MASS TIMBER BUILDINGS AND THE IBC

MASS TIMBER BUILDINGS AND THE IBC?

AMERICAN WOOD COUNCIL

MASS TIMBER BUILDINGS AND THE IBC? 2021 EDITION

International Code Council

ICC Staff: Executive Vice President and Director of Business Development:

Mark A. Johnson

Senior Vice President, Business and Product Development:

Hamid Naderi

Vice President and Technical Director, Products and Services:

Doug Thornburg

Vice President, Publishing and Multimedia: Margi Leddin

Senior Marketing Specialist: Dianna Hallmark

ISBN: 978-1-952468-02-5 Project Head: Publications Manager: Project Editor: Production Technician: Cover Design:

John "Buddy" Showalter, P.E. Anne F. Kerr Phil Arvia Sue Brockman Ricky Razo

COPYRIGHT ? 2020 by INTERNATIONAL CODE COUNCIL, INC., and the AMERICAN WOOD COUNCIL

ALL RIGHTS RESERVED.

This publication is a copyrighted work owned by the International Code Council, Inc. ("ICC"), and the American Wood Council ("AWC"). Without advance written permission from ICC, no part of this publication 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 retrieval system). For information on use rights and permissions, please contact: ICC Publications, 4051 Flossmoor Road, Country Club Hills, IL 60478. Phone 1-888-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 or the AWC engaging in or rendering engineering, legal or other professional services. Use of the information contained in this book should not be considered by the user to be 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," the "International Code Council" logo, "ICC," the "ICC" logo, "International Building Code," "IBC," and other names and trademarks appearing in this book are registered trademarks of the International Code Council, Inc., and/or its licensors (as applicable), and may not be used without permission from ICC. "National Design Specification" and "NDS" are registered trademarks of the American Wood Council and may not be used without permission from AWC.

Errata on various ICC publications may be available at errata.

Cover photos courtesy of AWC. Unless otherwise noted, all photos are courtesy of AWC, ICC or ATF Fire Research Laboratory.

First Printing: June 2020

PRINTED IN THE USA

T025237

Contents

Introduction

vii PART 2

Building Planning

(Chapters 4, 5 and 6)

13

PART 1

Administration (Chapters 1 and 2)

2021 IBC 1

403.3.2 and 2021 IFC 914.3.1.2

2021 IBC

Water Supply to Required Fire Pumps

14

TABLES 504.3, 504.4 and 506.2

110.3.5

General Building Heights and Areas

16

Types IV-A, IV-B and IV-C Connection Protection

Inspection2 508.4.4.1 and 509.4.1.1

202 Definition of Wall, Load-bearing

Separated Occupancies and Incidental Use

Separations

27

4

602.4

202

Type IV

29

Definition of Mass Timber

5

602.4.1

202

Type IV-A

39

Definition of Noncombustible Protection

(for Mass Timber)

8 602.4.2

202

Type IV-B

44

Definitions of Primary Structural Frame and

602.4.3

Secondary Structural Members

9

Type IV-C

55

2015 IBC

602.4.4

Type IV-HT

58

202

2018 IBC

Definition of Cross-laminated Timber

11 602.4

Type IV

61

2015 IBC

602.4

Type IV

62

iii

ivCONTENTS

PART 3

Fire Protection

(Chapters 7, 8 and 9)

65

2021 IBC

703.6, 703.7, 704.4 and 718.2.1

Fire and Smoke Protection Features

66

722.7

Fire-resistance Rating of Mass Timber

70

803.3 Interior Finishes ? Heavy Timber Exemption 81

Chapter 9

Fire Protection and Life Safety Systems

83

2021 IFC

701.6

Owner's Responsibility

80

2018 IBC

803.3

Heavy Timber Exemption

81

2015 IBC

803.3

Heavy Timber Exemption

81

PART 4

Means of Egress and Elevators

(Chapters 10 and 30)

87

PART 5

Building Envelope, Structural Systems and

Construction Materials

(Chapters 12?17, 23 and 25)

95

2021 IBC

1206

Sound Transmission

97

Chapter 13

Energy

106

Chapter 14

Exterior Walls

116

Chapter 15

Roof Assemblies and Structures

118

Chapter 16

Structural Loads

120

1705

Special Inspections and Tests

125

2304 General Construction Requirements ? Wood 129

Chapter 25

Gypsum Board, Gypsum Panel Products and

Plaster

141

2018 IBC

2304.9.3.2

Nailing

135

2304.11

Heavy Timber Construction

137

2021 IBC

Chapter 10

Means of Egress

88

Chapter 30

Elevators

91

CONTENTSv

PART 6 Special Conditions (Chapters 31 and 33)

PART 7

IBC Referenced Standards

145 and Appendix D

157

2021 IBC

3102 Special Construction ? Membrane Structures 146

2021 IFC

3303.3

Daily Fire Safety Inspection

147

3308.4

Fire Safety Requirements for Buildings of Types

IV-A, IV-B and IV-C Construction

149

3312

Water Supply for Fire Protection

153

2021 IBC

Chapter 35 ANSI/APA PRG 320 ASTM D3498

D102.2.5 Structural Fire Rating

PART 8 Appendices A, B and C

158 160 161

Appendix A Environmental, Economic and Safety Issues 162

Appendix B

Technical Resources

173

Appendix C

Practice Quiz

174

Bibliography

187

Index

191

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