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Flashcards in 7 Means Of Egress Deck (85):

A continuous and unobstructed path of vertical and horizontal egress exit travel from any occupied point in a building or structure to a public way



A means of egress must terminate where

In a public way or area of refuge


A public way must have a minimum width and height of

10 feet


True/false model code's permit escalators elevators or moving walkways as part of a means of egress

False they are not allowed as part of a means of egress


Exit access leads from an occupied portion of a building or structure to

The exit


Examples of exit access

Corridor leading to exit opening
Isle with an assembly occupancy that is designed to accommodate and conduct people to exit
Pathway leading from an inside space to an exit
Un enclosed ramp or stairs
Occupied room or space


Examples of exits include

Door at ground level that leads directly to outside
Exit passageway to outside
Horizontal exit
Stairway enclosed by fire resistance rated wall and soft closing fire doors


An exit is

The transition point between exit access and exit discharge. Usually an exit door on exterior wall


Exit passageways are designed to connect and interior exit stair to

And exit door on the exterior of the structure


And exit passageway must be wide enough to accommodate

A total capacity of all exits that discharge through it


Exits that are commonly used in high-rise buildings and hospitals as a means of passing through a fire barrier wall that separates to fire compartments in a structure

Horizontal exit


Two basic types of horizontal exits are

Egress from one building to refuge area in another building
Egress through fire barrier to area of refuge in the same building


Horizontal exits require firewalls or fire barrier walls with at least a fire resistance rating of

Two hours


Fire resistance rating for a fire door in a horizontal exit

1.5 hours


Horizontal exits may be substituted for other exits if they do not compose more than what of the total exit capacity of the building



The exit discharge exists between the termination of the exit point and

The public way


Two examples of exit discharges

Exterior walkway alongside structure from exit to public way
Privately owned drive or Ally connecting exit to public way


Passive components for a means of egress provide two benefits to occupants

Separate occupants from fire during escape.
Consist of lighting and signs to guide her direct occupants to exit or refuge


Two of the most important life safety functions of a door are too

Act as barrier to the movement of fire and smoke.
Serve as component of means of egress system


Each door opening must be wide enough to accommodate the number of people expected to travel through an emergency. In new buildings model code requires the doors serving as a component to a means of egress be at least how wide

36-48 inches, provide minimum 32 inches of clear unobstructed width


Doors that open into corridors or hallways must be placed so that the door does not obstruct more than how much of the required exit with during any of its point of swing

Does not obstruct more than one half of exit width


Panic hardware should release by applying a force no more than

15 pounds


The door with panic hardware should be able to be set in motion by applying a force of not more than

30 pounds


Doors that are electronically locked or have keypads an alarm devices will open in the event of a power locks. True false



Wall finish, paint wallpaper fabric, is dictated based on occupancy group in the walls to an exit pathway. What classes are allowed of interior finish in exit or exit access corridors

Class a, 0-25. Class B 26-75.


When the ceiling is part of the fire resistance rated walls the ceiling must have what fire rating

The same fire rating as the walls


Exit access stairways must be at least 44 inches wide if the occupant load of all floors served by the stairway is

More than 50


If the occupant load of all floors served by the stairway of an exit excess is less than 50 people the stairway must be at least how wide

36 inches


Exit access stairs must have landings provided so that no flight of stairs are greater than how long

12 feet


Stairways that are exceptionally wide may be required to have

Intermediate handrails in the middle of the stairs


The construction that encloses the exit must have at least one fire resistance rating when the exit connects three stories or less

One hour minimum


When the exit connects for more stories the separating construction must have a fire resistance rating of at least

Two hours


Any opening in the exit stairs must be protected by

A self-closing fire resistance rating exit door


The door to a stairway must have a one hour reading when used in an enclosure rated at what

One hour


On the stairway enclosure is two hour rated enclosure, what fire rating must the door have

At least 1.5 hour rating


Ramps must be at least how wide

44 inches wide


Handicap ramps must have a maximum slope of

1 inch rise in 12 inches distance
1'in12' is the same


The maximum length of the handicap ramp without a landing is

30 feet


Exterior fire escape stairs may not be used as a means of egress and new construction. When found an old construction these stairs may constitute how much of the required means of egress

One half of required means of egress


Fire escape slides also called slidescapes, must be of an approved type and rated at one exit unit per slide with a rated capacity of how many persons

60 persons


Any required exit illumination must be arranged so that the failure of any single lighting unit, such as a defective light bulb, will not leave

Any area in darkness


True/false battery operated units for illumination may be used for primary exit illumination

battery operated units may not be used for primary illumination but may be used as back up


