The term ‘fire hazard properties’ as defined in the NCC means the following properties of a material or assembly that indicate how they behave under specific fire test conditions:

  • Average specific extinction area, critical radiant flux and Flammability Index, determined as defined in Schedule 3.
  • Smoke-Developed Index, smoke development rate and Spread-of-Flame Index, determined in accordance with Schedule 6.
  • Group number and smoke growth rate index (SMOGRARC), determined in accordance with Specification C1.10 of Volume One.

Here the key provision dealing with fire hazard properties is C1.10 of Volume One, which requires that the fire hazard properties of the internal linings, material and assemblies (in Class 2 to 9 building) listed in C1.10 must comply with Specification C1.10.

But what do these terms really mean, and what is the relevant evidence required?

Our NCC CPD course on Evidence of Suitability provides guidance and understanding on how to apply the NCC’s evidence of suitability provisions. Topic areas covered include obtaining evidence that is commensurate with the complexity of the project. Practical examples will be given to illustrate how this works, as well as a walk-through of the decision-making process so you can determine level and type of evidence required.

Find out more.