Chapter 12 - Special Structures and Design Features O Flashcards
- Any building that requires fire fighting on levels above the reach of the department’s equipment, often generally given as a building more than _____ feet in height.
High-rise building / 75
p 340
High rise buildings:
The height is measured from the lowest level of emergency vehicle _________ to the ________ of the highest occupied story.
access / floor
p 340
Early high rise buildings:
These buildings were made possible (and practical) by two developments: ______-______ construction and the __________.
steel-frame / elevator
p 341
Today, high rise buildings are of _____-____________ construction. Often a high rise building will be constructed of a combination of reinforced _________ and a protected ________ frame.
fire-resistive / concrete / steel
p 343
High rise construction:
Typically, model building codes require ___ or ___ hour fire resistance for the structural frame of a high rise building depending on the number of stories and occupancy, and ____ hour fire resistive rating for floor construction.
2 or 3 / 2
p 343
High rise construction
Significant __________ failure in high-rise buildings is extremely rare.
structural
p 343
All model building codes require smokeproof exit enclosures in all stairs serving floors _____ feet or higher. Entrance to these stairways must be made through an open _________ or pressurized ___________.
75 / balcony / vestibule
p 346
Typically, a fire command center is located on the ______ floor or level of fire department ________.
first / access
p 347
In a ________ _____ configuration such building services as elevators, stairwells, and service shafts are grouped in the center of the floor.
central core
p 348
Safety during emergency elevator use:
- Do not use an elevator to travel to the ______ _______ - stay below the ______ ________ according to SOPs.
- Never use an elevator that has been exposed to _______.
- fire floor / fire floor
- water
p 349
- Emergency operating mode for elevators. This mode of operation recalls the car to a certain floor and opens the doors.
Phase 1 Operation
p 350
Phase I operations
Codes contain mandatory provisions for the recall of all passenger elevators with vertical travel greater than _____ feet in the event of fire.
25 feet
p 350
Phase I operation is designed to prevent the deaths of civilians who may find themselves in an elevator that is called to the ______ ________, as happened in high rise fires in the 1970s.
fire floor
p 350
Phase I operation automatically stops all the cars that serve the fire floor if they are moving away from their ________ floor.
terminal (the lobby)
p 350
Phase I operation opens the _____ _______ and keeps them open when the car reaches the recall floor.
car doors
p 350
During Phase I operation, the elevator car’s ___________ ______ and _______ __________ buttons are rendered inoperable so that car occupants who may be unaware of the fire or emergency cannot stop the car anywhere but at the terminal floor.
emergency stop / floor selection
p 350
- Emergency elevator operating mode that allows emergency use of the elevator with certain safeguards and special functions.
Phase II Operation
p 351
Elevators
The codes specify that all new elevators must be equipped for _______ ____ operation.
Phase II
p 351
Elevators
During this phase an elevator becomes essentially a manually operated elevator ?
Phase II operations
p 351
The _________ ______ safety which prevents the doors from closing if there is a person or smoke in the doorway, is disabled during Phase II operations. This is done so the car doors can be closed and the car moved if it inadvertently stops at a _______-_______ floor.
electric eye / smoke-filled
p 351
The ____________ ______ button that was inoperable in Phase I should be operable during Phase II.
emergency stop
p 351
An underground building is defined by some codes as one in which the lowest level used for human occupancy is ____ feet below the main exit that serves that level.
30
p 352
With the current trend toward ____________ (_________) building design, there are many more underground buildings being built or planned.
sustainable (green)
p 352
The difficulty in __________ ______ and _________ is probably the greatest single challenge in controlling fires in underground buildings.
venting heat and smoke
p 352
