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
Inherent benefit of interior organization for business occupancies
Compartmentalization
Any building your portion of the building that is used for the purpose of education of 6 or more persons from preschool through 12th grade that meets at 4 or more hours in a day or more than 12 hours a week
Educational occupancy
Amount of people allowed in a classroom space for educational occupancy
One person every 20 ft.²
How many people are permitted for laboratories vocational shops
One person every 50 ft.²
Gymnasiums lecture halls and dining also follow what requirement for occupancy
Assembly requirements for occupancies
NFPA classifies manufacturing and processing facilities as what type of occupancy
Industrial occupancy
Three subdivisions of industrial occupancies
General purpose. Special purpose. High hazard
Buildings classified as group i institutional by the ICC codes are occupancies in which
People with physical limitations due to health or age are cared for and provided medical treatment
Institutional occupancies defined by NFPA 101
Health care. Ambulatory healthcare. Detention and correctional. Residential board and care. Day care
Facilities to provide health or medical services to four or more individuals who cannot the back with them selves during an emergency assistance from staff
Healthcare occupancy
In order for some healthcare occupancies to obtain Medicare certification they may have to abide by
NFPA 101
Staff members in these types of facilities are responsible for the safety and welfare of the residence but they do not provide medical or nursing care
residential board and care occupancies
If one resident at a nursing facility has slow if activation capabilities and the rest have prompt capabilities the entire occupancy must be classified as
Slow
Facilities that provide care maintenance and supervision of persons of any age for periods of less than 24 hours a day
Daycare occupancies
Pharmacies are considered what type of building classification
Mercantile
Occupancies that provide sleeping accommodations under conditions other than those defined for healthcare or detention occupancies
Residential occupancies
NFPA further divided residential occupancies into the following categories
One and two family dwelling units. Lodging or rooming house. Hotel. Dormitory. Apartment building
One into family dwellings are not exempted in the model codes. However they are not subject to
Periodic inspections in most jurisdictions
Facilities that provide sleeping accommodations for rent
Lodging or rooming houses
NFPA 101 uses lodging or rooming house classification to describe occupancies include guesthouses, foster homes, bed-and-breakfast, and motels that provide 24 hour accommodations for how many individuals
16 or fewer individuals without cooking facilities
Any building or group of buildings that provide sleeping rooms for transients
Hotel
Any building or portion of the building in which sleeping accommodations are provided to 16 or more persons who are not related
Dormitory
Single or multi story structures containing three or more independent dwelling units with cooking and bathroom facilities in each
Apartment buildings
NFPA use as a broad approach to classify storage occupancies. They include the following
Warehouses. Storage units. Freight terminals. Parking garages. Aircraft hangers. Grain elevators. Barns. Stables
Maximum amount of a hazardous material to be stored or used within a control area inside a building or an outdoor control area
Maximum allowable quantity
Maximum allowable quantity per control area is based on
The material state and the material storage or use conditions
The ICC describe storage within several occupancy classifications. Group s storage covers anything below the maximum allowable quantities. Anything with goods in excess of maximum allowable quantities falls into which ICC group
Group H hazardous classification
Examples of utility and miscellaneous occupancies are as follows
Barnes. Livestock shelters. Carports. Towers. Sheds. Fences over 6 feet tall. Retaining walls
True/false. In general NFPA 101 does not require the separation of occupancies in the same structure
True
In the ICC building code, chapter 5, General Building Heights and areas, section 508, includes two divisions for multiple occupancies
Incidental and mixed-use
Buildings designated incidental shall conform to the occupancy requirements of
The building or portion of building it is located in
Waste and linen collection rooms that are over 100 ft.² are considered what type of use
Incidental use
For separations regarding incidental use the model code usually requires what
Fire resistance rating separations
Where permitted an automatic fire extinguishing system without a fire barrier can be installed as long as construction features do what for the incidental use area
Separate it from the rest of the building
Structures containing multiple occupancy types are considered to be
Mixed occupancies
The ICC further divides mix occupancies into
Accessory. Non-separated. Separated
Accessory occupancies are subsidiary to the main occupancy of a structure and limited to no more than what percent of the area of the story on which they are located
No more than 10%
Accessory assembly occupancies remain as part of the main occupancy classification when it is less than how many square feet
Less than 750 ft.²
Buildings or portions of buildings that have two or more occupancy uses each classified according to its own use
Non-separated
Entire structure and or portions of structures that have several occupancy types contained with in them Are referred to as
Separated
Type III interior and exterior bearing wall fire resistance rating hours for both type A and type B
2 hr Exterior for A and B
1 hr Interior for A
0 hr interior for B
