Chapter 13 Building Design Flashcards
According to the State Fire Marshal’s Office, there are approximately 1,700 high-rise buildings in the State of California; of these, Los Angeles has approximately ___.
745
Most of the high-rise buildings in Los Angeles consist of commercial occupancies. About ___ percent are habitational, such as hotels, apartment buildings, and condos.
20 to 25
High-rise buildings are divided into two groups: “___” and “____.”
Existing High-Rise / New High-Rise
Approximately ___ of the high-rise buildings in Los Angeles are new high-rises.
225
The Los Angeles City Hall, with ___, and the USC-LA County General Hospital, with ___ , are exceptions to this rule.
27 stories / 19 stories
A “High-Rise Retrofit Program” was initiated by the LAFD and the state in ___ to bring these buildings into conformance with newer building codes.
1976
Type I (fire resistive) construction is that type of construction in which the structural members, including walls, columns, beams, floors and roofs are of ____, and are required to have varying fire-resistive rating depending on their usage.
noncombustible or limited combustible materials
The Type I building is designed to withstand the most severe fire to be expected within the building for ____ without structural failure.
two or more hours
Post 1960 : However, instead of reinforced concrete, they were generally built with Steel Beams Coated With a Fire Retardant Material commonly known as ___.
Mono-Kote.
By the 1960’s, the codes required “COMPARTMENTATION,” that is, subdivision of buildings into “fire areas.” This was accomplished by providing _____ between floor levels and around vertical shafts. ____ and other fire protection assemblies are installed to protect penetrations through these separations.
two-hour, fire-resistive separations / Fire doors
___ on the periphery of some high-rise buildings were constructed to provide “smoke-free” exiting and access.
Smoke Towers
In a smoke tower, you travel through a vestibule where smoke can escape___ as you move between the building and the stairshaft.
to the outside atmosphere
Each new high-rise is required to maintain a ___ Fire Control Room previously known as the building control station, in an approved location (usually the ground floor).
one-hour rated
All new high-rise buildings must have an ____, a system capable of exhausting smoke directly to the exterior of the building, or perimeter windows must be openable or have breakable tempered glass in each ____ , or a combination of the above.
emergency smoke control system / corner and every 50 linear feet
HVAC systems designed for smoke removal may also be used, providing they exhaust a minimum of ___ per hour, and exhaust to the exterior of the building without recirculating to the other sections of the building.
six air changes
Most new high-rise buildings have an Emergency Helicopter Landing Facility on the roof. The number inside the ____ pad identifies the load capacity of the pad in _____. The numbering is ____.
50’ by 50’ / thousands of pounds / 10’ wide
Also, such fire escapes were required to have wired glass or equivalent protection for the windows on all landings and within ____ on either side of the landing.
5’
