High Rise Office Buildings Flashcards
What years were HI-RI required to have a fire tower?
1938-1968 *does not mean they have them
PS. before 38 some have fire towers
T/F HIRI Building evacuation supervisor is needed when 100 people above/ below street level or less than 400 people entire building.
False
less than 500 people in entire building
T/F HIRI core construction is when building systems are grouped together in the center of the building.
False
it can ALSO be on one of the sides
Center/Side Core
HIRI are curtain walls bearing?
no
non-bearing
What is an elevator door vane?
CONNECTION between elevator car door and hoistaway door.
HIRI what is considered the fire sector?
fire floor and floor above
HIRI what is the typical size and how many stairways?
200x400
6 stairways on lower floors
3 or more on upper floors
PS others have ONLY 2 from lobby to roof
What is the minimum height to be considered a
HIRI?
75 feet
HIRI for primarily for transacting business will fall under what class?
Class E also public/civic services fall under “E”
Limited stock
HIRI falls into 3 types of construction and what are their years?
heavy before 1945
medium 45-68
light after 68
PS just remember the middle #’s
T/F HIRI heavy weight construction u would find plenum?
No plenum
No core
What type of HIRI building has steam heat, no central AC and exterior windows do open?
Before 45 Heavy Weight
HIRI, what type building has lack of compartmentation
Light weight after 68
PS used spray on fire proofing
In light weight HIRI buildings there is a major flaw what is it?
6”-12” space in exterior walls which requires add.
fire stopping.
Where would u find extensive plenums in HIRI?
Light weight (after 68) and lack fire stopping
What type building would u find extensive core construction?
HIRI after 68. Light weight
HIRI. HVAC has 2 general categories?
Central- most common,air to more than 1fl.
Non-Central-serves the floor where equipment is
HVAC are divided into 3 sub-systems?
processing equipment
supply
return
On the HVAC where would u find the smoke detectors?
on the returns
HVAC. What is the room called where they process the air?
MER
Mechanical Equipment Room
HIRI Will we find one HVAC unit serving the whole building?
NO
We usually find a group # of HVAC’S each supplying a group of floors (supply zones)
HIRI. There are 4 places u find Fire Dampers?
supply ducts meet supply shaft
pass through a rated partition
air enters RETURN from plenum on each FL.
RETURN air passes a rated partition
Is return air in the plenum ducted?
no
If the HVAC is not turned off automatically, manually shut which side the supply or return?
Both
T/F In some HVAC systems the smoke detectors only shut down the return side?
False supply side
u have to manually shut the return
Place the HVAC in the non circulating mode:
_____ all outside air dampers.
_____ all mixing valves
_____ all exhaust dampers
Open
Close
Open
PS everything to the outside we open up
T/F After we determine the fire floor turn on the SUPPLY to HVAC, to the building except the floor where the fire is?
False
do not turn on the FIRE AREA.
? i assume they mean the floor above also?
HVAC has fusible links that are rated approx. ____
above Max normal temps.
50 degrees
T/F HVAC Once a fire damper closes it must be Manually opened.
True
T/F Local Law #5 requires product of combustion ionization device OR a COMBO of approved smoke detecting device AND fixed temp thermostatic device.
true
PS these devices are located on the return on each fl. activation shall stop air into and leaving floor
Manual fire pumps for the1938 building code the height would have to be?
Over 250’
PS 1968 over 300’
pumps got better with time that is why they go higher in the later years!
Pump rooms are normally located where?
on the Lowest floor
cellar or sub-cellar
Pump room bypass is located on what side of the fire pump?
Discharge side
AS we know bypass valve should be closed position, if not still start pumps.
on a 8” riser loss would be ____%
on a 6” riser loss would be ____%
25%
45%
These #’s are with bypass open
Control Cabinet for fire pump are in the shape of a large cube, size varies from ________.
6x6x6x 8x8x8x (older models)
How do u start fire pumps?
PS if pumps fail to start then use Emergency Power Lever. push or pull
ACRO: kansas city starters suck close KNIFE switch to "ON" position close CIRCUIT breaker& power on push START button& pump on move SELECTOR LEVEL
Recommended pump pressures start at?
150 psi for floors 1-10 and increase by 50psi every 10 floors
PS the ECC will be the member operating pumps if no engineer
Pump capacity is usually_____ and most have 2 pumps that are connected in the parallel position.
750gpm
PS keep both pumps around the same pressure
T/F Most buildings have 1 manual and 1 automatic fire pump?
False
Most have 2 manual.
Some have 1 manual 1 automatic
T/F If there is 2 manual pumps start both?
true
each will have its own control panel
Fire pumps should be able to deliver a pressure of
____ psi at the highest floor outlet?
50psi
Fire pump relief valve is required to be set to ____psi above the highest floor outlet.
15 psi
Primary water supply in HIRI is?
in most operations will be FD engines
In HIRI what is the Rule of Thumb when talking about water supply?
separate engine supplying system for each handline in operation
HIRI CFR engine takes what tools?
All CFR equipment and forcible entry tools
T/F A 2nd alarm is transmitted for visible fire OR smoke coming through the skin of the building or when a serious fire verified?
true
What is the location in a HIRI of these ladders 1st 2nd 3rd 4th
1st/2nd fire fl
3rd floor above
4th operate on upper floors/search attack stairs
HIRI What is the preferred method of evacuation of people?
Fire tower if they have one.
HIRI 2nd line is used to?
reinforce/protect 1st line.
protect search/evacuate fire fl.
contain/confine/prevent fire from wrapping around core.
