1、 2011 Ohio Mechanical CodeFirst Printing: October 2011ISBN-978-1-60983-201-8COPYRIGHT 2011byINTERNATIONAL CODE COUNCIL, INC.ALL RIGHTS RESERVED. This 2011 Ohio Mechanical Code contains substantial copyrighted material from the 2009 Interna-tional Mechanical Code, which is a copyrighted work owned by
2、 the International Code Council, Inc. Without advance written per-mission from the copyright owner, no part of this book may be reproduced, distributed or transmitted in any form or by any means,including, without limitation, electronic, optical or mechanical means (by way of example and not limitat
3、ion, photocopying orrecording by or in an information storage 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 Cou
4、ncil,” the “International Code Council” logo and the “International Mechanical Code” aretrademarks of the International Code Council, Inc.Cover Design Credits: The publishers would like to acknowledge the assistance of the Capitol Square Review and Advisory Boardand Schooley Caldwell Associates in c
5、ollecting information on the sesquicentennial of the Ohio Statehouse that made the develop-ment of the covers for this code edition possible.PRINTED IN THE U.S.A.1M:dataCODESSTATE CODESOhio2011MechFinal VP0a_copy_Ohio_Mech_2011.vpMonday, October 03, 2011 2:45:43 PMColor profile: Generic CMYK printer
6、 profileComposite Default screenPREFACEIntroductionOhio code users please note that the 2011 Ohio Mechanical Code is based on the 2009 International Mechanical Code (IMC). Inter-nationally, code officials recognize the need for a modern, up-to-date mechanical code addressing the design and installat
7、ion ofmechanical systems through requirements emphasizing performance. The International Mechanical Code, in this 2009 edition, isdesigned to meet these needs through model code regulations that safeguard the public health and safety in all communities, largeand small.This comprehensive mechanical c
8、ode establishes minimum regulations for mechanical systems using prescriptive and perfor-mance-related provisions. It is founded on broad-based principles that make possible the use of new materials and new mechanicaldesigns. This 2009 edition is fully compatible with all the International Codes (“I
9、-Codes”) published by the International CodeCouncil (ICC), including the International Building Code, International Energy Conservation Code, International ExistingBuilding Code, International Fire Code, International Fuel Gas Code, International Plumbing Code, ICC PerformanceCode, International Pri
10、vate Sewage Disposal Code, International Property Maintenance Code, International ResidentialCode, International Urban-Wildland Interface Codeand International Zoning Code.The International Mechanical Code provisions provide many benefits, among which is the model code development process thatoffers
11、 an international forum for mechanical professionals to discuss performance and prescriptive code requirements. This forumprovides an excellent arena to debate proposed revisions. This model code also encourages international consistency in the applica-tion of provisions.DevelopmentThe first edition
12、 of the International Mechanical Code (1996) was the culmination of an effort initiated in 1994 by a developmentcommittee appointed by the ICC and consisting of representatives of the three statutory members of the International Code Councilat that time, including: Building Officials and Code Admini
13、strators International, Inc. (BOCA), International Conference of Build-ing Officials (ICBO) and Southern Building Code Congress International (SBCCI). The intent was to draft a comprehensive set ofregulations for mechanical systems consistent with and inclusive of the scope of the existing model cod
14、es. Technical content of thelatest model codes promulgated by BOCA, ICBO and SBCCI was utilized as the basis for the development. This 2009 edition pres-ents the code as originally issued, with changes approved through the ICC Code Development Process through 2008. A new editionsuch as this is promu
15、lgated every 3 years.This code is founded on principles intended to establish provisions consistent with the scope of a mechanical code that adequatelyprotects public health, safety and welfare; provisions that do not unnecessarily increase construction costs; provisions that do notrestrict the use
16、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.AdoptionSee Section 101 GENERAL. The effective date of this code throughout Ohio is November 1, 2011.Mainten
17、anceThe International Mechanical Code is kept up to date through the review of proposed 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 wh
18、ich all interested and affected parties may participate.The contents of this work are subject 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-
19、ment Department of the International Code Council.While the development procedure of the International Mechanical Code assures the highest degree of care, ICC and ICCs mem-bers and those participating in the development of this code do not accept any liability resulting from compliance or noncomplia
