TYPES OF CONSTRUCTION Flashcards
PURPOSE OF CONSTRUCTIN TYPES
SECTION 602
CONSTRUCTION CLASSIFICATION
602.1 General. Buildings and structures erected or to be erected, altered or extended in height or area shall be classified in one of the five construction types defined in Sections 602.2 through 602.5. The building elements shall have a fire resistance rating not less than that specified in Table 601 and exterior walls shall have a fire-resistance rating not less than that specified in Table 602. Where required to have a fire resistance rating by Table 601, building elements shall com-
ply with the applicable provisions of Section 703.2. The protection of openings, ducts and air transfer openings in building elements shall not be required unless required by other provisions of this code.
FIVE CONSTRUCTION TYPES
TYPES I (A&B) TYPE II (A&B) TYPE III (A&B) TYPE IV (A&B) TYPE V (A&B)
TYPE I AND II
602.2 Types I and II. Types I and II construction are those types of construction in which the building elements listed in Table 601 are of Noncombustible materials, except as permitted in Section 603 and elsewhere in this code.
TYPE III
602.3 Type III. Type III construction is that type of construction in which the exterior walls are of noncombustible materials and the interior building elements are of any material
permitted by this code. Fire-retardant-treated wood framing complying with Section 2303.2 shall be permitted within exterior wall assemblies of a 2-hour rating or less.
TYPE IV
602.4 Type IV. Type IV construction (Heavy Timber, HT) is that type of Construction in which the exterior walls are of
noncombustible materials and the interior building elements are of solid or laminated wood without concealed spaces. The
details of Type IV construction shall comply with the provisions of this section and Section 2304.11. Exterior walls complying with Section 602.4.1 or 602.4.2 shall be permitted Minimum solid sawn nominal dimensions are required for structures built using Type IV construction (HT). For glued laminated members and structural composite lumber (SCL) members, the Equivalent net finished width and depths corresponding to the minimum nominal width and depths of solid sawn lumber are required as specified in Table 602.4. Cross laminated timber (CLT) dimensions used in this Section are actual dimensions.
FIRE RESISTANCE RATING OF 1 A
PRIMARY STRUCTURAL FRAME -3
EXT BEARING WALLS - 3
INT BEARING WALLS - 3
NONBEARING WALLS AND PARTITIONS EXT - SEE TABLE 602
NON BEARING WALLS AND PARTITIONS INTERIOR - 0
FLOOR CONSTRUCTION AND ASSOCIATED MEMBERS - 2
ROOF CONSTRUCTION AND SECONDARY MEMBERS SEE SCT 202 - 1.5
FIRE RESIST RATING OF 1B
PRIMARY STRUCTURAL FRAME - 2
EXT BEARING WALLS - 2
INT BEARING WALLS - 2
NONBEARING WALLS AND PARTITIONS EXT - SEE TABLE 602
NON BEARING WALLS AND PARTITIONS INTERIOR - 0
FLOOR CONSTRUCTION AND ASSOCIATED MEMBERS - 2
ROOF CONSTRUCTION AND SECONDARY MEMBERS SEE SCT 202 - 1
FIRE RESIST RATING OF TYPE II A
PRIMARY STRUCTURAL FRAME - 1
EXT BEARING WALLS - 1
INT BEARING WALLS - 1
NONBEARING WALLS AND PARTITIONS EXT - SEE TABLE 602
NON BEARING WALLS AND PARTITIONS INTERIOR - 0
FLOOR CONSTRUCTION AND ASSOCIATED MEMBERS - 1
ROOF CONSTRUCTION AND SECONDARY MEMBERS SEE SCT 202 - 1
FIRE RESIST RATING OF IIB
PRIMARY STRUCTURAL FRAME - 0
EXT BEARING WALLS - 0
INT BEARING WALLS - 0
NONBEARING WALLS AND PARTITIONS EXT - SEE TABLE 602
NON BEARING WALLS AND PARTITIONS INTERIOR - 0
FLOOR CONSTRUCTION AND ASSOCIATED MEMBERS - 0
ROOF CONSTRUCTION AND SECONDARY MEMBERS (SEE SCT 202) - 0
FIRE RESIST RATING OF IIIA
PRIMARY STRUCTURAL FRAME - 1
EXT BEARING WALLS - 2
INT BEARING WALLS - 1
NONBEARING WALLS AND PARTITIONS EXT - SEE TABLE 602
NON BEARING WALLS AND PARTITIONS INTERIOR - 0
FLOOR CONSTRUCTION AND ASSOCIATED MEMBERS - 1
ROOF CONSTRUCTION AND SECONDARY MEMBERS SEE SCT 202 - 1
FIRE RESIST RATING OF IIIB
PRIMARY STRUCTURAL FRAME - 0
EXT BEARING WALLS - 2
INT BEARING WALLS - 0
NONBEARING WALLS AND PARTITIONS EXT - SEE TABLE 602
NON BEARING WALLS AND PARTITIONS INTERIOR - 0
FLOOR CONSTRUCTION AND ASSOCIATED MEMBERS - 0
ROOF CONSTRUCTION AND SECONDARY MEMBERS SEE SCT 202 - 0
FIRE RESIST RATING OF TYPE IV
PRIMARY STRUCTURAL FRAME - HT
EXT BEARING WALLS - 2
INT BEARING WALLS - 1/HT
NONBEARING WALLS AND PARTITIONS EXT - SEE TABLE 602
NON BEARING WALLS AND PARTITIONS INTERIOR - SEE 602.4.6
FLOOR CONSTRUCTION AND ASSOCIATED MEMBERS - HT
ROOF CONSTRUCTION AND SECONDARY MEMBERS SEE SCT 202 - HT
FIRE RESIST RATING OF TYPE V A
PRIMARY STRUCTURAL FRAME - 1
EXT BEARING WALLS - 1
INT BEARING WALLS - 1
NONBEARING WALLS AND PARTITIONS EXT - SEE TABLE 602
NON BEARING WALLS AND PARTITIONS INTERIOR - 1
FLOOR CONSTRUCTION AND ASSOCIATED MEMBERS - 1
ROOF CONSTRUCTION AND SECONDARY MEMBERS SEE SCT 202 - 1
FIRE RESIST RATING OF TYPE VB
PRIMARY STRUCTURAL FRAME - 0
EXT BEARING WALLS - 0
INT BEARING WALLS - 0
NONBEARING WALLS AND PARTITIONS EXT - SEE TABLE 602
NON BEARING WALLS AND PARTITIONS INTERIOR - 0
FLOOR CONSTRUCTION AND ASSOCIATED MEMBERS - 0
ROOF CONSTRUCTION AND SECONDARY MEMBERS SEE SCT 202 - 0
