4 Construction Types And Occupancy Classification's Flashcards
Occupancy classification is based on
The use of the structure
The construction type is based on the fire resistance of materials and
Design of the structure
Construction type in occupancy classification are established by building codes that are
Adopted by local authority
The selection of a construction type is determined by the occupancy type building size and
Presents or lack of automatic fire suppression
Building construction type is based on the materials used in the construction as well as
The fire resistance of their structural components
What time of structural component meets the criteria for type I construction
Reinforced concrete, precast concrete, protected steelframe
Type I a fire resistance hours
Three
Type I b resistance hours
2
Type ii a resistance hours
1
Type IIB resistance hours
0
Type iii a structural frame fire resistance hours
1
Type IIIB structural frame fire resistance hours
0
In type I buildings both a and B types, floor construction including supporting beams and joists have a fire rating of how many hours
2
Exterior and interior loadbearing walls for all building construction types are how many hours
The same as its rating except type III who’s exterior is rated at two hours
Classified as type ii construction are composed of building materials that
That will not contribute to fire development or spread
What type of building construction is normally use when fire risk is expected to be be low or when suppression and detection systems are designed to meet hazard load
Type ii
Type IV construction is often referred to as heavy timber and is characterized by the use of large dimension lumber of what size for all structural elements
Greater than 4 inches
Any other material used in construction type I V and is not composed of what must have a fire resistance rating of
One hour
A structure that uses a glued laminated beam supported by a steel column cannot be classified as
Type IV
General types of occupancy classification
Assembly. Business. Educational. Day care. Industrial. Institutional. Mercantile. Residential. Residential board and care. Storage. Utility/miscellaneous. Multiple
What uniform firecode separates daycare and residential board and care into their own categories
NFPA 101
And assembly occupancy is any building structure or compartment that is used for the gathering of how many people
50 or more
NFPA divides assembly occupancies into class a structures that have loads over
1000
NFPA assembly occupancy class B
301 through 1000 people
NFPA class C assembly occupancy
50 through 300
Buildings that provide a workplace for large numbers of occupants in an office environment
Business occupancies