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eLibrary > North Carolina State Building Code: Existing Building Code >

North Carolina State Building Code: Existing Building Code, 2024

NORTH CAROLINA STATE BUILDING CODE: EXISTING BUILDING CODE
COPYRIGHT
NORTH CAROLINA STATE BUILDING CODE COUNCIL DECEMBER 13, 2022
NORTH CAROLINA STATE BUILDING CODE COUNCIL SUPER COMMITTEE MEMBERS DECEMBER 13, 2022
NORTH CAROLINA OFFICE OF STATE FIRE MARSHAL
NORTH CAROLINA STATE BUILDING CODE COUNCIL EXISTING BUILDING AD-HOC COMMITTEE DECEMBER 13, 2022
PREFACE
ARRANGEMENT AND FORMAT OF THE 2021 IEBC
TABLE OF CONTENTS
CHAPTER 1 SCOPE AND ADMINISTRATION [Go to Page]
PART 1—SCOPE AND APPLICATION [Go to Page]
SECTION 101 SCOPE AND GENERAL REQUIREMENTS
SECTION 102 APPLICABILITY
PART 2—ADMINISTRATION AND ENFORCEMENT [Go to Page]
SECTION 103 CODE COMPLIANCE AGENCY
SECTION 104 DUTIES AND POWERS OF CODE OFFICIAL
SECTION 105 PERMITS
SECTION 106 CONSTRUCTION DOCUMENTS
SECTION 107 TEMPORARY STRUCTURES AND USES
SECTION 108 FE
SECTION 109 INSPECTIONS
SECTION 110 CERTIFICATE OF OCCUPANCY
SECTION 111 SERVICE UTILITIES
SECTION 112 MEANS OF APPEALS
SECTION 113 VIOLATIONS
SECTION 114 STOP WORK ORDER
SECTION 115 UNSAFE STRUCTURES AND EQUIPMENT
SECTION 116 EMERGENCY MEAS
SECTION 117 DEMOLITION
CHAPTER 2 DEFINITIONS [Go to Page]
SECTION 201 GENERAL
SECTION 202 GENERAL DEFINITIONS
CHAPTER 3 PROVISIONS FOR ALL COMPLIANCE METHODS [Go to Page]
SECTION 301 ADMINISTRATION
SECTION 302 GENERAL PROVISIONS
SECTION 303 STORM SHELTERS
SECTION 304 STRUCTURAL DESIGN LOADS AND EVALUATION AND DESIGN PROCEDURES
SECTION 305 IN-SITU LOAD TESTS
SECTION 306 ACCESSIBILITY FOR EXISTING BUILDINGS [Go to Page]
TABLE 306.7.6.1 RAMPS
SECTION 307 FIRE PROTECTION
SECTION 308 CARBON MONOXIDE ALARMS AND DETECTION
SECTION 309 ADDITIONS AND REPLACEMENTS OF EXTERIOR WALL COVERINGS AND EXTERIOR WALL ENVELOPES
SECTION 310 FIRE DISTRICT
SECTION 311 TEMPORARY OVERFLOW EMERGENCY SHELTERS FOR THE HOMELESS
SECTION 312 LICENSED CARE FACILITES
CHAPTER 4 REPAIRS [Go to Page]
SECTION 401 GENERAL
SECTION 402 BUILDING ELEMENTS AND MATERIALS
SECTION 403 FIRE PROTECTION
SECTION 404 MEANS OF EGRESS
SECTION 405 STRUCTURAL
SECTION 406 ELECTRICAL
SECTION 407 MECHANICAL
SECTION 408 PLUMBING
SECTION 409 ENERGY CONSERVATION
CHAPTER 5 PRESCRIPTIVE COMPLIANCE METHOD [Go to Page]
SECTION 501 GENERAL
SECTION 502 ADDITIONS
SECTION 503 ALTERATIONS
SECTION 504 FIRE ESCAPES
SECTION 505 WINDOWS AND EMERGENCY ESCAPE OPENINGS
SECTION 506 CHANGE OF OCCUPANCY
SECTION 507 HISTORIC BUILDINGS
CHAPTER 6 CLASSIFICATION OF WORK [Go to Page]
SECTION 601 GENERAL
SECTION 602 ALTERATION—LEVEL 1
SECTION 603 ALTERATION—LEVEL 2
SECTION 604 ALTERATION—LEVEL 3
SECTION 605 CHANGE OF OCCUPANCY
