§ 30-40. Factory-fabricated chimneys.  


Latest version.
  • A. 
    Every factory-built chimney shall be equipped with a suitable means for cleaning access at the base and a suitable termination at the top.
    B. 
    Factory-built housings which are field assembled shall be equipped with steel tension straps secured to the roof framing by nails and to the housing by bolts.
    C. 
    Factory-built housings which are factory-assembled must be secured to the roof framing with screws or bolts.
    D. 
    For use on commercial buildings, DWS (double-wall steel) vents may be used for gas-heat appliances only. DWS vents shall be installed in accordance with their listing and/or the manufacturer's instructions.
    E. 
    The installation of factory-fabricated chimneys shall be in accordance with the appropriate standards of the NFPA and the manufacturer's instructions.