Transcript Commercial Vent

Commercial Vent
Commercial Vent
• Engine Company Commercial Vent Training
– Objectives
• Understand why an inspection hole is important.
• Understand the purpose of smoke indicator holes.
• How to utilize the 5 cut center rafter cut method.
• This class is a basic overview to prepare for the
hands on portion of this training.
Commercial Vent
• Engine Company Commercial Vent Training
– Will utilize 1 saw.
– Minimum of two personnel but three is preferred.
• Officer (required)
• Sawyer (required)
• Lookout/Safety (optional but recommended)
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• 5 Points of Inspection Hole
– Determine the roof covering
– Determine the roof decking
– Determine the rafter direction
– Determine conditions directly underneath
– Establish the type of operations that will be
accomplished
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• Inspection Hole
– This is a triangular cut
with each side
approximately 12”.
– The first cut is 45
degrees to an outside
wall.
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Inspection hole
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• Smoke Indicator Hole
– Determine smoke and
heat conditions
underneath the vent
team
– Assists in determining
the location of heat hole
– Only large enough to fit
handle of rubbish hook
into
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• 5 Cut Center Rafter Cut (5 Cut)
– Simple to use and remember.
– Identifies the structural members and allows for
the maximum size of opening between members
for heat hole/strip cut
– The louvers do not fall into the ventilation
opening.
Commercial Vent
• A single
ventilation
hole is a 5 cut.
• When several
5 cuts are put
together they
are considered
“with
construction”
or “against
construction”
“With Construction”
“Against Construction”
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Against Construction
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With Construction
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• Vertically ventilating a commercial roof can be a very
complex task. Utilizing Truck Companies is
recommended when roof operations are needed on
commercial roofs.
• This training provides Engine Companies the
knowledge and skills to vertically vent a commercial
roof when no Truck resources are available or are
delayed.
Commercial Vent
• Hands on training:
– Chalk saw station
– Rafter rolling, smoke indicator, and inspection hole station.
– Full start to finish evolutions that bring it all together.
• Questions? Contact:
– Jason Konieczka
– Ben Hayman
– Jimmy Webb
[email protected]
[email protected]
[email protected]