SECTION 606 ADDITIONS
SECTION 607 HISTORIC BUILDINGS
CHAPTER 7 ALTERATIONS—LEVEL 1 [Go to Page]
SECTION 701 GENERAL
SECTION 702 BUILDING ELEMENTS AND MATERIALS
SECTION 703 FIRE PROTECTION
SECTION 704 MEANS OF EGRESS
SECTION 705 REROOFING
SECTION 706 STRUCTURAL
SECTION 707 ELECTRICAL
SECTION 708 ENERGY CONSERVATION
CHAPTER 8 ALTERATIONS—LEVEL 2 [Go to Page]
SECTION 801 GENERAL
SECTION 802 BUILDING ELEMENTS AND MATERIALS
SECTION 803 FIRE PROTECTION
SECTION 804 MEANS OF EGRESS [Go to Page]
TABLE 804.2.1a, bCAPACITY PER UNIT OF EGRESS WIDTH
TABLE 804.4.1.1(1) STORIES WITH ONE EXIT OR ACCESS TO ONE EXIT FOR R-2OCCUPANCIES
TABLE 804.4.1.1(2) STORIES WITH ONE EXIT OR ACCESS TO ONE EXIT FOROTHER OCCUPANCIESb
SECTION 805 STRUCTURAL
SECTION 806 ELECTRICAL
SECTION 807 MECHANICAL
SECTION 808 PLUMBING
SECTION 809 ENERGY CONSERVATION
CHAPTER 9 ALTERATIONS—LEVEL 3 [Go to Page]
SECTION 901 GENER
SECTION 902 SPECIAL USE AND OCCUPANCY
SECTION 903 BUILDING ELEMENTS AND MATERIALS
SECTION 904 FIRE PROTECTION
SECTION 905 MEANS OF EGRESS
SECTION 906 STRUCTURAL [Go to Page]
TABLE 906.3.1 PERFORMANCE OBJECTIVES FOR USE IN ASCE 41 FOR COMPLIANCE WITH FULL SEISMIC FORCES
TABLE 906.3.2 PERFORMANCE OBJECTIVES FOR USE IN ASCE 41 FOR COMPLIANCE WITH REDUCED SEISMIC FORCES
SECTION 907 ENERGY CONSERVATION
CHAPTER 10 CHANGE OF OCCUPANCY [Go to Page]
SECTION 1001 GENERAL
SECTION 1002 SPECIAL USE AND OCCUPANCY
SECTION 1003 BUILDING ELEMENTS AND MATERIALS
SECTION 1004 FIRE PROTECTION
SECTION 1005 MEANS OF EGRESS
SECTION 1006 STRUCTURAL
SECTION 1007 ELECTRICAL
SECTION 1008 MECHANICAL
SECTION 1009 PLUMBING
SECTION 1010 OTHER REQUIREMENTS
SECTION 1011 CHANGE OF OCCUPANCY CLASSIFICATION [Go to Page]
TABLE 1011.2.1 SPRINKLER HAZARD CATEGORIES
TABLE 1011.5 MEANS OF EGRESS HAZARD CATEGORIES
TABLE 1011.6 HEIGHTS AND AREAS HAZARD CATEGORIES
TABLE 1011.7 EXPOSURE OF EXTERIOR WALLS HAZARD CATEGORIES
CHAPTER 11 ADDITIONS [Go to Page]
SECTION 1101 GENERAL
SECTION 1102 HEIGHTS AND AREAS
SECTION 1103 STRUCTURAL
SECTION 1104 ENERGY CONSERVATION
CHAPTER 12 HISTORIC BUILDINGS [Go to Page]
SECTION 1201 GENERAL
SECTION 1202 REPAIRS
SECTION 1203 FIRE SAFETY
SECTION 1204 CHANGE OF OCCUPANCY
SECTION 1205 STRUCTURAL
SECTION 1206 RELOCATED BUILDINGS
CHAPTER 13 PERFORMANCE COMPLIANCE METHODS [Go to Page]
SECTION 1301 GENERAL [Go to Page]
EQUATION 13-1
EQUATION 13-2
EQUATION 13-3
EQUATION 13-4
EQUATION 13-5
TABLE 1301.6.3 COMPARTMENTATION VALUES
TABLE 1301.6.4 SEPARATION VALUES
TABLE 1301.6.5 CORRIDOR WALL VALUES
TABLE 1301.6.6(1) VERTICAL OPENING PROTECTION VALUE
TABLE 1301.6.6(2) CONSTRUCTION-TYPE FACTOR
EQUATION 13-6
TABLE 1301.6.8 AUTOMATIC FIRE DETECTION VALUES
TABLE 1301.6.9 FIRE ALARM SYSTEM VALUES
TABLE 1301.6.10 SMOKE CONTROL VALUES
