2006 IBC Guide to SCS - Dr. Klote and Doug Evans

A Guide to Smoke Control in the 2006 IBC

ISBN: 978-1-58001-659-9 Cover Design: Cover Art Director: Publications Manager: Illustrator/Interior Design: Manager of Development:

Duane Acoba Dianna Hallmark Mary Lou Luif Dr. Klote Beth Tubbs

COPYRIGHT 2007

INTERNATIONAL

CODE COUNCir' "Cover photo courtesy of The Forum Shops at Caesars Palace, Las Vegas"

ALL RIGHTS RESERVED. This publication is a copyrighted work owned by the International Code Council. Without advance written permission 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 limitation, photocopying, or recording by or in an information storage and retrieval system). For information on permission to copy material exceeding fair use, please contact: ICC Publications, 4051 W. Flossmoor Rd, Country Club Hills, IL 60478, Phone 888-ICC-SAFE (422-7233).

The information contained in this document is believed to be accurate; however, it is being provided for informational purposes only and is intended for use only as a guide. Publication of this document by the ICC should not be construed as the ICC engaging in or rendering engineering, legal or other professional services. Use of the information contained in this workbook should not be considered by the user as a substitute for the advice of a registered professional engineer, attorney or other professional. If such advice is required, it should be sought through the services of a registered professional engineer, licensed attorney or other professional.

Trademarks: "International Code Council" and the "ICC" logo are trademarks of International Code Council, Inc. First Printing: December 2007

Printed in the United States of America

3·1

Chapter 3 CODE-MANDATED SMOKE BARRIERS

This chapter provides guidance regarding code-required separations that are expected to serve as passive smoke barriers. The way to think about required smoke barriers is whether the code intends to prevent smoke o~ginating in one area/space from migrating across a specific building element: There are many passive barriers that may be used to delineate smoke zones. Keep in mind that a fire-rated assembly does not assure the assembly is constructed to restrict smoke migration. SeveraliBC sections address fire-resistance-rated separations that are also intended to act as smoke barriers (see Figure 3. 1). Designating smoke zones/smoke barriers is a coordinated effort between the appropriate design team members. This may include the architect, mechanical engineer and fire protection engineer. Smoke zones must also be coordinated with fire alarm initiating devices that activate mechanical smoke control systems. This can include not only smoke detectors, but also water flow indicators for automatic sprinkler systems. Smoke zones should be shown on the architectural, mechanical, fire alarm and automatic sprinkler drawings, as well as control diagrams where applicable. Smoke barrier construction is required to meet the provisions outlined in Section 709 and associated referenced sections: SECTION 709 SMOKE BARRIERS 709.1 General Smoke barriers shall comply with this section. 709.2 Materials. Smoke barriers shall be of materials permitted by the building type of construction. 709.3 Fire-resistance rating. A ! -hour fire-resistance rating is required fur smoke barriers. Exception: Smoke barriers constructed of minimum 0. 10-inch-thick (2.5 rom) steel in Group 1-3 buildings. One-hour fire-resistance ratings are one of the least fire-resistive wall and floor/roof-ceiling assemblies available (opening protectives are available that have lower fire-protection ratings).

A GUIDE TO SMOKE CONTROL IN TH E 2006 IBC

3-2

CODE-MANDATED SMOKE BARRIERS

~------------------------------------------------~~~-~~

Figure 3.1 Code-mandated smoke barriers

R-1 floor with pass doors

Office floor

sym blos:

r--