of representatives ofthe three statutory members of the Internationa
12、l Code Council at that time, including: Building Offi-cials and Code Administrators International, Inc. (BOCA), International Conference of Building Offi-cials (ICBO) and Southern Building Code Congress International (SBCCI). The intent was to draft acomprehensive set of regulations for mechanical s
13、ystems consistent with and inclusive of the scopeof the existing model codes. Technical content of the latest model codes promulgated by BOCA,ICBO and SBCCI was utilized as the basis for the development. This 2015 edition presents the codeas originally issued, with changes approved through the ICC C
14、ode Development Process through2013. A new edition such as this is promulgated every 3 years.This code is founded on principles intended to establish provisions consistent with the scope of amechanical code that adequately protects public health, safety and welfare; provisions that do notunnecessari
15、ly increase construction costs; provisions that do not restrict the use of new materials,products or methods of construction; and provisions that do not give preferential treatment to par-ticular types or classes of materials, products or methods of construction.AdoptionThe International Code Counci
16、l maintains a copyright in all of its codes and standards. Maintainingcopyright allows ICC to fund its mission through sales of books, in both print and electronic formats.The International Mechanical Code is designed for adoption and use by jurisdictions that recognizeand acknowledge the ICCs copyr
17、ight in the code, and further acknowledge the substantial sharedvalue of the public/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
18、of many jurisdictions, are available for free in a non-downloadable form on the ICCs website. Jurisdictions should contact the ICC at adoptionsicc-safe.org to learn how to adopt and distribute laws based on the International Mechanical Code in amanner that provides necessary access, while maintainin
19、g the ICCs copyright.iv 2015 INTERNATIONAL MECHANICAL CODEMaintenanceThe International Mechanical Code is kept up 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
20、carefully considered through an open code developmentprocess in which all interested and affected parties may participate.The contents of this work are subject to change through both the code development cycles andthe governmental body that enacts the code into law. For more information regarding th
21、e codedevelopment process, contact the Codes and Standards Development Department of the Interna-tional Code Council.While the development procedure of the International Mechanical Code ensures the highestdegree of care, the ICC, its members and those participating in the development of this code do
22、 notaccept any liability resulting from compliance or noncompliance with the provisions because the ICCdoes not have the power or authority to police or enforce compliance with the contents of thiscode. Only the governmental body that enacts the code into law has such authority.Code Development Comm
23、ittee Responsibilities(Letter Designations in Front of Section Numbers)In each code development cycle, proposed changes to this code are considered at the CommitteeAction Hearing by the International Mechanical Code Development Committee, whose action con-stitutes a recommendation to the voting memb
24、ership for final action on the proposed change. Pro-posed changes to a code section that has a number beginning with a letter in brackets areconsidered by a different code development committee. For example, proposed changes to codesections that have BG in front of them (e.g., BG 309.1) are consider
25、ed by the IBC General CodeDevelopment Committee at the Committee Action Hearing.The content of sections in this code that begin with a letter designation is maintained by anothercode development committee in accordance with the following:A = Administrative Code Development Committee;BF = IBC Fire Sa
26、fety Code Development Committee;BS = IBC Structural Code Development Committee;BG = IBC General Code Development Committee;E = International Energy Conservation Code Development Committee;F = International Fire Code Development Committee; andFG = International Fuel Gas Code Development Committee.For
27、 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 groupings.2015 INTERNATIONAL MECHANICAL CODEvNote: Proposed changes to the ICC Performance Code will be heard by the cod
28、e development committee noted in brackets in the text of the code.Code change proposals submitted for code sections that have a letter designation in front ofthem will be heard by the respective committee responsible for such code sections. Because differ-ent committees hold code development hearing
29、s in different years, proposals for this code will beheard by committees in both the 2015 (Group A) and the 2016 (Group B) code development cycles.For example, every section of Chapter 1 of this code is designated as the responsibility of theAdministrative Code Development Committee, and that commit
