Inspector Chapter 7 Flashcards
Safe, continuous path of travel from any point in a structure to a public way. Comprised of three parts: The exit access, the exit, and the exit discharge.
Means of Egress
The _____ _____ _____ is one of the most important factors inspectors must consider in determining whether a structure can be considered safe.
Means of Egress
A means of egress system is composed of these three basic elements:
The Exit Access, The Exit, The Exit Discharge
Parcel of land such as a street or sidewalk that is essentially open to the outside and is used by the public to move from one location to another.
Public Way
An area where person unable to use stairways can remain temporarily to await instructions or assistance during emergency evacuation.
Area of Refuge
Actual unobstructed opening size of an exit.
Clear Width
The means of egress must terminate in a _____ _____ or an _____ _____ _____
Public Way or an Area of refuge.
A Public way must have a clear width and height of _____ _____.
10 Feet
Areas of refuge can be located in an _____ _____ _____ or a _____ _____
approved elevator lobby or a rated stairwell
Federal Statute intended to remove barriers, physical and otherwise, that limit access by individuals with disabilities.
Americans with Disabilities Act (ADA) of 1990 - Public Law 101-336
Portion of a means of egress that leads tot he exit; for example, hallways, corridors, and aisles
Exit Access
The route of travel used to determine measured egress distances in code enforcement.
Common Path of Travel
The common path of travel is considered to be down the center of a straight corridor and a ___-_____ radius around each corner. Also called normal path of travel.
1-Foot
Portions of a mean of egress that is separated from all other spaces of the building structure by construction or equipment, and provides a protected way of travel to the exit discharge.
Exit
A path of egress travel from one building to an area in another building on approximately the same level, or path of egress travel through or around a wall or partition to an area on approximately the same level in the same building.
Horizontal Exit
Horizontal Exits may be substituted for other exits if they do not compose more than _____ percent of the total exit capacity of the building.
50
Horizontal exits require fire walls or barrier walls with at least ___-_____ fire resistance rating. A ___-_____ fire-rated door assembly would be installed in the fire barrier to permit movement between the two compartments.
2-hour; 1 1/2 hour.
Stairways that are designed to limit the penetration of smoke, heat, and toxic gasses from a fire on a floor of a building into the stairway and that serve as part of a means of egress.
Smokeproof enclosure
_____ _____ provide the highest degree of fire protection for stair enclosures that the model codes require.
Smokeproof Enclosures
Two ways to make the stair enclosure smoke-proof are:
Pressurize it or use natural or mechanical ventilation
That portion of the exit that is between the exit and a public way
Exit Discharge
In new buildings, model codes require that swinging or hinged doors serving as a component of a means of egress provide a minimum of ___ inches of clear unobstructed width
32 inches
If ___ or more people are in a room or occupancy, the exit requirements for the building take on a higher level of significance and additional exiting system requirements must be met.
50 (so, an assembly)
Hardware mounted on exit doors in public buildings that unlocks from the inside and enables doors to be opened when pressure is applied to the release mechanism. Also called exit device.
Panic Hardware
Panic hardware must operate by causing the latch to release by applying a force of no more than ___ _____.
15 poundsP
Panic Hardware: Setting the door in motion by applying a force of no more than ___ _____
30 Pounds
This type of hardware is designed to allow occupants to egress freely while enabling the door to be secured from the outside.
Access-Controlled Egress
In Access-Controlled Egress, The doors must be arranged to unlock from a manual unlocking device that delays relocating for a minimum of ___ seconds and has a sign stating, “PUSH TO EXIT”
30 Seconds
In Access-Controlled Egress, What should happen with the activation of a building fire alarm, fire detection, or automatic splinter system?
Doors will Unlock
With Delayed Egress: Initiating the release mechanism by applying a force of no more than ___ pounds must permit the door to open within ___ seconds, or in some cases, ___ seconds.
15 pounds; 15 seconds; 30 seconds
Generally, the NFPA permits only the use of Class ___ or Class ___ interior finishes in exits or exit-access corridors
Class A (0-25 flame-spread rating) or Class B (26-75 flame-spread rating)
A ceiling that is part of a means of egress must have the Same/Better/.5 hour less fire-resistance rating as the walls?
Same
In multistory building of more than 50 people, Stairways must be at least ___ _____ wide.
44 Inches Wide
In a multistory building of less than 50 people, Stairways must be at least ___ ______ wide.
36 Inches
In multistory buildings: Landings must be provided so that no flights of stairs are greater than ___ _____ high
12 Feet
In multistoried buildings, stairs that are exceptionally wide may be required to:
Have intermediate handrails in the middle of the stairs
When exit stairs connect three or less stories, the separating construction must have a fire-resistance rating of at least:
1-Hour
When exits connect four or more stories, the separating construction must have a fire-resistance rating of at least:
Two-Hours
A _____-_____ and _____ fire-resistance-rated exit door must protect any opening in the exit stairs.
Self-Closing and Latching
Exterior ramps must offer the same degree of protection as _____ _____, with some exceptions for certain occupancies
Exterior Stairs
Where fire escape stairs are still allowed on existing buildings, they may constitute only _____ of the required means of egress
Half
Fire escape sliders, also called slidescapes, may be used as a means of egress where authorized, and must be rated at one exit per slide with a rated capacity of ___ persons.
60
_____ _____ is designed to provide illumination when normal power is lost.
Emergency Lighting
Emergency lighting systems must provide the proper amount of illumination for ___ minutes.
90
Emergency Lighting: Floors must be illuminated at no less than ___ ___-___ (___ Lux) at floor level.
1 foot-candle (10 Lux)
Emergency Lighting: A reduction of ___ _____-_____ (___ lux) at floor level is permitted in auditoriums, theaters concert, or opera halls, and other places of assembly during performances as long as the lighting automatically adjusts back to 1 foot-candle when a fire alarm is activated.
0.2 foot-candle (2 lux)
Illuminated exit signs must be positioned so that no point in the exit access is more than ___ _____ from the nearest visible sign.
100 feet
The letters on exit signs must be at least ___ _____ high and the principal strokes of the letters at least ___ ____ wide
6 inches; 3/4 inches
The bottom of Floor level exit signs must be between ___ _____ and ___ _____ above the floor surface.
6 inches and 8 inches
Total number of people for which the means of egress of a building or portion thereof is designed.
Occupant Load
A stage or platform occupant load is calculated using ___ square feet per person.
15
An audience area with non fixed seating uses ___ square feet per person in movable chairs.
7
The most common numerical factor expressed for means of egress is ___ ____ per person for stairways and ___ _____ per person for ramps or level exit components.
0.3 inches; 0.2 inches
Codes require that there be at least two exits from any balcony, mezzanine, story, or portion thereof that has an occupant load ___ persons or less.
500
(Balcony, mezzanine, story, or portion thereof) For occupant loads greater than 500 persons, codes require that there be a minimum of _____ separate exits, with _____ or more exits required for 1,000 or more people.
3; 4
When more than one exit is required, the ___-___ _____ _____ is applied to assist in determining the placement of exits
One-Half diagonal Rule
(They should be located no less than half the length of the overall diagonal dimension of the room or building area) This is measured as a straight line from the nearest edges of the exit or exit access doors to each other.
Distance from any given area in a structure to the nearest exit or to a fire extinguisher
Travel Distance
Condition that exists when a corridor has no outlet to a means of egress and is more than 20 feet in length
Dead-End Corridor
