Book 100 Chpt. 4-6

Question 1

What two basic types of high rise buildings?

Answer 1

Residential or commercial

Question 2

What general characteristics do residential high rise buildings have?

Answer 2

Center-hall Corridors, numerous interior compartments and 24 hour occupancy

Question 3

What general characteristics do commercial high-rise buildings have?

Answer 3

Center core construction, circuit corridors around the core, larger and more open spaces. Larger population but only during the day

Question 4

A high-rise buildings at least how many feet tall?

Answer 4

75 feet

Question 5

How is that measured?

Answer 5

Ground level access to floor level of highest floor intended for occupant use

Question 6

What ten features do high rise buildings that were constructed since ‘74 have?

Answer 6

Completely sprinklered,
Class lll combination standpipe system (with an on site water supply and pump)
At least two means of egress from each floor
Local fire warning system
Building communication system
Building control station
Fire department lockbox
Standby and emergency power systems
An emergency helicopter landing pad on roof
Stairwell numbering system

Question 7

What size outlets are on the class III system?

Answer 7

All our 2 1/2”with a 1 1/2” reducer

Question 8

What will be found in the lock box?

Answer 8

Keys to elevators, fire alarm system and to gain access to floors from stairwell, and maybe building inventory plans

Question 9

What six features do high-rise buildings that were constructed before 1974 have?

Answer 9

At least two approved exits for each floor,
Enclosed stairwells (except a few, very old)
Some type of smoke control
Floor level numbering signs at each floor and stairwell
Some type of standpipe system
A building communication system (if over 150 feet)

Question 10

What are some of the types of smoke control? For buildings constructed before 1974

Answer 10

Openable windows
Tempered break out glass panels on at least two sides
HVAC smoke exhaust system

Question 11

What info is required on the floor level signs in the stairwell at each floor?

Answer 11

Floor level
Stair number
Floors served by the stairs
Roof access or not

Question 12

What are the types of water systems found on pre-60 high-rises?

Answer 12

Class l dry (2 1/2”)

Class ll wet (1 1/2”)

Question 13

1960-1974 and over 150 feet in height? Type of water system

Answer 13

Class III combination system

Question 14

1960-1974 and less than 150’ water system?

Answer 14

Same as pre-60

Question 15

Will a building built before 1974 have a building address system if over 150 feet in height?

Answer 15

Yes

Question 16

How many drills per year are required for a high-rise buildings?

Answer 16

One (hotels exempt)

Question 17

Our hotel employees exempt from the annual training?

Answer 17

No

Question 18

Each high-rise must have one person to serve as a what?

Answer 18

Fire safety director

Question 19

The fire safety director shall maintain a list of what?

Answer 19

Physically challenged individuals In the building

Question 20

What are the two highest priorities during high-rise operations?

Answer 20

Fire attack and evacuation

Question 21

High-rise buildings in the city are designed with what fire rating between floors and a vertical openings?

Answer 21

2 hours

Question 22

What are the three dangers to building occupants in a high-rise fire?

Answer 22

Fire, panic, smoke

Question 23

What has been shown to be the most effective means of saving lives and facilitating Rescue in a high-rise fire emergency?

Answer 23

Aggressive attack on the fire

Question 24

In the event of a working fire, which stairwells should be pressurized with blowers?

Answer 24

All access stairwells

Question 25

Some high-rise buildings in Los Angeles house more than how many people during peak hours?

Answer 25

5000

Question 26

A minimum for a working fire, Occupants from which floors must be relocated or evacuated?

Answer 26

Fire floor, 2 floors above and 2 floors below (5)total floors

Question 27

What document is required for each commercial high-rise occupancy?

Answer 27

Building emergency plan

Question 28

Our success in control in the fire and protecting the occupants will depend on our ability to what?

Answer 28

Control the stairwells

Question 29

If firefighters cannot move in the stairwell due to the press of occupants evacuating, what other option may be used?

Answer 29

The use of airborne engine company deployed to the roof

Question 30

What two designations shall be given to respective stairwells?

Answer 30

Fire attack stairwell | Evacuation stairwell

Question 31

Who may be utilized to handle all calls from occupants in the building to MFC?

Answer 31

Communication technical specialist

Question 32

At what point can the fire attack team initiate tactical operations?