Floors must be illuminated with emergency lighting not less than

1 foot candle at floor level


Illuminated exit signs must be positioned so that in no point in the exit access

Is no more than 100 feet from the nearest visible sign


Letters on exit signs must be at least how high

6 inches


For a illuminated exit signs the principal strokes of the letters must be at least how wide

3/4 inch wide


Floor level emergency signs are used only when

Used in addition to standard ceiling level signs


Floor level proximity exit signs are used for what reason

For crawling occupants to identify exits through smoke


Bottom of a floor proximity exit signs must be how far above the floor surface

6-8 inches


Auxiliary power units, such as batteries or generators, required to be tested how frequently with the observation of an inspector

Monthly and annual test of the system


Total number of persons who may occupy a building or portion of it at one time

Occupant load


The approved maximum occupancy load for a structure or room must be visible and legible, and posted on a sign near

Near the entry to the structure or area used for assembly


The formula for determining the occupant load of a structure room or area is

Occupant load= net floor area/Area per person factor


That floor area of an area of assembly or structure is determined by

Multiplying length by with


What is the area per person factor of a nightclub with on concentrated tables and chairs

15 ft.²


The occupant load of a nightclub that is 15,000 ft.² in size, and an area per person factor of 15 ft.²

1000 people


Maximum allowable area per person in a parking garage,

200 ft.²


For a building or portion of a building that has more than one use, multiuse occupancy, the occupant load is determined by

The use that allows for the largest number of persons to occupy the building


For a building or portion of a building that contains two or more distinct occupancies, multiple occupancies in one building, the occupant load is determined by calculating

By calculating the occupant load for each occupancy separately and adding them together


Hey Dancehall is considered a concentrated use and each person is allowed how many square feet, area per person factor

7 ft.²


Area per person factor for an exercise room

50 ft.²


occupancy load for a 25,000 square-foot building used as an exercise area

25000/50= 500 people


Occupancy load for dance hall 25,000 square feet

25000/7= 3571 people


Method for determining the number of exits a room or building must have to effectively evacuate

Capacity of means of egress.
Arrangement of exits from room or building.
Effectiveness of means of egress


The total means of egress, or exit capacity must be at least equal to

The occupant load


To determine the required width for means of egress a numerical factor is expressed in inches per person. The most common numerical factors are

0.3 inches per person for stairway, 0.2 inches per person for ramps or level exit components


To determine the width for a means of egress buildings that are considered hazardous occupancies use what calculations of inch per person

0.7 inch per person for stairs, 0.4 inches for ramps or level exit component


Exit capacity is determined by

Calculating the capacity of exit access, exit, and discharge and determining the smallest capacity of the three.


Exit capacity of egress components is calculated by

Dividing width of component by inch per person factor.


Exit capacity for a corridor that is 44 inches wide

44/0.2= 220 persons


Exit capacity for an egress system who's exit access is a hallway 44 inches wide, the exit stairwell is 44 inches wide, and the exit discharge is 12 feet wide

44/0.2= 220 persons for corridor
44/0.3= 146 persons for stairs
12x12 (inches per foot) 144 inches
144/0.2= 720 persons

Smallest number is 146 so exit capacity is 146 people


In the case of multiple means of egress, total exit capacity for the building or room is determined by

Determine capacity of each exit and add them all together.


The total of the exit capacities cannot be less than

The sum of all the capacities.


Most codes require how many exits from any balcony mezzanine story or portion there of that has an occupant load of 500 persons or less

At least two exits


For occupant load greater than 500 persons on the balcony mezzanine story or portion of it, how many exits minimum

Three or more exits


For a balcony mezzanine story or portion of that has an occupant load of 1000 people what is the minimum number of exits

Four or more


Code specify the exit should be as remote from each other as possible. True false

Helps minimize travel distance to an exit


Went to exits are required they are to be located not less than how far apart

Not less than one half the length of the overall diagonal dimensions of the room


When two or more exits are required at least two will meet the minimum separation requirement while the third exit is to be located how

In a manner that will allow it to be available if the primary exits are blocked


Maxim travel distance to an exit is measured on the floor or walking surface along

Centerline of the natural path of travel


A dead and Corridor is a condition that exists when a Corridor has no outlet to a means of egress and is more than how long

20 ft or more long


Path that all occupants must travel in one direction before reaching a point where they may choose between two separate and distinct paths leading to two separate exits

Common path of travel


Steps and inspector should use in determining the means of egress requirements

Determine occupant load.
Determine clear width of the each component.
Determine egress capacity of each component.
Determine most restrictive component of each group.
Determine if egress capacity is sufficient


The means of egress system is composed of three basic elements

Exit access.
Exit discharge


Capacity of stairways must be able to accommodate how many people

The greatest number of people expected to occupy any single floor above