Ch 19 Buildings Under Construction, Renovation and Demolition Flashcards
There are two types of hoist on the job site what are they? Pg 484
One for people and one for materials and equipment only
Older buildings undergoing demolition pose an extra hazard to fire fighters asbestos abatement. This is common before what year? Pg 485
1975
OS&Y are found where? Pg 486
150 ft of building height (every 15 floors in residential buildings, every 10-12 in commercial buildings
What are tilt slab buildings? Pg 487
In which huge slabs of poured concrete are erected as the exterior walls.
When fireproof coatings or membranes are missing what happens? Pg 487
Steel may be exposed to rapid rises in temperature, which can lead to failure.
One of the most dangerous buildings in the US to fight a fire is what? Pg 491
Vacant building
The firefighter death rate at a vacant building fireis more than how many more than a occupied residential building? Pg 491
3-5 times
A empty square near the entrance means what? Pg 492
The building is of normal structure stability
A box with a line drawn diagonally through it means what? Pg 492
Some Serious hazard, such as holes in the floor and signals that all operation should be conducted from the exterior if possible.
A building marked with an X means what? Pg 492-493
Building with severe hazards
What is used by the FDNY to mark vacant buildings? p. 492
Painted square
How many floors may need to be laddered if the fire occurs at a construction site after working hours?
p. 483
One
Where should the stream be applied first when battling fire in a building under construction? p. 483
Upper floor
Which fire protection system should be present within two floors of the highest level under construction?
p. 486
Standpipe riser and outlets
What is the stream of choice at buildings under construction when the fire can be reached? p. 482
Elevated platform
What is being removed from the concrete that causes spalling? p. 490
Water
Which is NOT correct about buildings under construction? p. 482
Power is left on overnight to allow for security lighting
Which part of the hung ceiling often is not installed until much of the rest of the construction is completed and the occupants have begun moving in?
p. 487
Tiles
How many more times the number of firefighter deaths occur in vacant buildings than in occupied residential
buildings? p. 491
3-5 times
What is done to protect the tensioning cables once the concrete has hardened and the cable ends are cut off? p. 488
Concrete is poured over the ends
Approximately what amount of time must pass before the poured-in-place reinforced concrete building can support its own weight? p. 488
48 hours
What should be done when fighting fires in areas where LP cylinders are present? p. 485
Use large streams from shielded locations
What type of strength do the cables embedded in pretensioned concrete provide? p. 488
Tensile
What is the easiest way to determine if a hoist is for transporting people at a construction site? p. 484
Controls inside the car
What type of standpipe system will be present in most buildings under construction, at least temporarily?
p. 486
Nonautomatic dry
Approximately how many days does it take concrete to reach its greatest load-carrying capacity? p. 489
28
What distance are the 4X4 posts placed in each direction to support the weight of the concrete in poured-in-place reinforced concrete buildings? p. 489
4 feet
At what interval are the riser sectional valves usually found in commercial buildings? p. 486
10-12 floors
What is seen on a building that is vacant and has severe hazards? p. 492-493
Square with an “X” in it
What type of force is being exerted on the wall when it is load-bearing?
p. 487
Compressive
Which is one of the most dangerous buildings to operate in in the United States? p. 491
Vacant buildings
In which type of building is the most serious collapse threat found while it is under construction? p. 488
Poured-in-place reinforced concrete
Which outlet should fire-arriving units test for water at a building under construction or demolition? p. 486
First floor
High-rises built before what year will have an added hazard of asbestos exposure? p. 485
1975
