The period of structural adequacy (PSA) determine from a single test may be applied without modification provided:
- a) Conditions, specified in 16.6.3 are satisfied,
- b) Conditions of support are the same as the prototype and the restraints are not less favourable than those of the prototype, and
- c) Ratio of the design load for fire to the design capacity of the member is less than or equal to that of the prototype.