20、ncewith the provisions because ICC and its members do not have the power or authority to police or enforce compliance with the con-tents of this code. Only the governmental body that enacts the code into law has such authority.Text NotationsItalic text indicates where Ohio has modified the ICC model
21、 code text. The word “Deleted” found throughout the 2011 Ohio codetext indicates where Ohio has deleted 2009 ICC model code text.2011 OHIO MECHANICAL CODE iii1M:dataCODESSTATE CODESOhio2011MechFinal VP0b_prelim_Ohio_Mech_2011.vpFriday, July 29, 2011 9:20:27 AMColor profile: Generic CMYK printer prof
22、ileComposite Default screenCoordination between the International Building and Fire CodesBecause the coordination of technical provisions is one of the benefits of adopting the ICC family of model codes, users will find theICC codes to be a very flexible set of model documents. To accomplish this fl
23、exibility some technical provisions are duplicated insome of the model code documents. While the International Codes are provided as a comprehensive set of model codes for the builtenvironment, documents are occasionally adopted as a stand-alone regulation. When one of the model documents is adopted
24、 as thebasis of a stand-alone code, that code should provide a complete package of requirements with enforcement assigned to the entityfor which the adoption is being made.The model codes can also be adopted as a family of complimentary codes. When adopted together there should be no conflict ofany
25、of the technical provisions. When multiple model codes are adopted in a jurisdiction it is important for the adopting authority toevaluate the provisions in each code document and determine how and by which agency(ies) they will be enforced. It is important,therefore, to understand that where techni
26、cal provisions are duplicated in multiple model documents that enforcement duties mustbe clearly assigned by the local adopting jurisdiction. ICC remains committed to providing state-of-the-art model code documentsthat, when adopted locally, will reduce the cost to government of code adoption and en
27、forcement and protect the public health,safety and welfare.iv 2011 OHIO MECHANICAL CODE2M:dataCODESSTATE CODESOhio2011MechFinal VP0b_prelim_Ohio_Mech_2011.vpFriday, July 29, 2011 9:20:27 AMColor profile: Generic CMYK printer profileComposite Default screenTABLE OF CONTENTSCHAPTER 1 SCOPE AND ADMINIS
28、TRATION . . . 1101 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Chapter 1 of the 2011 OBC. . . . . . . . . . . . . . . . . . . . . . . . . 1CHAPTER 2 DEFINITIONS . . . . . . . . . . . . . . . . . . . 39Section201 General . . . . . . . . . . . . . . . . . . . . . . .
29、 . . . . . . . . . . . 39202 General Definitions . . . . . . . . . . . . . . . . . . . . . . . . 39CHAPTER 3 GENERAL REGULATIONS . . . . . . . 51Section301 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51302 Protection of Structure . . . . . . . . . . . . . . . . . . .
30、. . 52303 Equipment and Appliance Location . . . . . . . . . . . 53304 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53305 Piping Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54306 Access and Service Space . . . . . . . . . . . . . . . . . . . 55307 Co
31、ndensate Disposal . . . . . . . . . . . . . . . . . . . . . . . 56308 Clearance Reduction . . . . . . . . . . . . . . . . . . . . . . . 58309 Temperature Control . . . . . . . . . . . . . . . . . . . . . . . 59310 Explosion Control . . . . . . . . . . . . . . . . . . . . . . . . . 59311 Smoke and He
32、at Vents. . . . . . . . . . . . . . . . . . . . . . 59312 Heating and Cooling LoadCalculations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59313 Welding and Brazing . . . . . . . . . . . . . . . . . . . . . . . 59CHAPTER 4 VENTILATION . . . . . . . . . . . . . . . . . . 61Section401 Gene
33、ral . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61402 Natural Ventilation. . . . . . . . . . . . . . . . . . . . . . . . . 61403 Mechanical Ventilation . . . . . . . . . . . . . . . . . . . . . 62404 Enclosed Parking Garages. . . . . . . . . . . . . . . . . . . 67405 Systems
34、Control. . . . . . . . . . . . . . . . . . . . . . . . . . . 67406 Ventilation of Uninhabited Spaces . . . . . . . . . . . . 67CHAPTER 5 EXHAUST SYSTEMS . . . . . . . . . . . . . 69Section501 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69502 Required Systems . . . . .
35、 . . . . . . . . . . . . . . . . . . . . 69503 Motors and Fans . . . . . . . . . . . . . . . . . . . . . . . . . . 76504 Clothes Dryer Exhaust . . . . . . . . . . . . . . . . . . . . . 76505 Domestic Kitchen Exhaust Equipment. . . . . . . . . 78506 Commercial Kitchen Hood VentilationSystem Ducts and
36、 Exhaust Equipment. . . . . . . 78507 Commercial Kitchen Hoods . . . . . . . . . . . . . . . . . 82508 Commercial Kitchen Makeup Air. . . . . . . . . . . . . 84509 Fire Suppression Systems . . . . . . . . . . . . . . . . . . . 85510 Hazardous Exhaust Systems . . . . . . . . . . . . . . . . . 85511 D
37、ust, Stock and Refuse Conveying Systems . . . . 87512 Subslab Soil Exhaust Systems . . . . . . . . . . . . . . . 88513 Smoke Control Systems . . . . . . . . . . . . . . . . . . . . 88514 Energy Recovery Ventilation Systems . . . . . . . . . 92CHAPTER 6 DUCT SYSTEMS . . . . . . . . . . . . . . . . .
