Taxpayer1 Flashcards
At taxpayers the stability of masonry walls depends on the being concentrated in what direction through the wall?
Vertical direction
What are 3 reasons you give a second alarm at a taxpayer ?
Store fire with extension to cockloft
Store fire with extension to a exposure
An advanced fire in the cellar
At 1000 degrees a 100 ft steel I beam will expand ?
9 1/2 inches
At 970 degrees a 50 ft long steel I beam will expand how much?
4 inches
On average in fire conditions how long does cast iron columns collapse?
30 minutes
Which is more serious if it collapses a girder or a column?
Column more serious
Which is worst to collapse a bearing wall or a column?
Bearing wall worst
Where are outside cellar stairs usually found at taxpayers?
In the rear of the bldg
When are roll down gates at a fire more dangerous when there up or down?
Up all weight in one place
How would you secure a roll down gate after you have gotten it open at a fire?
Clamping vise grip pliers in the track under the roller or use a ladder to hold up gate
A waring sign of a collapse potential at a taxpayer would be a heavy body of fire burning out of control for _____ minutes.
20 minutes
At a taxpayer fire if you see walls leaking smoke or water what would this indicate to you?
Possibly collapse warning sign
How much does 1 cubic foot of brick weight?
100 pounds
Inability to make successful headway against a heavy fire conditions within how long in the fire would be a possible indicator of a collapse?
20 minutes
When you have a fire in a smoke shop what is the recommended method of fighting the fire?
2 1/2 consider knocking down the fire from the sidewalk first
What are three basic factors necessary for a back draft?
Combustibles oxygen heat
Can a decorative metal cornice be removed on older taxpayers built in the 1920’s ?
Yes
What’s the most prevalent type of taxpayers ?
1920-1960
Can the cornice of a taxpayer built between 1920- 1960 be removed ?
Most cases will not provide access to the cockloft
What is the size of a cockloft in a taxpayer?
4” to more than 6 ft
What type of truss is prevalent in modern taxpayer construction?
LW parallel chord truss
Which chord of the bowstring truss was mis calculated?
Bottom chord
The bowstring truss was miscalculated by how much?
Miscalculated by 60%
Bottom chord
Roofs may only support 40% of weight originally calculated for
The bottom chords of bow string truss roofs have inadequate ?
Tensile strength
What kind of load on a bowstring truss roof was miscalculated ?
Concentrated load.
Made by snow drifts in one area
When a bow string truss roof fails does fire have to be involved in it?
No they have failed with no fire impingement
Do would BWSTG truss roofs give warning signs before failing?
No fail without warning
Open web steel joists found in modern taxpayers , what is there fire resistance rating?
0 they have no fire resistance rating
Open web steel joists can span up ____ ft.
60 ft
Unprotected open web steel joists are particularly vulnerable to elevated temps of a fire and may collapse after how long?
5-10 minutes
When you pull up to a taxpayer and have dense black smoke pushing out what is this a sign of?
Back draft
What are 3 colors of smoke associated with a back draft?
Dirty brown
Yellow brown
Gray yellow
A room or fire area requires only ____ percent of its space to contain the explosive mixture for the entire area to explode. ( back draft)
25%
What is the most effective way to protect members from a back draft when entering the fire bldg?
Open roof or area over fire
What is a alternative method other than venting the roof to protect members from a back draft?
Flanking using hose streams
In taxpayers where do most fires originate?
In the rear of the first floor where utilities and storage are located
What is mechanical vent?
Using fans
What is natural vent?
Opening made in the fire bldg
What size roof cut should be made in taxpayers?
8x8
To cut a effective hole on the roof of a taxpayer what do we need?
4 members
2 saws
Who should consider calling additional ladder companies to the scene of a taxpayer operations?
First arriving officer should initiate this
T or F
Roof sector supervisor has to be a chief officer?
False
A engine company that’s going to use the line to vent at a taxpayer fire should do what?
Use a fog tip to the width of the opening 4-5 ft back
At taxpayer fires nothing effects the outcome of an operation as what?
Ventilation
At a taxpayer what is a critical factor when deciding where to cut the roof?
The wind
Should be at your back
When should a chief officer be assigned to the roof of a taxpayer ?
