OBJ 4.1 Flashcards
Determine adherence to building regulatory requirements (IBC) at detail level (U/A) It is critical to be able to apply the International Building Code to the design and documentation of a project, specifically building use and occupancy, means of egress, heights and areas, fire and smoke protection, MEP systems, and structural systems, as well as material and assembly requirements.
Building Height
The vertical distance from the grade plane to the average height of the highest roof surface.
Primary Fire Protection Systems
Fire sprinklers, smoke-control systems, and smoke and heat vents.
Audible Alarm Requirements
907.5.2.1 requires audible alarms to emit a distinctive sound, not used for any other purpose other than that of a fire alarm, and to be at least 15 decibels above the ambient sound, or 5 dBA above the maximum sound level.
Exit
Portion of the means of egress system between the exit access and the exit discharge or the public way (e.g., stairwell between a corridor and a yard that is connected to a street).
Draft-Stopping
Term used for the provision of materials or devices to restrict the movement of air within open spaces concealed in combustible construction, such as floors, ceiling cavities, and attics.
Assembly Group A1 Occupancy
Assembly uses with fixed seating intended for viewing performing arts or motion pictures.
Assembly Group A2 Occupancy
Assembly intended for food and drink consumption including banquet halls, night clubs, restaurants, and bars.
Assembly Group A3 Occupancy
Other assembly uses not classified elsewhere in Group A. This includes but is not limited to worship, recreation, amusement, art galleries, courtrooms, libraries, museums, waiting areas in transportation terminals, and indoor pools.
Assembly Group A4 Occupancy
Assemblies for activities intended for viewing indoor sports with spectator seating such as arenas, pools, skating rinks, and so on.
Assembly Group A5 Occupancy
Assembly intended for participating in or viewing outdoor activities including stadiums, grandstands, and outdoor bleachers.
Business Group B Occupancy Classification
The use of a building for office, professional, or storage use. Examples include a bank, carwash, post office, print shop, or animal hospital.
Educational Group E Occupancy Classification
Use of a building by six or more people at a time for educational purposes through the 12th grade. Also includes educational supervision or personal care services for more than five kids older than two years of age.
Accessory Occupancy
A space or room that is different than the main occupancy but doesn’t exceed 10% of the main occupancy floor area (e.g., a gift shop in a hospital).
Fire Partition
A wall assembly with a one-hour fire resistance rating. Must provide a continuous barrier from slab to slab. Openings in fire partitions must have a minimum rating of 45 minutes, except corridors, which need 20-minute fire protection assemblies.
Fire Barrier
Vertical or horizontal assembly designed to restrict the spread of fire or confine it to limited areas. This offers more protection than fire partitions.
Fire Wall
Walls that extend from the building’s foundation through the roof to a parapet or to the underside of a noncombustible roof, and must have a fire rating of 2 to 4 hours. Reference IBC Chapter 706.
Smoke Barrier
A continuous vertical or horizontal membrane with a minimum one-hour rating. The barrier is designed to resist the movement of smoke.
Exit Access
The portion of the means of egress that leads to the entrance of an exit. This is where the travel distance is measured and regulated.
Exit Discharge
The portion of the egress system between the exit termination and the public way.
Dead End Corridor
A corridor without an exit at the end. The distance is limited to 20 feet in an unsprinklered building or 50 feet in a fully sprinkled building.
Occupant Load Factor
Amount of floor area presumed to occupied by one person.
Occupant Load
The number of persons for which the means of egress of a building or portion thereof is designed. Calculated based on the occupant load table in IBC, occupancy classification of building, and finished square footage of space.
Common path of egress travel
The portion of an exit that all occupants travel until they get to a point of two separate and distinct paths of egress to different available exits. IBC limits the common path of egress travel from 75’ to 100’, depending on building occupancy group.
Minimum width of stairways that are a part of an accessible means of egress?
44” with allowable handrail protrusions.
