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International Fuel and Gas Code Companion combines a clear, conversational explanation of this complicated Code with the latest tactics and techniques for applying the Code standards on the job. Working closely with the International Code Council, Master Gasfitter and bestselling author R. Dodge Woodson provides easy-to-understand interpretations of the Code that will enable you to achieve full Code compliance-quickly and easily.

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  • INTERNATIONALFUEL GAS CODE

    COMPANION:INTERPRETATION,

    TACTICS, AND TECHNIQUES

  • About the Author

    R. Dodge Woodson is a seasoned builder of as many as 60 single-family homes a year, a master remodeler, a master plumber, and a master gasfitter with over 30years of experience. He opened his first business in 1979 and is now the owner ofThe Masters Group, Inc., in Brunswick, Maine. In addition to operating this con-tracting company, Mr. Woodson has taught both code and apprentice classes inthe technical college system in Maine. Well known as a prolific author of manyMcGraw-Hill titles, his reputation and experience come together to offer readersa real-life view of professional practices.

    Copyright 2008 by The McGraw-Hill Companies, Inc. Click here for terms of use.

  • INTERNATIONALFUEL GAS CODE

    COMPANION:INTERPRETATION,

    TACTICS, ANDTECHNIQUES

    R. Dodge Woodson

    New York Chicago San Francisco Lisbon London MadridMexico City Milan New Delhi San Juan Seoul

    Singapore Sydney Toronto

  • Copyright 2008 by The McGraw-Hill Companies, Inc. All rights reserved. Manufactured in theUnited States of America. Except as permitted under the United States Copyright Act of 1976, no partof 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 publisher.

    0-07-159625-9

    The material in this eBook also appears in the print version of this title: 0-07-149896-6.

    All trademarks are trademarks of their respective owners. Rather than put a trademark symbol afterevery occurrence of a trademarked name, we use names in an editorial fashion only, and to the benefit of the trademark owner, with no intention of infringement of the trademark. Where such designations appear in this book, they have been printed with initial caps.

    McGraw-Hill eBooks are available at special quantity discounts to use as premiums and sales promotions, or for use in corporate training programs. For more information, please contact GeorgeHoare, Special Sales, at george_hoare@mcgraw-hill.com or (212) 904-4069.

    TERMS OF USE

    This is a copyrighted work and The McGraw-Hill Companies, Inc. (McGraw-Hill) and its licensorsreserve all rights in and to the work. Use of this work is subject to these terms. Except as permittedunder the Copyright Act of 1976 and the right to store and retrieve one copy of the work, you may notdecompile, disassemble, reverse engineer, reproduce, modify, create derivative works based upon,transmit, distribute, disseminate, sell, publish or sublicense the work or any part of it withoutMcGraw-Hills prior consent. You may use the work for your own noncommercial and personal use;any other use of the work is strictly prohibited. Your right to use the work may be terminated if youfail to comply with these terms.

    THE WORK IS PROVIDED AS IS. McGRAW-HILL AND ITS LICENSORS MAKE NO GUARANTEES OR WARRANTIES AS TO THE ACCURACY, ADEQUACY OR COMPLETE-NESS OF OR RESULTS TO BE OBTAINED FROM USING THE WORK, INCLUDING ANYINFORMATION THAT CAN BE ACCESSED THROUGH THE WORK VIA HYPERLINK OROTHERWISE, AND EXPRESSLY DISCLAIM ANY WARRANTY, EXPRESS OR IMPLIED,INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY ORFITNESS FOR A PARTICULAR PURPOSE. McGraw-Hill and its licensors do not warrant or guar-antee that the functions contained in the work will meet your requirements or that its operation willbe uninterrupted or error free. Neither McGraw-Hill nor its licensors shall be liable to you or anyoneelse for any inaccuracy, error or omission, regardless of cause, in the work or for any damages resulting therefrom. McGraw-Hill has no responsibility for the content of any information accessedthrough the work. Under no circumstances shall McGraw-Hill and/or its licensors be liable for anyindirect, incidental, special, punitive, consequential or similar damages that result from the use of orinability to use the work, even if any of them has been advised of the possibility of such damages.This limitation of liability shall apply to any claim or cause whatsoever whether such claim or causearises in contract, tort or otherwise.

    DOI: 10.1036/0071498966

  • This book is dedicated toAdam and Afton,

    the two brightest stars in my life.Leona, Sadie, Ben, and Megan

    make up the rest of my universe.

  • This page intentionally left blank

  • vii

    CONTENTS

    Acknowledgments xvIntroduction xvii

    CHAPTER 1: ADMINISTRATION 1.1

    Piping Systems 1.2Gas Utilization Equipment 1.2Exceptions 1.2Other Fuels 1.4Minimum Standards 1.4Existing Installations 1.4Maintenance 1.5Additions 1.5Change in Occupancy 1.5Historic Designation 1.6Relocated Buildings 1.7Code Officer Appointment 1.7

    Liability 1.7Authority 1.7Rules 1.8Applications and Permits 1.8Entry 1.8Records 1.9

    Approval 1.9Modifications 1.9Alternative Options 1.10Testing 1.10

    Permits 1.10Permit Application 1.11Permit Issuance 1.11Approved Construction Documents 1.11Validity 1.12Expiration 1.12Extensions 1.12Retention of Documents 1.13Working Without a Permit 1.13

    Inspections 1.13Underground Inspections 1.14

    For more information about this title, click here

  • viii INTERNATIONAL FUEL GAS CODE COMPANION

    Rough-In Inspections 1.14Final Inspections 1.14

    Heating Equipment 1.14Prefabricated Construction 1.15

    Follow-up Inspections 1.15Approval 1.16

    Violations 1.16Punishment 1.17Stop-work Order 1.17Unsafe Conditions 1.17Condemned Installations 1.18Disconnection 1.18Reconnection 1.18

