2012 Virginia Construction Code

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Transcript of 2012 Virginia Construction Code

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    2012 VIRGINIA CONSTRUCTION CODE i

    PREFACE

    Introduction

    The Virginia Uniform Statewide Building Code (USBC) is a state regulation promulgated by the VirginiaBoard of Housing and Community Development, a Governor-appointed board, for the purpose of estab-lishing minimum regulations to govern the construction and maintenance of buildings and structures.

    The provisions of the USBC are based on nationally recognized model building and fire codes publishedby the International Code Council, Inc. The model codes are made part of the USBC through a regulatoryprocess known as incorporation by reference. The USBC also contains administrative provisions governingthe use of the model codes and establishing requirements for the enforcement of the code by the localbuilding departments and other code enforcement agencies.

    In keeping with the designations of the USBC used previously, since the 2012 editions of the Interna-tional Codes are incorporated by reference into this version of the USBC, it is known as the 2012 edition ofthe USBC.

    ArrangementThe USBC is part of the Virginia Administrative Code (VAC), the official compilation of state regulationspublished under the authority and guidance of the Virginia Code Commission. Due to the difference in the

    section numbering system between the VAC and the model codes incorporated by reference into theUSBC, the UBSC utilizes a dual section numbering system. In the USBC, the VAC section numbers are listedfirst, followed by a section number matching the model code system. In this printing of the USBC, the VACsection numbers are omitted and only the model code numbering system is utilized. The version of theUSBC containing both the VAC section numbers and the model code numbering is available from the Vir-ginia Department of Housing and Community Development (DHCD) and may also be accessed through thewebsite of the Virginia Code Commission or by subscription to the VAC.

    OverviewThe USBC is divided into three stand-alone parts. Part I contains regulations specific to the construction ofnew buildings and structures and is known as the Virginia Construction Code . Part II contains regulationsspecific to the rehabilitation of existing buildings, including alterations, additions and change of occupancyin existing buildings and structures, and is known as the Virginia Rehabilitation Code. Part III of the USBCcontains the regulations for the maintenance of existing structures which is enforced at the option of thelocal governments. It is known as the Virginia Maintenance Code .

    Codes Purchased from ICCThe 2012 edition of the USBC is being made available in pamphlet form as in past editions of the USBC. Inthe state pamphlet version, a single line is placed in the margin to delineate changes between the 2009edition of the USBC and the 2012 edition of the USBC. In addition to the pamphlet form of the USBC pub-lished by DHCD, the International Code Council (ICC) publishes versions of the Virginia Construction Code,Virginia Rehabilitation Code, Virginia Maintenance Code and a series of Virginia specific trade codes. Inthe ICC published versions, marginal markings are provided to distinguish between text which is part ofthe International Codes and text which is part of the state regulations. Double vertical lines in the marginswithin the body of the codes indicate state amendments to the International Codes. As in the standardprintings of the International Codes, a single vertical line in the margins within the body of the code indi-cates a technical change from the previous edition of the International Codes . Deletions from the previouseditions of the International Codes are indicated in the form of an arrow ( ) in the margin where an en-tire section, paragraph, exception or table has been deleted or an item in a list of items or a table hasbeen deleted.

    Technical AssistanceThe local building departments and enforcing agencies may be contacted for further information concern-ing the USBC. Contact information for DHCD is below.

    DHCD, Division of Building and Fire RegulationState Building Codes Office

    600 East Main Street, Suite 300Richmond, Virginia 23219

    Phon e: 804) 371-7150 Email: sbco@dhcd.virginia.govWebsite: www.dhcd.virginia.gov

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    2012 VIRGINIA CONSTRUCTION CODE ii

    TABLE OF CONTENTS

    CHAPTER 1 ADMINISTRATION

    Section

    101 General ..l102 Purpose and Scope ...2103 Application of Code .3104 Enforcement, Generally ...6105 Local Building Department ......7106 Power and Duties of the Building Official ...8107 Fees ...........8108 Application for Permit ......9109 Construction Documents ....11110 Permits 12111 RDP Services ..13

    112 Workmanship, Materials and Equipment ...14113 Inspections ..17114 Stop Work Orders ...18115 Violations ...19116 Certificates of Occupancy ..19117 Temporary and Moved Buildings

    and Structures, Demolition .20118 Unsafe Buildings or Structures ..21119 Appeals ...22