TABLE 1301.6.11 MEANS OF EGRESS VALUES
TABLE 1301.6.12 DEAD-END VALUES
EQUATION 13-7
TABLE 1301.6.14 ELEVATOR CONTROL VALUES
TABLE 1301.6.15 MEANS OF EGRESS EMERGENCY LIGHTING VALUES
TABLE 1301.6.16 MIXED OCCUPANCY VALUESa
TABLE 1301.6.17 SPRINKLER SYSTEM VALUES
TABLE 1301.6.18 STANDPIPE SYSTEM VALUES
TABLE 1301.6.19 INCIDENTAL USE AREA VALUES
TABLE 1301.6.20 SMOKE COMPARTMENTATION VALUES
TABLE 1301.6.21.1 CARE RECIPIENT ABILITY VALUES
TABLE 1301.6.21.2 CARE RECIPIENT CONCENTRATION VALUES
TABLE 1301.6.21.3 ATTENDANT-TO-CARE RECIPIENTS RATIO VALUES
TABLE 1301.8 MANDATORY SAFETY SCORESa
TABLE 1301.7 SUMMARY SHEET—BUILDING CODE
TABLE 1301.9 EVALUATION FORMULASa
CHAPTER 14 RELOCATED OR MOVED BUILDINGS [Go to Page]
SECTION 1401 GENERAL
SECTION 1402 REQUIREMENTS
CHAPTER 15 CONSTRUCTION SAFEGUARDS [Go to Page]
SECTION 1501 GENERAL [Go to Page]
TABLE 1501.6 PROTECTION OF PEDESTRIANS
SECTION 1502 PROTECTION OF ADJOINING PROPERTY
SECTION 1503 TEMPORARY USE OF STREETS, ALLEYS AND PUBLIC PROPERTY
SECTION 1504 FIRE EXTINGUISHERS
SECTION 1505 MEANS OF EGRESS
SECTION 1506 STANDPIPES
SECTION 1507 AUTOMATIC SPRINKLER SYSTEM
SECTION 1508 ACCESSIBILITY
SECTION 1509 WATER SUPPLY FOR FIRE PROTECTION
CHAPTER 16 REFERENCED STANDARDS [Go to Page]
ASCE/SEI
ASHRAE
ASME
ASTM
ICC
NFPA
UL
APPENDIX A—GUIDELINES FOR THE SEISMIC RETROFIT OF EXISTING BUILDINGS [Go to Page]
CHAPTER A1 SEISMIC STRENGTHENING PROVISIONS FOR UNREINFORCED MASONRY BEARING WALL BUILDINGS [Go to Page]
SECTION A101 PURPOSE
SECTION A102 SCOPE [Go to Page]
TABLE A102.1 ELEMENTS REGULATED BY THIS CHAPTER
SECTION A103 DEFINITIONS
SECTION A104 SYMBOLS AND NOTATIONS
SECTION A105 GENERAL REQUIREMENTS
SECTION A106 MATERIALS REQUIREMENTS [Go to Page]
EQUATION A1-1
EQUATION A1-2
SECTION A107 QUALITY CONTROL
SECTION A108 DESIGN STRENGTHS [Go to Page]
EQUATION A1-3
EQUATION A1-4
SECTION A109 ANALYSIS AND DESIGN PROCEDURE
SECTION A110 GENERAL PROCEDURE [Go to Page]
EQUATION A1-5
TABLE A108.1(1) STRENGTH VALUES FOR EXISTING MATERIALS
SECTION A111 SPECIAL PROCEDURE [Go to Page]
TABLE A108.1(2) STRENGTH VALUES OF NEW MATERIALS USED IN CONJUNCTION WITH EXISTING CONSTRUCTION
TABLE A110.2 ALLOWABLE VALUE OF HEIGHT-TO-THICKNESS RATIO OF UNREINFORCED MASONRY WALLS
EQUATION A1-6
EQUATION A1-7
EQUATION A1-9
EQUATION A1-10
FIGURE A111.4.1 ACCEPTABLE DIAPHRAGM SPAN
EQUATION A1-11
EQUATION A1-12
TABLE A111.5 HORIZONTAL FORCE FACTOR, Cp
EQUATION A1-13
EQUATION A1-14
EQUATION A1-15
EQUATION A1-16
EQUATION A1-17
SECTION A112 ANALYSIS AND DESIGN [Go to Page]
EQUATION A1-18
EQUATION A1-19
EQUATION A1-20
EQUATION A1-21
EQUATION A1-22
EQUATION A1-23
FIGURE A112.2.2 ANALYSIS OF URM WALL IN-PLANE SHEAR FORCES
SECTION A113 DETAILED BUILDING SYSTEM DESIGN REQUIREMENTS [Go to Page]