    Appeal 1.18Membership of Board of Appeals 1.18Qualifications 1.19Board Organization 1.19

    CHAPTER 2: DEFINITIONS 2.1

    CHAPTER 3: GENERAL REGULATIONS 3.1

    Labeling 3.1Plumbing 3.2Fuel Types 3.2Vibration 3.2Repair 3.2Wind 3.2Flooding 3.2Seismic Resistance 3.3Ducts 3.3Rodents 3.3Structural Safety 3.4Penetrations 3.4Cutting, Notching, and Boring Wood 3.4

    Joists 3.4Studs 3.4Bored Holes 3.5

    Trusses 3.5Steel 3.5

    Structural-steel Framing 3.5Cold-formed Steel Framing 3.5Nonstructural Steel 3.6

    Prohibited Appliance Locations 3.6Outdoor Locations 3.7Pit Locations 3.7Combustion, Ventilation, and Dilution Air 3.8

  • CONTENTS ix

    Makeup Air 3.8Indoor Air 3.8Combined Spaces 3.9Outdoor Combustion Air 3.9Combination Air 3.10Mechanical Combustion-air Supply 3.11Louvers and Grilles 3.11Combustion-air Ducts 3.11Fumes and Gases 3.12

    Installation 3.13Elevation of Ignition Source 3.13Parking Garages 3.14Public Garages 3.14Private Garages 3.14Grade Clearance 3.15Combustible Construction 3.15

    Access and Service 3.15Attic Installations 3.15Under-floor Appliances 3.16Roofs and Elevated Structures 3.17

    Permanent Ladders 3.17Sloped Roofs 3.18Guards 3.18

    Condensate Disposal 3.18Clearance Reduction 3.20

    Air-conditioning Equipment 3.20Furnace Plenums 3.20Supply Ducts 3.21Boilers and Furnaces 3.21

    CHAPTER 4: GAS PIPING INSTALLATIONS 4.1

    Identification 4.1Pipe Sizing 4.2

    Branch Length 4.4Hybrid Pressure 4.4Pressure Drop 4.4Operating Pressure 4.5

    LP Systems 4.5Sizing Tables 4.5

    Piping Materials 4.62Anodeless Risers 4.63

    Workmanship 4.64Threads 4.64Corrosive Action 4.64

    Joints and Fittings 4.65Metallic Fittings 4.65Plastic Pipe Joints 4.66

  • Flanges and Flange Gaskets 4.66Piping-system Installation 4.67

    Pipe Protection 4.67Solid Floors 4.68Above-ground Outdoor Piping 4.68Corrosion 4.69Outside Appliances 4.69Beneath Buildings 4.70Outlet Locations 4.70Plastic-pipe Limitations 4.71Tracers 4.71Changes in Direction 4.71

    Testing 4.72Test Pressure and Duration 4.73

    Servicing a System 4.74Pipe Support 4.74Wet Gas 4.75Shutoff Valves 4.76Flow Controls 4.77Manufactured-home Connections 4.78

    Connector Length 4.78Gas-connector Prohibitions 4.79

    Motor-vehicle Facilities 4.79LP-gas Fuel-dispensing Facilities 4.79Dispensing Devices 4.79Private Fueling 4.80Compressed-natural-gas Fuel-dispensing Facilities 4.80Location Exceptions 4.80Residential Applications 4.81Private Fueling Facilities 4.81Emergency Shutdown 4.82Closed Transfer System 4.82Vent Tube 4.82Air or Oxygen under Pressure 4.83Interconnections 4.83Support Intervals 4.83

    Overpressure Protection 4.83Settings 4.86Unauthorized Operation 4.86Vents 4.87Size 4.87

    CHAPTER 5: CHIMNEYS AND VENTS 5.1

    Single Booster-type Automatic Instantaneous Water Heaters 5.2Requirements of Nonvented Appliances 5.2Residential and Low-heat Appliances 5.3

    Category I Appliances 5.4

    x INTERNATIONAL FUEL GAS CODE COMPANION

  • Existing Chimneys and Vents 5.4Vents 5.5

    Insulation Shields 5.5Protection 5.5

    Venting 5.6Mechanical Draft Systems 5.6Above-ceiling Systems 5.7

    Masonry Chimneys 5.7Chimney Termination 5.8Chimney Sizing Limitations 5.8Chimney Inspections 5.10Liquid-fuel-burning Appliances 5.10Combination Appliances 5.10

    Cleanouts 5.11Combustion Air 5.11Gas Vents 5.12

    Terminating Gas Vents 5.12Vents for Category I Appliances 5.13Offsets 5.13Multistory Buildings 5.14

    Sizing Connectors 5.14Labeling 5.15Single-Wall Pipe 5.15

    Roof Penetration 5.15Installation Rules 5.16Single-wall Pipe Size 5.16

    Venting Termination Locations 5.17Category II and IV Appliances 5.18

    Unconditioned Areas 5.18Residential-type Appliance Connectors 5.18Low-heat Equipment 5.19Medium-heat Equipment 5.19Multiple Draft Hoods 5.20Multiple Appliances 5.21Joints 5.21Connector Length 5.21Chimney Connections 5.22Wall Penetration 5.22Vented Appliances 5.23Draft Hoods 5.24Table Definitions 5.25Venting Tables 5.26

    Minimum Size 5.26Vent Offsets 5.26High Altitudes 5.27Multiple Inputs 5.27Liner Sizing 5.27

    Vent Area and Diameter 5.27Chimney and Vent Locations