Section 27-873. Underground chimney connectors

Latest version.

Underground  chimney
  connectors shall be covered with at least twelve inches of solid masonry
  or an equivalent insulation. Each cleanout  opening  shall  be  provided
  with  double  iron  doors  or  covers,  and the doors or covers shall be
  twelve inches apart with the intervening space  filled  with  insulating
  material.    The doors or covers shall be not less than 10 manufacturers
  standard gauge. No combustible flooring shall  be  permitted  over  such
  connectors.

                    
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