O.G. 5.23 attachment 2 Flashcards
Inspection Hole
a diagnostic cut to determine the type direction and spacing of rafters as well as sheathing type and direction.
A heat hole will reduce horizontal spread and also ________________
reduce potential for flashover and backdraft.
Do not conduct ventilation Operations directly over the fire in what type of construction?
lightweight (truss or panelized)
When conducting vertical ventilation operations, trading space for time will allow ___________________________
the roof operations to be complete before fire impinging on the hole being cut.
_____________________ prior to initiating operations for a trench cut.
A heat hole should be complete or fire should be naturally vented.
____________ should be placed between the heat hole and the trench cut.
indicator holes
An initial trench width of ________ can be sufficient
24”-48”
Lightweight roofs can fail within _______________
5 minutes of structural fire impingement