TABLE A113.6 MAXIMUM ALLOWABLE HEIGHT-TO-THICKNESS RATIO FOR PARAPETS
SECTION A114 WALLS OF UNBURNED CLAY,ADOBE OR STONE MASONRY [Go to Page]
TABLE A114.1 MAXIMUM HEIGHT-TO-THICKNESS RATIO FOR ADOBE OR STONE WALLS
CHAPTER A2 EARTHQUAKE HAZARD REDUCTION IN EXISTING REINFORCED CONCRETE AND REINFORCED MASONRY WALL BUILDINGS WITH FLEXIBLE DIAPHRAGMS [Go to Page]
SECTION A201 PURPOSE
SECTION A202 SCOPE
SECTION A203 DEFINITIONS
SECTION A204 SYMBOLS AND NOTATIONS
SECTION A205 GENERAL REQUIREMENTS
SECTION A206 ANALYSIS AND DESIGN
SECTION A207 MATERIALS OF CONSTRUCTION
CHAPTER A3 PRESCRIPTIVE PROVISIONS FOR SEISMIC STRENGTHENINGOF CRIPPLE WALLS AND SILL PLATE ANCHORAGE OF LIGHT, WOOD-FRAME RESIDENTIAL BUILDINGS [Go to Page]
SECTION A301 GENERAL
SECTION A302 DEFINITIONS
SECTION A303 STRUCTURAL WEAKNESSES
SECTION A304 STRENGTHENING REQUIREMENTS [Go to Page]
FIGURE A304.1.3 TYPICAL FLOOR TO CRIPPLE WALL CONNECTION (FLOOR JOISTS NOT PARALLEL TO FOUNDATIONS)
FIGURE A304.1.4(1) TYPICAL FLOOR TO CRIPPLE WALL CONNECTION (FLOOR JOISTS PARALLEL TO FOUNDATIONS)
FIGURE A304.1.4(2) TYPICAL FLOOR TO MUDSILL CONNECTIONS
FIGURE A304.1.4(3) ALTERNATIVE FLOOR FRAMING TO CRIPPLE WALL CONNECTION
FIGURE A304.2.3(1) NEW REINFORCED CONCRETE FOUNDATION SYSTEM
FIGURE A304.2.3(2) NEW MASONRY CONCRETE FOUNDATION
TABLE A304.2.3(1) NEW REINFORCED CONCRETE FOUNDATION SYSTEM
TABLE A304.2.3(2) NEW MASONRY CONCRETE FOUNDATION
TABLE A304.3.1 SILL PLATE ANCHORAGE AND CRIPPLE WALL BRACING
FIGURE A304.3.1(1) SILL PLATE BOLTING TO EXISTING FOUNDATIONa, b
FIGURE A304.3.1(2) ALTERNATIVE SILL PLATE ANCHORING IN EXISTING FOUNDATION—WITHOUTCRIPPLE WALLS AND FLOOR FRAMING NOT PARALLEL TO FOUNDATIONSa, b
FIGURE A304.3.1(3) ALTERNATIVE SILL PLATE ANCHOR TO EXISTING FOUNDATION WITHOUT CRIPPLE WALL AND FLOOR FRAMING PARALLEL TO FOUNDATIONS
FIGURE A304.3.1(4) SILL PLATE ANCHORING TO EXISTING FOUNDATION—ALTERNATIVE CONNECTION FOR BATTERED FOOTING
TABLE A304.3.2 SILL PLATE ANCHORAGE FOR VARIOUS LENGTHS OF SILL PLATEa, b
FIGURE A304.4.1(1) CRIPPLE WALL BRACING WITH NEW WOOD STRUCTURAL PANEL ON EXTERIOR FACE OF CRIPPLE STUDS
FIGURE A304.4.1(2) CRIPPLE WALL BRACING WITH WOOD STRUCTURAL PANEL ON INTERIOR FACE OF CRIPPLE STUDS
FIGURE A304.4.1(3) PARTIAL CRIPPLE STUD WALL ELEVATION
FIGURE A304.4.2 FLOOR PLAN-CRIPPLE WALL BRACING LAYOUT
CHAPTER A4 EARTHQUAKE RISK REDUCTION IN WOOD-FRAME RESIDENTIAL BUILDINGS WITH SOFT, WEAK OR OPEN FRONT WALLS [Go to Page]
SECTION A401 GENERAL
SECTION A402 DEFINITIONS
SECTION A403 ANALYSIS AND DESIGN
SECTION A404 PRESCRIPTIVE MEASURES FOR WEAK STORY
SECTION A405 MATERIALS OF CONSTRUCTION
SECTION A406 CONSTRUCTION DOCUMENTS
SECTION A407 QUALITY CONTROL
CHAPTER A5 REFERENCED STANDARDS [Go to Page]
