Chapter 4-6 Flashcards
(22 cards)
What does LOUVERS stand for?
L – Ladders O – Overhaul U – Utilities V – Ventilation E – Entry R – Rescue S – Search
The primary priorities of the first arriving truck company are , , and the occupancy
Ventilation, entering and searching.
For a commercial structure what 3 things should the 1st due truck consider and try to grasp before determining all in or all out?
Extent of forcible entry
Location of fire
Determine if fire is overhead and impending on roof members
Which Trucks assume RAT 1 and RAT 2?
3rd Truck on 1st alarm
1st Truck on 2nd alarm
Who brings the 1st blower and where does it go?
1st truck to the lobby and positioned by RAT 1 (3rd truck) at the base of the fire attack stairwell.
All fire service ladders have a lb weight limit (static load) with a safety factor
750lb
4:1
When placed in a fully erected position they will support up to lbs
3000
For ladder selection commercial occupancies require roughly per story and ’ from floor to sill
12,4
8-10 for residential and 3’ floor to ceiling
How many rungs above the eve of a house should the ladder be?
4
The heat sensor seal will turn from orange or yellow to black when the ladder is exposed to heat degrees or higher
300
Who gives the ladder commands
right foot person
2 methods for entering a room off a ladder.
Head in or head out
for a 2 person throw, leg lock is on the side of each other.
Opposite
Departmental endorsements of vertical ventilation methods are based upon four basic considerations
- Single rafter, double rafters or multiple rafter rolls
- Cutting with or against construction
- Conventional or lightweight roof construction
- One or two saw operation
How many cuts and square feet for a single rafter louver extended against construction? With construction?
8,32
7,32
How deep does the chainsaw go when cutting?
Only as deep as the decking material
What are 4 things to address in the ventilation size up?
building age and type
roof type
hazards
plan
Extending Double rafter louver with and against construction # of cuts and sq ft?
10, 48 ft2
9, 48 ft2
Cut smoke indicator holes or kerf cuts while traveling, approx. - feet apart.
10-12 feet
Three cuts that are used as evaluative tools in determining roof construction type, location of structural members, and fire location and degree of involvement are:
- Inspection Cut
- Smoke Indicator hole
- Kerf cut
Rafter spacing usually “ or ” on center
24, 36
Light weight panelized roofs have 5 main components, what are they?
Purlins, beams, rafters, sheathing, covering
