High Rise Office Flashcards
Curtain wall bearing or non bearing?
Non bearing
Churning?
Centrifugal pump is running & no water being discharged
Preferred evacuation stairs?
Fire tower; its an enclosed stairway
Between ‘38 & ‘68 fire tower is required?
True
Heavy wgt - medium - lightweight ?
20-23lbs per cubic foot, 10-20, 8-10
Fire dampers are found?
Air enters return air shaft from the plenum on each floor & whenever the air flows through fire rated partition
HVAC non-circulating mode?
- Open outside supply
- Close mixing
- Open exhaust
Auto closure of fire dampers?
Fusible link approx 50F above max temp that would normally be encountered.
Fire pumps ‘38 code; ‘68 code?
Bld over 250(‘38); 300(68)
Bypass valve is on the __ side of the fire pump?
Discharge side. It should be in closed position – stem IN. If open turn clockwise to close. You will lose 25% for 8” riser & 45% for 6” with bypass OPEN
Fire pump found?
Cellar to subcellar
Most high rise bld have two pumps side by side which are connected in __ position?
Parallel
Bld fire pumps shall be capable of delivering their rated capacity at a pressure of __ psi at the highest floor outlet?
50psi at highest floor outlet. Relief valve 15 psi above that
Strategic operating plan:
- Determine fire floor
- Verify fire floor
- Simultaneously or soon as possible begin process of ctl evacuation
- Gain ctl of bld systems hvac, elevators
- Confine/extinguish fire
1st officer establishes ICP, if he leaves before 1st Chief- who does he leave?
Preferably 1st lcc
Who ensures proper staffing of all elevators?
LCU
When should fixed stairwell pressurization systems be augmented?
Should NOT be augmented
Natural vertical ventilation ?
W/o the use of fans. open doors at top & bottom of the stairway once fire is EXTINGUISHED
SAE post:
Floor not serviced by the same bank of elevators as the fire floor & at least 5 floors above fire floor.
FSA?
2 floors below the original fire floor
3rd ladder HRO:
Take stairs other then attk to floor above.
- determine which stairway to be used by occupants for Evacuation & advise icp
- examine ALL stairs for occupants/smoke
- remove all occupants from attk stair for reasonable distance above fire fl
- *If difficulty encountered clearing ATTK stair notify 1st ladder or Fire sector(if established)
3rd ladder - when operations are complete on floor above fire, the officer reports to fire sector either ?
Physically or HT
4th ladder:
- each member extra cylinder
- go to roof. If elevator serves fire fl take it below & walk - use stair other then ATTACK.
- no roof vent till IC
- *primary search top 5 floors
- *logical assignment after roof operations is UPPER floors of elevator bank that serves fire floor
4th ladder: operate under IC until __ is established?
SAE
Greater alarm or special called ladder co after 4th arriving shall rpt to ICP in lobby or if staffed?
LCU. Upon establishment of Staging area outside the bld units will rpt there
Staging area mgr will relay info on units available in staging to IC of if when staffed?
Operations chief or LCU
1st engine will obtain as much info as possible from FSD or surrogate in regard to ?
- Access stairs serving fire floor
- fire (location)
- evacuation implemented
- elevator status
1st engine remain at ICP until ?
Fire floor is verified
When does 2nd engine leave fire area?
Hoseline stretched & operating not to deplete air
3rd/4th engines?
Operate 2nd line on FIRE FLOOR.
- reinforce position of 1st line
- protect position of 1st line
- protect search/evac of fire floor
- contain & confine fire spread prevent it from wrapping around core
Greater alarm engines rpt to. ?
ICP. If staffed LCU. Upon establishment of staging area units will report to staging area OUTSIDE the bld.