Answer 32

After a size up has been made and apparatus has been safely position

Question 33

What is the only practical means of moving personnel and equipment? In a high-rise fire

Answer 33

The Buildings stairwell at ground level

Question 34

What shall the additional fire attack team acquire from the lock box before going to loft?

Answer 34

One set of keys and a building inventory sheets

Question 35

Keys provided should allow access to what?

Answer 35

Recall elevators and unlock the stairwell at ground level and at all floors

Question 36

What telephone number should be obtained before going to loft?

Answer 36

Number to Fire control room or Lobby

Question 37

Once going aloft, how shall Command be maintained?

Answer 37

By passing to the next engine on scene or to a higher ranking officer if on scene

Question 38

Who sets the pace for the fire attack teams ascent?

Answer 38

The officer in charge

Question 39

What have been proven to be the safest and most reliable route to the fire floor?

Answer 39

Stairwells

Question 40

What are scissor type stairwells?

Answer 40

Stairwells that may skip floors or may exit at opposite end of building

Question 41

What is the primary purpose of stairwell pressurization, wether done by the buildings systems or by the fire department?

Answer 41

To greatly reduce heat, smoke and products of combustion from entering the stair shaft when a stairwell door to the fire floor is opened

Question 42

What other type of blowers have proven beneficial at high rise fires?

Answer 42

Water pressure driven blowers (typhoon)

Question 43

Why are they beneficial? (Typhoon blower)

Answer 43

They do not emit carbon monoxide

Question 44

How can stairwell doors be distinguished from other doors on the outside of buildings?

Answer 44

By their double door width and key cylinder lock

Question 45

What other mechanism may hold the door closed?

Answer 45

A magnetic device

Question 46

How many pounds of pressure may be needed to overcome the magnetic holding device?

Answer 46

25 pounds

Question 47

What is the normal rate of ascension for fully equipped fire attacked teams utilizing stairwells?

Answer 47

One minute per floor

Question 48

If the fire is reported on or below the 6th floor, what method of ascent shall be used?

Answer 48

Stairwells

Question 49

At what point maybe a elevator without emergency service or a freight elevator being used?

Answer 49

Once determined safe by fire personnel on fire floor and approved by the IC

Question 50

Prior to entering the elevator, what shall be determined?

Answer 50

The location of the stairwell is in relation to the elevator

Question 51

What is the maximum number of personnel that can go on Aloft in the elevator?

Answer 51

6

Question 52

Assessment of conditions found in the stairwell should be related to the IC or incoming companies every how many floors?

Answer 52

4-5

Question 53

When elevators are used, precautionary stops shall be made every how many floors?

Answer 53

5

Question 54

Once you have located the fire floor, what must be done before opening in the stairwell door?

Answer 54

Check floor above to determine vertical extension, potential hazards, or available openings

Question 55

When preparing to advance two lines simultaneously, how should they be prepared?

Answer 55

Flick the larger lined up and the smaller line down

Question 56

Standpipe pressure in a high-rise is controlled by what three means?

Answer 56

Pressure regulating devices, pressure restricting devices, and orifice plates

Question 57

What is the normal set limit for pressure regulating devices?

Answer 57

300 GPM

Question 58

Orifice plates are designed to supply what GPM?

Answer 58

200 GPM

Question 59

If a gated wye is part of your hose lay, how must it be addressed?

Answer 59

It must be attended or strapped open to prevent inadvertent closure

Question 60

When a line is connected to an outlet with an orifice plate, what must be done?

Answer 60

Remove orifice plate and have a member remain at the outlet

Question 61

If an orifice plate cannot be removed, what shall not be done?

Answer 61

Completely shut off nozzle and

Question 62

Why?

Answer 62

A complete shut off at the nozzle may raise the pressure in the line to the much higher static pressure and the hose could rupture

Question 63

The fire attack team effort’s should be directed to what?

Answer 63

Protect the hallways Corredor’s, stairs, elevators and other vertical openings

Question 64

If it is necessary to reposition your hand line for a more affective attack, how shall this be accomplished?

Answer 64

Go down a floor, cross to the other side and reconnect your lines. Keep incident command informed

Question 65

How can wrap around potential he be prevented?

Answer 65

By coordinating two hose lines

Question 66

Which member(s) must be alert for fire above suspended ceilings, Backdraft and flashover conditions?