30、tee is part of the Group B codehearings. This committee will conduct its code development hearings in 2016 to consider all codechange proposals for Chapter 1 of this code and proposals for Chapter 1 of all I-Codes except theInternational Energy Conservation Code, the ICC Performance Code and the Int
31、ernational Residen-tial Code. Therefore, any proposals received for Chapter 1 of this code will be deferred for consider-ation in 2016 by the Administrative Code Development Committee.Another example is Section 606.4 of this code which is designated as the responsibility of theInternational Fire Cod
32、e Development Committee. This committee will conduct its code develop-ment hearings in 2016 to consider code change proposals in its purview, which includes any propos-als to Section 606.4.In some cases, another committee in Group A will be responsible for a section of this code. Forexample, Section
33、 607 has a BF in front of the numbered sections, indicating that these sections ofthe code are the responsibility of one of the International Building Code Development Committees.The International Building Code is in Group A; therefore, any code change proposals to this sectionwill be due before the
34、 Group A deadline of January 2015, and these code change proposals will beassigned to the appropriate International Building Code Development Committee for consideration.It is very important that anyone submitting code change proposals understand which code devel-opment committee is responsible for
35、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 website at www.iccsafe.org/scoping.Group A Codes(Heard in 2015, Code Change Proposals Deadline: January 12, 2015)Group B Codes(Heard
36、 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) General (Chapters 2-6, 12, 27-33,Appendices A, B, C,
37、D, K)Administrative Provisions (Chapter 1 ofall codes except IRC and IECC, adminis-trative updates to currently referencedstandards, and designated definitions)International Green Construction CodeInternational Fuel Gas CodeInternational Building Code Structural (Chapters 15-25, Appendices F, G,H, I
38、, J, L, M)International Existing Building Code International Energy Conservation CodeInternational Mechanical Code International Fire CodeInternational Plumbing CodeInternational Residential Code IRC-B (Chapters 1-10, Appendices E,F, H, J, K, L, M, O, R, S, T, U)International Private Sewage Disposal
39、 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 SpaCodeInternational Zoning Codevi 2015 INTERNATIONAL MECHANICAL COD
40、EMarginal 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 an entire section, paragraph, exception or table has been deleted or
41、 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 table immediatelyfollowing it has been relocated there from elsewhere
42、in the code. The following table indicates suchrelocations in the 2015 edition of the International Mechanical Code.Italicized TermsSelected terms set forth in Chapter 2, Definitions, are italicized where they appear in code text.Such terms are not italicized where the definition set forth in Chapte
43、r 2 does not impart theintended meaning in the use of the term. The terms selected have definitions that the user shouldread carefully to facilitate better understanding of the code.2015 LOCATION 2012 LOCATIONNone Nonea1722015 INTERNATIONAL MECHANICAL CODEviiEFFECTIVE USE OF THE INTERNATIONAL MECHAN
44、ICAL CODEThe International Mechanical Code(IMC) is a model code that regulates the design and installa-tion of mechanical systems, appliances, appliance venting, duct and ventilation systems, combus-tion air provisions, hydronic systems and solar systems. The purpose of the code is to establish them
45、inimum acceptable level of safety and to protect life and property from the potential dangersassociated with the installation and operation of mechanical systems. The code also protects thepersonnel that install, maintain, service and replace the systems and appliances addressed by thiscode.The IMC
46、is primarily a prescriptive code with some performance text. The code relies heavily onproduct specifications and listings to provide much of the appliance and equipment installationrequirements. The general Section 105.2 and the exception to Section 403.2 allow designs andinstallations to be perfor
47、med by approved engineering methods as alternatives to the prescriptivemethods in the code.The format of the IMC allows each chapter to be devoted to a particular subject with the excep-tion of Chapter 3, which contains general subject matters that are not extensive enough to warranttheir own indepe
48、ndent chapter.Chapter 1 Scope and Administration. Chapter 1 establishes the limits of applicability of thecode and describes how the code is to be applied and enforced. A mechanical code, like any othercode, is intended to be adopted as a legally enforceable document and it cannot be effective with-
49、out adequate provisions for its administration and enforcement. The provisions of Chapter 1 estab-lish the authority and duties of the code official appointed by the jurisdiction having authority andalso establish the rights and privileges of the design professional, contractor and property owner.Chapter 2 Definitions. Chapter 2 is the repository of the definitions of terms used in the body ofthe code. Codes are technical documents and every