SECTION A501 REFERENCED STANDARDS [Go to Page]
TABLE A501.1 REFERENCED STANDARDS [Go to Page]
TABLE A501.1—continued REFERENCED STANDARDS
APPENDIX B SUPPLEMENTARY ACCESSIBILITY REQUIREMENTS FOR EXISTING BUILDINGS AND FACILITIES [Go to Page]
SECTION B101 QUALIFIED HISTORIC BUILDINGS AND FACILITIES
SECTION B102 FIXED TRANSPORTATION FACILITIES AND STATIONS
SECTION B103 DWELLING UNITS AND SLEEPING UNITS
SECTION B104 REFERENCED STANDARDS [Go to Page]
TABLE B104.1 REFERENCED STANDARDS
APPENDIX C—GUIDELINES FOR THE WIND RETROFIT OF EXISTING BUILDINGS [Go to Page]
CHAPTER C1 GABLE END RETROFIT FOR HIGH-WIND AREAS [Go to Page]
SECTION C101 GENERAL
SECTION C102 DEFINITIONS
SECTION C103 MATERIALS OF CONSTRUCTION [Go to Page]
TABLE C103.3 MATERIAL SPECIFICATIONS FOR RETROFITSa
TABLE C103.5 NAIL AND SCREW REQUIREMENTS
FIGURE C103.5.3 FASTENER SPACINGS FOR LUMBER-TO-LUMBER CONNECTIONS OPERATING IN SHEAR PARALLEL TO GRAIN
SECTION C104 RETROFITTING GABLE END WALLS TO ENHANCE WIND RESISTANCE [Go to Page]
FIGURE C104.1 BASIC GABLE END RETROFIT METHODOLOGY
TABLE C104.2 STUD LENGTH LIMITATIONS BASED ON EXPOSURE AND DESIGN WIND SPEED
FIGURE C104.2(1) TRUSS FRAMED GABLE END
FIGURE C104.2(2) CONVENTIONALLY FRAMED GABLE END L-BENT STRAP
FIGURE C104.2(3) TRUSS FRAMED GABLE END U-BENT STRAP
FIGURE C104.2(4) CONVENTIONALLY FRAMED GABLE END U-BENT STRAP
FIGURE C104.2.3 OMITTED HORIZONTAL BRACE
FIGURE C104.2.4(1) LADDER BRACING FOR OMITTED RETROFIT STUD (GABLE END FRAME)
FIGURE C104.2.4(2) LADDER BRACING FOR OMITTED RETROFIT STUD (CONVENTIONALLY FRAMED GABLE END)
FIGURE C104.2.5 ANCHOR BLOCK INSTALLATION
FIGURE C104.2.7 DETAIL OF RETROFIT TIE INSTALLATION
FIGURE C104.2.8(1) SPLICED HORIZONTAL BRACES
FIGURE C104.2.8(2) SPLICED HORIZONTAL BRACES
FIGURE C104.2.8(3) SPLICED HORIZONTAL BRACES
FIGURE C104.3 METHOD OF INSTALLING RETROFIT STUDS
FIGURE C104.3.4 NAIL PLATE FASTENING
TABLE C104.4.1 ELEMENT SIZING AND SPACING FOR L-BENT RETROFIT METHOD
TABLE C104.4.2 ELEMENT SIZING AND SPACING FOR U-BENT RETROFIT METHOD
TABLE C104.5.1 SPACING OF GUSSET ANGLES
FIGURE C104.3.8 RETROFIT STUD SPLICES
TABLE C104.5.2 SPACING OF LAG OR MASONRY SCREWS USED TO CONNECT SILL PLATE OF GABLE END WALL TO TOP OF THE WALL BELOW
CHAPTER C2 ROOF DECK FASTENING FOR HIGH-WIND AREAS [Go to Page]
SECTION C201 GENERAL
SECTION C202 ROOF DECK ATTACHMENT FOR WOOD ROOFS [Go to Page]
TABLE C202.1.2 SUPPLEMENT FASTENERS AT PANEL EDGES AND INTERMEDIATE FRAMING
CHAPTER C3 REFERENCED STANDARDS [Go to Page]
SECTION C301 REFERENCED STANDARDS [Go to Page]
TABLE C301.1 REFERENCED STANDARDS
APPENDIX D BOARD OF APPEALS Deleted
INDEX
ICC EVALUATION SERVICE®
ICC DIGITAL CODES PREMIUM®
ICC MEMBERSHIP
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