Building Design And Fire Protection Systems Flashcards
What is the definition of a high rise?
A building over 75’ measured from the ground level to the floor of the highest occupied floor
“New” high-rise buildings were constructed after what year?
Post ‘74
What building type are high-rises?
Type 1- non-combustible
Pre- 60’s have what fire protection systems?
Class 1 dry standpipe (4 or more stories)
Class II hose cabinets (3 or more stories)
Sprinklered basements
How long are type 1 buildings designed to withstand structural damage from fire?
2 hours
In class III standpipes, what is the most common method of controlling water pressure at various floors?
Orifice plates
What is the definition of a combined system?
Sprinkler system is fed by the same riser as the fire department 2.5” outlets
A looped standpipe system is required in buildings over how high?
275’
What is the minimum fire rating of stair shafts and other vertical shafts?
2 hours
What is the minimum rating for fire control rooms?
1 hour
What is the minimum rating for elevator vestibules?
1 hour
New high rises have breakable windows in what locations?
Corners and every 50’
HVAC systems for smoke removal must provide a minimum of?
6 air changes per hour
Generators powering the fire life safety system must be able to operate for how long?
8 hours
What is the size of helipads on high rises?
50’ x 50’
What does the number on the helipad indicate?
The load capacity of the pad in thousands of pounds.
Ex: 10 = 10,000 pound rating
How large must the opening be of the breakable glass every 50’ of a high-rise?
20 square feet
How is the breakable glass in the corners and every 50’ of high-rises identified?
By a 2” laminated decal saying “tempered glass” or “automatic smoke removal system”
Halon 1301 extinguishing systems are particularly dangerous to firefighters because it becomes phosgene at what temperature?
900 degrees
According to book 100, what info is required on the Floor level signs in the stairwells?
Floor level
Stair #
Floors served by the stairwell
Roof access or not
True or False
According to book 100, all buildings over 150’ have building address systems?
True
According to book 100, in a high rise, a stairwell that is not connected to the main stairwells but is used to connect businesses occupying more than 1 floor must be protected from vertical fire spread by what?
Drop down rolling steel doors rated at 2 hours
According to book 100, what may cause oxygen deficiency in a high rise?
Buildings HVAC system is shut down
According to book 100, what may a high rise have instead of tempered breakable glass for ventilation?
Openable windows or mechanical smoke removal systems
According to book 100, in high rise buildings, stairwells that don’t penetrate the roof must have a hatch at least ____ square feet leading to the roof.
20 square feet
According to book 100, in a high rise, public address communications are required in rooms with an occupancy load of how many people?
50 or more
According to book 100, what is the minimum size of fire control rooms?
200 square feet
According to book 100, in a high rise emergency power should operate within how much time of losing power?
10 seconds
According to book 100, horizontal exit corridors are required to be?
Illuminated at all times
According to book 100, exterior fire escapes are required to have wired glass or other protection from windows how many feet from the fire escape?
5 feet to both sides
