Sentence 9.21.3.8.(2)

  1. OS1
  2. OH1
  3. OS3
  4. OP1
  5. OS2

Objective

OS1 Fire Safety

Attribution

Intent

Intent 1:

To limit the probability that, on severe overheating [i.e. during a chimney fire], the expansion of the liners will put stress on the masonry surrounding the flue liners, which could lead to the failure of surrounding masonry or the displacement of liner sections, which could lead to the escape of hot gases and flame, which could lead to the ignition of combustible building components, which could lead to harm to persons.

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