Building Construction Flashcards
Factors that influence fire behavior include:
_____ classifications
____ classifications
Fire or fuel _____
Fire______
Building
Occupancy
Load
Resistance
_______ initially classify structures by the materials used in their construction.
Building codes
Type I-
Type II-
Type III-
Type IV-
Type V-
Fire resistive
Non combustible or protected non combustible
Exterior protected (masonry)
Heavy timber
Wood frame
With the exception of type ___, the major classifications are further divided into ___ or ___ subclassifications.
Type IV heavy timber
Two or three
NFPA ___ details the requirements for each of the classifications and subclassifications. In NFPA ——each classification is designated by a three digit number code. For example, type I construction can be either ____ or ____.
NFPA 220 x2
4-4-3 or 3-3-2
NFPA 220
First digit-
Second digit-
Third digit-
Fire resistance rating of exterior bearing walls
Fire resistance rating of structural frames or columns and girders that support loads of more than one floor.
Fire resistance rating of the floor construction
The IBC uses construction classifications similar to NFPA 220, although the requirements for ____ differ.
Individual structural components
Type I
Variation of fire resistance by application include:
Bearing walls, columns, and beams-
Floor-
Roof deck and construction supporting the roof-
Interior partitions enclosing stairwells and corridors-
Partitions separating occupancies or tenants-
2-4 hours as specified by local code and construction classification
2 or 3 hours
One-2 hours
As specified by local code, usually 1 or 2 hours
As specified by local code
Type I buildings are most commonly constructed using a ____ or ____.
Protected steel frame or reinforced concrete
Unprotected steel has no _____.
Fire resistance
_____ can fail under an explosion or intense fire of long duration
Reinforced concrete
Type I
A code may also allow the use of _____ treated wood in roofs or interior partitions.
Fire retardant
Type II
In addition to steel and concrete block, __ and ___ can be used with a limited structural role.
Glass and aluminum
Some building codes contain a provision to omit the fire-resistive rating for a roof construction for some occupancy types when the roof is located _____ feet above the floor.
MORE THAN 20
Type IIA (protected) requires that structural components have ___ hour fire resistance. Protected non combustible construction is similar to Type I but with a ________ for fire resistance
One hour
Lower requirement for
Type II
The speed at which unprotected members will fail depends on the following factors:3
Ceiling height of the building
Size of the unprotected steel members intensity and duration of the exposing fire
___________construction has been commonly referred to as “ordinary construction”. _______construction is frequently constructed with exterior walls of _______, but from a technical standpoint, any non-combustible material with the required fire resistance can be used for the exterior walls. Interior structural components that are permitted to be partially or wholly combustible include:
Type III x2
Masonry
Walls
Columns
Beams
Floors
Roofs
_____ construction is classified by the presence of non-combustible structural components that have fire resistance ratings within a specified range.
Type I
Type I
Combustible materials typically are permitted for such uses as the following:
roof coverings
interior floor finishes
interior wall finishes and trims
doors and door frames
window sashes and frames
platforms
nailing and furring strips
light transmitting plastics
Foam plastics subject to restrictions
Type III construction has ___ subclassifications allowing the interior structural components to be ___ or _____.
Two
Protected or unprotected
When the structural components of type 3 construction are required to have a fire rating (such as for IBC type___ and NFPA type____ construction), they can be protected by several means, including ____ in older buildings and ____ in newer buildings. In NFPA type ____ and ibc type ___, _____ steel is sometimes used to support combustible members. Type 3 construction commonly uses nominal ___x___ joists for floor construction.
IBC typeIIIA and NFPA type III 2-1-1
Plaster
Gypsum board
NFPA type III 2-0-0 and IBC type IIIB, unprotected steel
2 inch by 10 inch
Type IV construction is the only construction type that does not include A and B subdivisions. Instead the designation ____ is used.
2HH
Type IV construction requires minimum nominal dimensions of ____ x___ for floor construction
6 inch x 10 inch
Many type V structures are required to have a ___hour fire resistance for structural components
1 hour