2012 INTERNATIONAL BUILDING CODE …

1 2012 INTERNATIONAL BUILDING code 13/26/13 4:18 PMAbout the AuthorsDouglas W. Thornburg, AIA, is the Vice President and Technical Director of Product Development and Education, where he provides leadership in the technical development and positioning of support products, educational activities, and certification programs for the code Council (ICC). Prior to joining the ICC in 2004, Mr. Thornburg served as a code consultant and educator for BUILDING codes. He has been involved extensively in BUILDING code activities since 1980. John R. Henry, , is the Principal Staff Engineer with the INTERNATIONAL code Council (ICC) and has been with the association since 1997. During his tenure with ICC, he has worked for the code development department, technical services, government relations, training and education, and product development. Mr. Henry is currently responsible for the research, development, and authoring of technical resources related to the structural engineering provisions of the IBC and IRC and is an instructor of structural and framing seminars for the code the INTERNATIONAL code CouncilThe INTERNATIONAL code Council (ICC ) is a member-focused association dedicated to helping the BUILDING safety community and construction industry provide safe, sustainable and affordable construction through the development of codes and standards used in the design, build and compliance process.

2 Most communities and many global markets choose the INTERNATIONAL Codes. ICC Evaluation Service (ICC-ES), a subsidiary of the INTERNATIONAL code Council, has been the industry leader in performing technical evalua-tions for code compliance fostering safe and sustainable design and : 500 New Jersey Avenue, NW, 6th Floor, Washington, DC 20001-2070 District Offices: Birmingham, AL; Chicago. IL; Los Angeles, CA 23/26/13 4:18 PM2012 INTERNATIONAL BUILDING code handbook Douglas W. Thornburg, AIA|John R. Henry, York Chicago San Francisco Lisbon London Madrid Mexico City Milan New Delhi San Juan Seoul Singapore Sydney 33/26/13 4:18 PMSponsoring EditorMichael McCabe, McGraw-Hill Education (MHE)Acquisitions CoordinatorBridget Thoreson, MHEE ditorial SupervisorDavid E. Fogarty, MHEP roject ManagerHarleen Chopra, Cenveo Publisher ServicesCopy EditorCenveo Publisher ServicesProofreaderPaula GarberProduction SupervisorRichard C.

3 Ruzycka, MHEC ompositionCenveo Publisher ServicesArt Director, CoverJeff Weeks, MHEICC StaffExecutive VP and Director of Business Development Mark JohnsonVP and Technical Director of Product Development and EducationDoug ThornburgDirector of Products and Special sales Suzane NunesManager of Product DevelopmentCindy RodriguezInformation contained in this work has been obtained by McGraw-Hill Education, LLC from sources believed to be reliable. However, neither McGraw-Hill Education, the INTERNATIONAL code Council, nor its authors guarantee the accuracy or completeness of any information published herein, and neither McGraw-Hill Education nor its authors shall be responsible for any errors, omissions, or damages arising out of use of this information. This work is published with the understanding that McGraw-Hill Education and its authors are supplying information but are not attempting to render engineering or other professional services.

4 If such services are required, the assistance of an appropriate professional should be Education and ICC books are available at special quantity discounts to use as pre-miums and sales promotions, or for use in corporate training programs. To contact a representative please e-mail us at INTERNATIONAL BUILDING code HandbookCopyright 2013 by the INTERNATIONAL code Council. All rights reserved. Printed in the United States of America. Except as permitted under the United States Copyright Act of 1976, no part of this publication may be reproduced or distributed in any form or by any means, or stored in a data base or retrieval system, without the prior written permission of the 2 3 4 5 6 7 8 9 0 DOW/DOW 1 9 8 7 6 5 4 3 ISBN 978-0-07-180131-7 MHID 0-07-180131-6 This book is printed on acid-free 43/26/13 4:18 PM2012 INTERNATIONAL BUILDING code HandbookvDedicationThis book is dedicated to the memory of the late James E.

5 Bihr, , past chief execu-tive officer of the INTERNATIONAL Conference of BUILDING Officials (one of the three legacy founding members of the INTERNATIONAL code Council) and past chairman of the board of directors of ASTM INTERNATIONAL (formerly the American Society of Testing and Materials). Mr. Bihr provided tremendous vision and leadership in various roles during his long and distin-guished career. His integrity, professionalism, and compassion provided support and inspiration to the authors as well as so many INTERNATIONAL BUILDING code 53/26/13 4:18 PM2012 INTERNATIONAL BUILDING code HandbookviOnline Bonus Resources Enhance Your 2012 IBC handbook Reading Experience. The 2012 INTERNATIONAL BUILDING code handbook includes a variety of helpful bonus resources just right for you. These online bonus resources are designed to enhance your expertise and knowledge of various BUILDING code provisions, including: FEMA/NEHRP/NIST Publications related to earthquake safety and seismic design Articles by expert engineers on changes to the latest structural material standards ATC Wind Speed site provides site specific wind speeds for use with ASCE 7-10 ICC Guidelines for acoustics and commissioning Helpful Articles from ICC s BUILDING Safety Journal Helpful ICC YouTube Videos on various code related topics Resources related to accessible means of egress and fire 63/26/13 4:18 PM2012 INTERNATIONAL BUILDING code HandbookviiContentsForeword.

