Chapter 16

Question 1

Reinforced concrete structures can be precast or cast in place concrete structures. Incorrect
A. Although it takes 27 days for concrete to reach its max strength, within 48 hrs concrete flrs have enough strength to enable wood formwork below to be removed and reconstructed above
B. Wood formwork removed, bracing remains below freshly poured concrete flrs for support, and portable steel jacks or timber columns will continue to support several flrs below
C. Construction engineers state that w/in 24 hrs of pouring, entire concrete fl can collapse on FF’s if wood formwork below has been destroyed by fire
D. If there is a small fire in wooden formwork used to support flrs in a cast in place structure, it can be extinguished w/a single HL attack from a wooden ladder through the elevator shaft

Answer 1

D Will not be able to extinguish w/HL. Outside, defensive ops necessary using LCS

Question 2

In buildings under construction, workers often set up small offices in and around the construction site called shanties. In regards to the shanties, all of the following statements are correct except?
A: Shanties are constructed of sheetrock or plywood
B: Shanties are found around the perimeter and sometimes even inside the building
C: Shanties are required to be non-combustible, at least 30 feet away from the building under construction, and not grouped together
D: The number one ignition source for fires in shanties is the an electric overload of computers and other electronic devices

Answer 2

D Portable heaters are the number one ignition source…illegal smoking, matches, and careless cooking are also considered ignition sources

Question 3

If a bldg under construction reaches a certain height, a standpipe system is req’d to be installed in case of fire. Incorrect concerning standpipes at these bldgs
A: Any dismantled standpipe system found between the top of the standpipe and the last floor constructed should be reported to the IC
B: If the top of the standpipe is not fitted with a cap or seal, there still may be enough pressure for an effective firefighting stream in case of a fire
C: Outlet valves may be installed in the open position
D: The entire first alarm assignment may have to be diverted to search for and shut open valves

Answer 3

B Will never be enough pressure developed for an effective firefighting stream…..also if units report all valves closed and still no water to the upper floors, someone should check the cellar outlet valve

Question 4

The hoist car designed for construction workers has?
Select one or more:
a. Operating controls outside the car
b. A bell system
c. One or two supporting cables
d. Safety brakes

Answer 4

D Safety brakes

Ch 16 pg 87, A, C, D-are the material + Equipment Car

Question 5

From the list below choose an incorrect statement about crane collapse in these buildings
A: Crane collapse happens most often when the building is involved in fire
B: The worst type of incident in buildings under construction is when the crane fails and collapses damaging both the building being worked on and adjacent buildings
C: Collapse buildings can go on fire due to broken gas pipes and electric sparks
D: If the building is on fire and exposing the crane a master stream shall be used to protect the crane operator

Answer 5

A When the crane is overloaded, moved, assembled, or disassembled…NOT DURING FIRES
ch 16….also check out D- not a handline

Question 6

Hoist elevators at a bldg under construction incorrect
A: Hoists elevators are built on the outside of a building to carry construction workers and their equipment to the upper floors
B: The equipment and workers elevators are designed the same and either one can be used during a fire
C: The hoist elevator used for the workers have built in safety brakes to stop the car from free falling
D: FF’s should not use the hoist elevator designed for equipment even if the suggested by the workers or a watchman

Answer 6

B
Only use the hoist elevator designed for the workers
ch 16