When cutting is critical
For a cellar fire at a taxpayer where should the floor be cut to vent the cellar?
As near to windows as possible and away from doorways and isles
Can members operate on the roof of bowstring truss for a content fire?
No under no circumstances
What is our primary tactical consideration at vacant bldg fires?
Exterior operation
When timber trusses are involved in fire of BWSTG truss roof what’s our tactical procedure?
Exterior ops
How do we check to see if fire has involved the truss space of a BWSTG roof?
Use thermal imaging camera.
Cut a triangle hole in the sloping hip section of the roof either the front or rear from a TL bucket
Which walls are we worried about for BWSTG truss roof collapse?
Front and rear
When should the 8x8 roof cut of at a taxpayer be pulled?
After the entire cut is done
Never allow 4x4 cut to be pulled first
At a store fire in a taxpayer where is the life hazard greates?
In the rear of the store
Where does the first line go in a store fire taxpayer ?
Stretch a line into the involved store
At a taxpayer store fire where does the second engine operate
- Assist first engine with stretch
- If the sprinkler has not already already been supplied supply it
- Stretch a back up line for the first engine
At a store fire on a taxpayer where does the third engine operate?
Ensures sprinkler hook up
If you pull up first to a taxpayer fire where the fire has control of the cockloft and you have a occupied bldg attached where do you stretch the first line?
Into the exposure to protect it
Where does second engine company go if u have a store fire on a taxpayer with the cockloft fully involved ?
Assist with first line stretch
Stretch a line to another exposure
At a cellar fire in a taxpayer who shuts the utilities ?
First ladder
Can the the first ladder officer order the plate glass windows to be vented in a taxpayer cellar fire?
Yes
A cellar fire in a taxpayer , where does the first LCC operate?
Joins the inside team
Where would the second ladder company operate at a cellar fire in a taxpayer ?
Adjoining stores and cellars
2 nd roof man at a cellar fire in a taxpayer goes where and brings what ?
To the roof via a portable ladder takes saw with him
Where does the second LCC go at a store cellar fire ?
Joins the inside team
What should be our emphasis on the roof of a taxpayer that fire has seriously involved a major portion of the roof?
Vent holes not trenching
Can we use a trench cut at a taxpayer fire as a defensive measure ?
Yes
At a taxpayer fire when we have 2 lines operating on a advanced fire in a store what should we call for?
Extra engine and truck
When would you transmit a second alarm for a taxpayer fire?
Extension to cockloft
Extension to adjoining occupancy
Advanced fire in the cellar
A properly place TL can over a bldg with a frontage of _____?
100 ft
A minimum of ___ portable ladders should be placed on the front of a taxpayer?
2
After an initial attack of the fire at a taxpayer can we reduce the lines down to 1 3/4?
Yes we can
Can a 1 3/4 line be used in exposers of taxpayer ?
Yes when compatible with fire conditions
At taxpayer fires can we operate a line into a trench?
Yes
At a cellar fire that we can’t get with hand lines what is our last resort?
Flood the first floor with Stang nozzle or TL pipe
Cellar fire in a taxpayer what’s the first engine company doing?
Stretch first line into occupancy above the fire to prevent vertical extension
At a cellar fire in a taxpayer what is the second engine doing?
Assist first engine with line
If sprinklered and first engine didn’t supply hook up to sprinkler
Than last stretch a back up line
Cellar fire at a taxpayer what’s the third engines responsibilities ?
Ensure sprinkler system is supplied
At a store fire in a taxpayer who must order the venting of the show windows ?
The IC
What tools does first roof man bring to a store/cockloft fire?
Goes to roof via portable ladder
Brings saw and hook
Where does the first LCC operate a store fire in a taxpayer ?
Joins forcible entry team
Where does the first LCC operate at a store in a taxpayer if it extends to the cockloft?
Goes to the roof to assist roof man
Where does the second ladder co operate at a store fire in a taxpayer ?
Force entry into adjoining stores
At a store fire in a taxpayer where does the second roof man go?
To the roof via a second portable ladder
Brings a saw and iron OR ax
At a taxpayer fire what are the OV tools?
Maul and Halligan
Truck companies other than 1 st and 2nd should report into to taxpayer fires with what?
10 & 12 ft hooks and there normal tools
