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Article 701: Enactment and Update of the New York City Building Code
§ 28-701.1 Update.
§ 28-701.2 Enactment of the New York City Building Code.
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Chapter 2: Definitions
Chapter 3: Use and Occupancy Classification
Chapter 4: Special Detailed Requirements Based on Use and Occupancy
Chapter 5: General Building Heights and Areas; Separation of Occupancies
Chapter 6: Types of Construction
Chapter 7: Fire and Smoke Protection Features
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Chapter 20: Aluminum
Chapter 21: Masonry
Section BC 2101: General
Section BC 2102: Definitions and Notations
Section BC 2103: Masonry Construction Materials
Section BC 2104: Construction
Section BC 2105: Quality Assurance
Section BC 2106: Seismic Design
Section BC 2107: Allowable Stress Design
Section BC 2108: Strength Design of Masonry
Section BC 2109: Empirical Design of Masonry
Section BC 2110: Glass Unit Masonry
Section BC 2111: Masonry Fireplaces
Section BC 2112: Masonry Heaters
Section BC 2113: Masonry Chimneys
2113.1 General.
2113.1.1 Chimney adequacy for temperature and gas action.
2113.1.2 Chimney linings.
2113.1.3 Chimney expansion and contraction.
2113.1.4 Reinforcing rings.
2113.1.5 Existing chimneys and vents.
2113.1.5.1 Responsibility of owner of taller building.
2113.1.5.1.1 Chimney and vent plan.
2113.1.5.2 Protection of draft.
2113.1.5.3 Written notification, plans and required documents.
2113.1.5.3.1 First notice.
2113.1.5.3.2 Second notice.
2113.1.5.3.3 Plans and required documentation for alteration work.
2113.1.5.4 Approval.
2113.1.5.5 Refusal of consent.
2113.1.5.6 Procedure.
2113.1.5.7 Existing violations.
2113.1.5.8 Variance.
2113.2 Footings and foundations.
2113.3 Seismic reinforcing.
2113.3.1 Vertical reinforcement.
2113.3.2 Horizontal reinforcement.
2113.4 Seismic anchorage.
2113.5 Corbeling.
2113.6 Changes in dimension.
2113.7 Offsets.
2113.8 Additional load.
2113.9 Termination.
2113.9.1 Chimney caps.
2113.9.2 Spark arrestors.
2113.9.3 Rain caps.
2113.9.3.1 Decorative shrouds.
2113.10 Wall thickness.
2113.11 Flue lining (material).
2113.11.1 Residential-type appliances and low heat appliances (general).
2113.11.1.1 Flue linings for specific appliances.
2113.11.1.2 Gas appliances.
2113.11.1.3 Pellet fuel-burning appliances.
2113.11.1.4 Oil-fired appliances approved for use with L-vent.
2113.11.1.5 Notice of usage.
2113.11.2 Masonry chimneys for medium-heat appliances.
2113.11.2.1 Construction.
2113.11.2.2 Lining.
2113.11.2.3 Multiple passageway.
2113.11.2.4 Termination height.
2113.11.2.5 Clearance.
2113.11.3 Masonry chimneys for high-heat appliances.
2113.11.3.1 Construction.
2113.11.3.2 Lining.
2113.11.3.3 Termination height.
2113.11.3.4 Clearance.
2113.12 Clay flue lining (installation).
2113.13 Additional requirements.
2113.13.1 Listed materials.
2113.13.2 Space around lining.
2113.14 Multiple flues.
2113.15 Flue area (appliance).
2113.16 Flue area (masonry fireplace).
2113.16.2 Determination of minimum area.
2113.17 Inlet.
2113.18 Masonry chimney cleanout openings.
2113.19 Chimney clearances.
2113.19.1 Additional requirements for clearance.
2113.20 Chimney fireblocking.
2113.21 Test run.
2113.22 Requirement of a smoke test.
2113.22.1 Smoke test.
Section BC 2114: Structural Integrity Requirements
Chapter 22: Steel
Chapter 23: Wood
Chapter 24: Glass and Glazing
Chapter 25: Gypsum Board, Gypsum Panel Products and Plaster
Chapter 26: Plastic
Chapter 27: Electrical
Chapter 28: Mechanical Systems
Chapter 29: Plumbing Systems
Chapter 30: Elevators and Conveying Systems
Chapter 31: Special Construction
Chapter 32: Encroachments Into the Public Right-of-Way
Chapter 33: Safeguards During Construction or Demolition
Chapter 34: Reserved
Chapter 35: Referenced Standards
Appendix A: Reserved
Appendix B: Reserved
Appendix C: Reserved
