Sentence 9.21.4.6.(3)

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

Objective

OS1 Fire Safety

Attribution

Intent

Intent 1:

To limit the probability that vertical expansion of the chimney liner when heated will lead to damage or lifting of the concrete cap, which could lead to water ingress, which could lead to structural damage to the chimney due to freeze-thaw stresses, which could lead to compromised fire safety, which could lead to the ignition of combustible building components, which could lead to harm to persons.

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