    CHAPTER 2 DEFINITIONS .......25

    CHAPTER 3 USE AND OCCUPANCYCLASSIFICATION ...29

    CHAPTER 4 SPECIAL DETAILEDREQUIREMENTS BASED ONUSE AND OCCUPANCY .73

    CHAPTER 5 GENERAL BUILDINGHEIGHTS AND AREAS ...79

    CHAPTER 7 FIRE AND SMOKEPROTECTION FEATURES 81

    CHAPTER 8 INTERIOR FINISHES ..83

    CHAPTER 9 FIRE PROTECTION SYSTEMS 85

    CHAPTER 10 MEANS OF EGRESS ....91

    CHAPTER 11 ACCESSIBILITY ..95

    CHAPTER 12 INTERIOR ENVIRONMENT .....97

    CHAPTER 13 ENERGY EFFICIENCY ..99

    CHAPTER 14 EXTERIOR WALLS ...105

    CHAPTER 16 STRUCTURAL DESIGN 107

    CHAPTER 17 STRUCTURAL TESTS ANDSPECIAL INSPECTIONS ..109

    CHAPTER 18 SOILS AND FOUNDATIONS ...111

    CHAPTER 23 WOOD ..113

    CHAPTER 26 PLASTIC ..119

    CHAPTER 27 ELECTRICAL .....121

    CHAPTER 28 MECHANICAL SYSTEMS 123

    CHAPTER 29 PLUMBING SYSTEMS ..127

    CHAPTER 30 ELEVATORS ANDCONVEYING SYSTEMS ...137

    CHAPTER 31 SPECIAL CONSTRUCTION 139

    CHAPTER 33 SAFEGUARDS DURINGCONSTRUCTION ...141

    CHAPTER 34 EXISTING BUILDINGS 143

    CHAPTER 35 REFERENCED STANDARDS ..144

    APPENDIX E SUPPLEMENTARYACCESSIBILITYREQUIREMENTS ...147

    APPENDIX F RODENTPROOFING .149

    APPENDIX H SIGNS ...151

    APPENDIX I PATIO COVERS .153

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    2012 VIRGINIA CONSTRUCTION CODE 1

    CHAPTER 1

    ADMINISTRATION

    SECTION 101GENERAL

    101.1 Short title. The Virginia Uniform Statewide Build-ing Code, Part I, Construction, may be cited as the VirginiaConstruction Code or as the VCC. The term USBC shallmean the VCC unless the context in which the term is usedclearly indicates it to be an abbreviation for the entire Vir-ginia Uniform Statewide Building Code or for a different

    part of the Virginia Uniform Statewide Building Code.

    Note: This code is also known as the 2012 edition ofthe USBC due to the use of the 2012 editions of themodel codes.

    101.2 Incorporation by reference. Chapters 2 - 35 of the2012 International Building Code, published by the Inter-national Code Council, Inc., are adopted and incorporated

    by reference to be an enforceable part of the USBC. Theterm IBC means the 2012 International Building Code,

    published by the International Code Council, Inc. Anycodes and standards referenced in the IBC are also consid-ered to be part of the incorporation by reference, exceptthat such codes and standards are used only to the pre-scribed extent of each such reference. In addition, any pro-visions of the appendices of the IBC specifically identifiedto be part of the USBC are also considered to be part of the

    incorporation by reference.Note 1: The IBC references other International Codesand standards including the following major codes:

    2012 International Plumbing Code (IPC)2012 International Mechanical Code (IMC)2011 NFPA 702012 International Fuel Gas Code (IFGC)2012 International Energy Conservation Code(IECC)2012 International Residential Code (IRC)

    Note 2: The IRC is applicable to the construction ofdetached one- and two-family dwellings and town-houses as set out in Section 310.

    101.3 Numbering system. A dual numbering system isused in the USBC to correlate the numbering system of theVirginia Administrative Code with the numbering systemof the IBC. IBC numbering system designations are pro-vided in the catchlines of the Virginia Administrative Codesections. Cross references between sections or chapters ofthe USBC use only the IBC numbering system designa-tions. The term chapter is used in the context of the num-

    bering system of the IBC and may mean a chapter in theUSBC, a chapter in the IBC or a chapter in a referencedcode or standard, depending on the context of the use of theterm. The term chapter is not used to designate a chapterof the Virginia Administrative Code, unless clearly indicat-ed.

    101.4 Arrangement of code provisions. The USBC iscomprised of the combination of (i) the provisions of Chap-ter 1, Administration, which are established herein, (ii)Chapters 2 - 35 of the IBC, which are incorporated by ref-erence in Section 101.2, and (iii) the changes to the text ofthe incorporated chapters of the IBC that are specificallyidentified. The terminology changes to the text of the in-

    corporated chapters of the IBC that are specifically identi-fied shall also be referred to as the state amendments tothe IBC. Such state amendments to the IBC are set out us-ing corresponding chapter and section numbers of the IBCnumbering system. In addition, since Chapter 1 of the IBCis not incorporated as part of the USBC, any reference to a

    provision of Chapter 1 of the IBC in the provision