Answer 66

Each member on the fire floor and communicate with other companies on the floor

Question 67

An area above the ceiling is sometimes referred to as what, if part of the HVAC system?

Answer 67

Plenum space (for returning air)

Question 68

What must separate open stairwells interconnecting floors have?

Answer 68

Two hour protection which is accomplished by drop down rolling steel doors

Question 69

What is a good indicator that a building may have separate interconnecting stairwells?

Answer 69

If in the lobby you notice that one business occupies two or more consecutive floors

Question 70

What temperature can be a flashover point in a high-rise?

Answer 70

As low as 700°F

Question 71

What are indicators of a flash over?

Answer 71

A free burning fire A cumulative heat/smoke in upper part of the room Increased in smoke and density (bank down) Fire flickering in the ceiling smoke

Question 72

What may cause oxygen deficiency in a floor on a high-rise?

Answer 72

It’s the buildings HVAC system is shut down

Question 73

Stairwells in buildings constructed after what year are required to employees stairwell ventilation system?

Answer 73

1974

Question 74

The fans must provide at least how many CFM?

Answer 74

50 ft.³ per minute

Question 75

What is the maximum pounds of pressure they can place in interior doors?

Answer 75

25 pounds

Question 76

What is positive pressure in the stairwell designed to prevent?

Answer 76

Smoke from entering the stairwell from the fire floor

Question 77

What does a Sealed building refer to?

Answer 77

External glass panels not openable

Question 78

Smoke movement in a high-rise windows HVAC can be affected by what?

Answer 78

``` Construction Mushrooming and stratification Doors Windows HVAC systems Stairwells Emergency smoke control system ```

Question 79

What is the largest difference between mushrooming and stratification?

Answer 79

Stratification is caused by the products cooling as they arise, preventing further rising. Mushrooming is caused by products that have risen as high as possible and now our banking down

Question 80

Windows on a pre-60 high-rise are what?

Answer 80

Openable

Question 81

Post 60?

Answer 81

Tempered glass on at least two sides of the building at corners and 50 feet intervals or less

Question 82

Post 74?

Answer 82

Tempered glass on all sides of the building. At corners and 50 foot intervals or less

Question 83

How are tempered glass windows identified?

Answer 83

3 inch luminous or reflective decals in a lower corner which indicate they are fire department use

Question 84

What may the building have instead of tempered glass to satisfy the requirement?

Answer 84

Openable windows or mechanical smoke removal systems

Question 85

Post 1996?

Answer 85

Requirement of smoke control systems has illuminated the requirement of installation of the tempered glass

Question 86

What shall be done before breaking any glass?

Answer 86

Radio notification shall be made indicating the need and intention to break glass, and the specific side of the building

Question 87

HVAC systems should be left alone and in the on position unless what?

Answer 87

They are contributing to the spread of fire or smoke throughout the building

Question 88

For ventilation purposes, stairwells can be placed into work two categories?

Answer 88

Open to interior of building, W/roof access | Open to exterior of building W/roof access

Question 89

Ventilation efforts in stairwell that open to interior of the building with roof access will need What means to ventilate?

Answer 89

Mechanical means other than utilizing natural airflow only

Question 90

On stairwells that open to exterior with the roof access, simply opening a door at the bottom and a roof level can’t create natural vertical air currents up to what speed?

Answer 90

3-6mph

Question 91

What advantages do you water turbine driven positive pressure vent to later’s typhoon blower I have over a gas engine powered blowers?

Answer 91

Much less noise, no carbon monoxide and proven twice the CFM

Question 92

Buildings built after 1974 are required to employ an emergency smoke control system which is comprised of what components?

Answer 92

Pressurize stairwell mechanical smoke removal system temper glass or openable windows

Question 93

Who shall be responsible to ensure stairwells are pressurized?

Answer 93

Lobby control

Question 94

When pressurizing in stairwell utilizing blowers, how should they be placed?

Answer 94

4 to 6 feet back from doorway | Angled back at least 5°F In a “V”configuration rather than in series

Question 95

If windows must be opened/broken for cross ventilation, which side of the building should be used?

Answer 95

Leeward side. Hose line must be in place

Question 96

Cross ventilation is affective up to how many floors in the high-rise building?

Answer 96

25 floors

Question 97

If cross ventilation is needed above 25 floors, what may be used?

Answer 97

An additional blower in the pressurized shaft