Fire resistance rated construction
As per BC 110.3.4, Fire-resistance-rated construction shall be inspected to determine compliance with the approved construction documents, including inspection of the following work:
1-Fire-resistance-rated partitions, floors, ceilings, shafts; and
Exception: Where the scope of work affecting an existing fire-rated wall assembly is limited to through-penetration firestopping and, in the course of work, the cutting away or removal of any part of the existing fire-resistance-rated construction becomes necessary in the general area surrounding the penetration, not to exceed 4 square feet (0.37 m2) in any given area, the progress inspection for fire-resistance-rated construction shall not be required provided that the special inspection agency for the through-penetration fire-stopping special inspection verifies that the removed portion of fire-resistance-rated construction (i) is less than 4 square feet (0.37 m2), and (ii) has been restored to its original condition.
The special inspector who takes the responsibility when he/she signs the TR1 identifies this item on the form. This item comes under progress inspection and requires more than one visit by the special inspector at the job site. Inspectors performing this inspection must be accompanied by the approved construction documents clearly identifying the fire rating of all the fire-rated walls, floors, ceilings, shafts, etc.
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