6 XvPreface ..xviiAcknowledgments ..xixChapter 1 Scope and Administration ..1 Section 101 General ..2 Section 102 Applicability ..4 Section 103 Department of BUILDING Safety ..5 Section 104 Duties and Powers of BUILDING Official ..6 Section 105 Permits ..9 Section 107 Submittal Documents ..11 Section 108 Temporary Structuresand Uses ..12 Section 109 Fees ..12 Section 110 Inspections ..13 Section 111 Certificate of Occupancy ..14 Section 112 Service Utilities ..15 Section 113 Board of Appeals ..15 Section 114 Violations ..15 Section 115 Stop Work Order ..16 Section 116 Unsafe Structures and Equipment ..17 KEY POINTS ..17 Chapter 2 Definitions ..19 Section 201 General ..20 Section 202 Definitions ..20 KEY POINTS ..45 Chapter 3 Use and Occupancy Classification ..47 Section 302 Classification.

7 48 Section 303 Assembly Group A ..50 Section 304 Business Group B ..54 Section 305 Educational Group E ..55 Section 306 Factory Group F ..56 Section 307 High-Hazard Group H ..57 Section 308 Institutional Group I ..63 Section 309 Mercantile Group M ..65 Section 310 Residential Group R ..66 Section 311 Storage Group S ..68 Section 312 Utility and Miscellaneous Group U ..69 KEY POINTS ..69 Chapter 4 Special Detailed Requirements Based on Use and Occupancy ..71 Section 402 Covered Mall and Open Mall Buildings ..72 Section 403 High-Rise Buildings ..81 Section 404 Atriums ..88 Section 405 Underground Buildings ..90 Section 406 Motor-Vehicle-Related Occupancies ..92 Section 407 Group I-2 ..96 Section 408 Group I-3 ..100 Section 409 Motion-Picture Projection Rooms ..101 Section 410 Stages, Platforms, andTechnical Production Areas.

8 101 Section 411 Special Amusement Buildings ..104 Section 412 Aircraft-Related Occupancies ..105 Section 413 Combustible Storage ..106 Section 414 Hazardous Materials ..107 Section 415 Groups H-1, H-2, H-3, H-4, and H-5 ..110 Section 416 Application of Flammable Finishes ..114 Section 417 Drying Rooms ..114 Section 418 Organic Coatings ..114 Section 419 Live/Work Units ..115 Section 420 Groups I-1, R-1, R-2, and R-3 ..116 Section 422 Ambulatory Care Facilities ..117 Section 423 Storm Shelters ..119 Section 424 Children s Play Structures ..119 KEY POINTS .. 73/26/13 4:18 PM2012 INTERNATIONAL BUILDING code Handbookviii ContentsChapter 5 General BUILDING Heights and Areas ..123 Section 501 General ..124 Section 503 General BUILDING Height and Area Limitations ..124 Section 504 BUILDING Height.

9 128 Section 505 Mezzanines and Equipment Platforms ..130 Section 506 BUILDING Area Modifications ..135 Section 507 Unlimited-Area Buildings ..148 Section 508 Mixed Use and Occupancy ..155 Section 509 Incidental Uses ..165 Section 510 Special Provisions ..168 KEY POINTS ..172 Chapter 6 Types of Construction ..175 Section 602 Construction Classification ..176 Section 603 Combustible Material in Type I and II Construction ..186 KEY POINTS ..188 Chapter 7 Fire and Smoke Protection Features ..189 Section 703 Fire-Resistance Ratingsand Fire Tests ..190 Section 704 Fire-Resistance Rating of Structural Members ..197 Section 705 Exterior Walls ..201 Section 706 Fire Walls ..215 Section 707 Fire Barriers ..226 Section 708 Fire Partitions ..228 Section 709 Smoke Barriers ..231 Section 710 Smoke Partitions.

10 232 Section 711 Horizontal Assemblies ..232 Section 712 Vertical Openings ..235 Section 713 Shaft Enclosures ..237 Section 714 Penetrations ..241 Section 715 Joint Systems ..249 Section 716 Opening Protectives ..250 Section 717 Ducts and Air Transfer Openings ..255 Section 718 Concealed Spaces ..260 Section 719 Fire-Resistance Requirements for Plaster ..266 Section 720 Thermal- and Sound-Insulating Materials ..266 Section 721 Prescriptive Fire Resistance ..266 Section 722 Calculated Fire Resistance ..270 KEY POINTS ..272 Chapter 8 Interior Finishes ..275 Section 801 General ..276 Section 803 Wall and Ceiling Finishes ..276 Section 804 Interior Floor Finish ..279 Section 805 Combustible Materials in Types I and II Construction ..280 Section 806 Decorative Materials and Trim ..281 KEY POINTS.