38、93Section601 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93602 Plenums . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93603 Duct Construction and Installation. . . . . . . . . . . . 95604 Insulation . . . . . . . . . . . . . . . . . . . . . . . . .
39、. . . . . . . 97605 Air Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97606 Smoke Detection Systems Control . . . . . . . . . . . . 97607 Duct and Transfer Openings . . . . . . . . . . . . . . . . . 98CHAPTER 7 COMBUSTION AIR . . . . . . . . . . . . . 103Section701 General
40、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103CHAPTER 8 CHIMNEYS AND VENTS . . . . . . . . 105Section801 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105802 Vents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106803 Connecto
41、rs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107804 Direct-vent, Integral Ventand Mechanical Draft Systems . . . . . . . . . . . . 108805 Factory-built Chimneys. . . . . . . . . . . . . . . . . . . . 109806 Metal Chimneys. . . . . . . . . . . . . . . . . . . . . . . . . . 110CHAPTE
42、R 9 SPECIFIC APPLIANCES,FIREPLACES AND SOLIDFUEL-BURNING EQUIPMENT . . . 111Section901 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111902 Masonry Fireplaces . . . . . . . . . . . . . . . . . . . . . . . 111903 Factory-built Fireplaces . . . . . . . . . . . . . . . . . .
43、 . 111904 Pellet Fuel-burning Appliances . . . . . . . . . . . . . 111905 Fireplace Stoves and Room Heaters. . . . . . . . . . 111906 Factory-built Barbecue Appliances . . . . . . . . . . 111907 Incinerators and Crematories . . . . . . . . . . . . . . . 1112011 OHIO MECHANICAL CODE v1M:dataCODESSTAT
44、E CODESOhio2011MechFinal VP0c_toc_Ohio_Mech_2011.vpFriday, July 29, 2011 9:20:05 AMColor profile: Generic CMYK printer profileComposite Default screen908 Cooling Towers, EvaporativeCondensers and Fluid Coolers . . . . . . . . . . . . 111909 Vented Wall Furnaces . . . . . . . . . . . . . . . . . . .
45、. . 112910 Floor Furnaces . . . . . . . . . . . . . . . . . . . . . . . . . . . 112911 Duct Furnaces . . . . . . . . . . . . . . . . . . . . . . . . . . . 112912 Infrared Radiant Heaters . . . . . . . . . . . . . . . . . . . 112913 Clothes Dryers . . . . . . . . . . . . . . . . . . . . . . . . . . .
46、 112914 Sauna Heaters . . . . . . . . . . . . . . . . . . . . . . . . . . . 113915 Engine and Gas Turbine-poweredEquipment and Appliances . . . . . . . . . . . . . . . 113916 Pool and Spa Heaters. . . . . . . . . . . . . . . . . . . . . . 113917 Cooking Appliances . . . . . . . . . . . . . . . . . .
47、 . . . . 113918 Forced-air Warm-air Furnaces . . . . . . . . . . . . . . 113919 Conversion Burners . . . . . . . . . . . . . . . . . . . . . . . 114920 Unit Heaters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114921 Vented Room Heaters . . . . . . . . . . . . . . . . . . . . . 115922 K
48、erosene and Oil-fired Stoves . . . . . . . . . . . . . . 115923 Small Ceramic Kilns . . . . . . . . . . . . . . . . . . . . . . 115924 Stationary Fuel Cell Power Systems . . . . . . . . . 115925 Masonry Heaters . . . . . . . . . . . . . . . . . . . . . . . . . 115926 Gaseous Hydrogen Systems . . . .
49、 . . . . . . . . . . . . 115927 Heat Recovery Ventilators. . . . . . . . . . . . . . . . . . 115CHAPTER 10 BOILERS, WATER HEATERSAND PRESSURE VESSELS. . . . . . . 117Section1001 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1171002 Water Heaters. . . . . . . . . . . . . . . . . . . . . . . . . . . . 1171003 Pressure Vessels. . . . . . . . . . . . . . . . . . . . . . . . . . 1171004 Boilers . . . . . . . . . . . . . . . . . . . . . . . . . .