Appendix D: Fire Districts
Appendix E: Supplementary Accessibility Requirements
Appendix F: Rodent Proofing
Appendix G: Flood-Resistant Construction
Appendix H: Outdoor Signs
Appendix I Reserved
Appendix J Reserved
Appendix K: Modified Industry Standards for Elevators and Conveying Systems
Appendix L: Reserved
Appendix M: Supplementary Requirements for One- and Two-Family Dwellings
Appendix N: Assistive Listening Systems Performance Standards
Appendix O: Reserved
Appendix P: Reserved
Appendix Q: Modified National Standards for Automatic Sprinkler, Standpipe, Fire Pump, Fire Alarm, and Smoke Control Systems
Appendix R: Acoustical Tile and Lay-In Panel Ceiling Suspension Systems
Appendix S: Supplementary Figures for Luminous Egress Path Markings
Appendix U: Ancillary Dwelling Units
Chapter 8: New York City Mechanical Code
Chapter 9: New York City Fuel Gas Code
Chapter 10: New York City Energy Code
Chapter 11: The New York City Electrical Code
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2113.9.2 Spark arrestors.
Where a spark arrestor is installed on a masonry chimney, the spark arrestor shall meet all of the following requirements:
   1.   The net free area of the arrestor shall be not less than four times the net free area of the outlet of the chimney flue it serves.
   2.   The arrestor screen shall have heat and corrosion resistance equivalent to 19-gage galvanized steel or 24-gage stainless steel.
   3.   Openings shall not permit the passage of spheres having a diameter greater than 1/2 inch (12.7 mm) nor block the passage of spheres having a diameter less than 3/8 inch (9.5 mm).
   4.   The spark arrestor shall be accessible for cleaning and the screen or chimney cap shall be removable to allow for cleaning of the chimney flue.
2113.9.3 Rain caps.
Termination caps shall not be permitted and a 3-inch (76 mm) minimum drain shall be installed to receive collected water. A positive means shall be provided to prevent water from entering the appliance.
   Exception: Termination caps shall be permitted on listed factory-built chimneys.
2113.9.3.1 Decorative shrouds.
Decorative shrouds shall not be installed at the termination of factory-built chimneys except where such shrouds are listed and labeled for use with the specific factory-built chimney system and are installed in accordance with the manufacturers' installation instructions.
2113.10 Wall thickness.
Masonry chimney walls shall be constructed of concrete, solid masonry units or hollow masonry units grouted solid with not less than 4 inches (102 mm) nominal thickness, or 8 inches (203 mm) nominal thickness for chimney walls extending more than 3 feet (914 mm) above the highest lateral support point.
2113.11 Flue lining (material).
Masonry chimneys shall be lined. The lining material shall be appropriate for the type of appliance connected, according to the terms of the appliance listing and the manufacturer's instructions.
2113.11.1 Residential-type appliances and low heat appliances (general).
Flue lining systems shall comply with one of the following:
   1.   Clay flue lining complying with the requirements of ASTM C 315.
   2.   Listed chimney lining systems complying with UL 1777.
   3.   Factory-built chimneys or chimney units listed for installation within masonry chimneys.
   4.   Other approved materials that will resist corrosion, erosion, softening or cracking from flue gases and condensate at temperatures up to 1,800°F (982°C).
2113.11.1.1 Flue linings for specific appliances.
Flue linings other than those covered in Section 2113.11.1 intended for use with specific appliances shall comply with Sections 2113.11.1.2 through 2113.11.1.4 and Sections 2113.11.2 and 2113.11.3.
2113.11.1.2 Gas appliances.
Flue lining systems for gas appliances shall be in accordance with the New York City Fuel Gas Code, and ULC-S635.

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