Questions and Answers
What types of construction are considered 'noncombustible'?
Type III buildings are constructed with ______ exterior walls and interior elements __________.
noncombustible, of any material permitted by the code
A Type IV building is also described as _____ construction.
In buildings of Type III and IV construction, under what condition is fire-retardant-treated wood framing permitted within exterior wall assemblies?
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Where supporting floor loads, wood columns of Type IV construction shall be of what minimum nominal size?
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Where used in floor framing, wood beams of Type IV construction shall be of what minimum nominal size?
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Roofs shall be without concealed spaces in buildings of Type _________ construction.
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Which of the following materials is permitted in a building of Type VB construction?
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In a building of Type IB construction, what is the minimum required fire-resistance rating of the floor construction?
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Which one of the following members is not considered to be a part of the primary structural frame?
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In a building of Type IIB construction, what is the minimum required fire-resistance rating of the roof construction?
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In a building of Type VA construction, which of the following building elements does not require a minimum 1-hour fire-resistance rating?
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In a one-story Type IA building, what is the minimum required fire-resistance rating for the interior bearing walls supporting the roof only?
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In Type IA buildings limited to two stories in height, what building element is permitted to be constructed of fire-retardant-treated wood?
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In a Type IB building housing a Group A-4 occupancy, fire protection of the roof structural members, framing and decking is not required where every portion of the roof construction is a minimum of ______ feet above the floor below.
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In a Type IIB building housing a Group I-2 occupancy, what is the minimum required rating for an exterior nonbearing wall located with a fire separation distance of 8 feet?
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In a Type IIA building housing a Group R-2 occupancy, what is the minimum required rating for an exterior nonbearing wall located with a fire separation distance of 3 feet?
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In a Type IIIA building housing a Group A-1 occupancy, what is the minimum required rating for an exterior bearing wall located with a fire separation distance of 10 feet?
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In a Type VB building housing a Group B occupancy, what is the minimum required rating for an exterior bearing wall located with a fire separation distance of 10 feet?
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Considering all occupancies and construction types, for which minimum fire separation distance is not fire rating required for a nonbearing exterior wall?
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In a building of Type I or II construction, nonbearing partitions having a maximum fire-resistance rating of _______ are permitted to be constructed of fire-retardant-treated wood.
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When used in Type IV construction, cross-laminated timber shall be a minimum of ______ inches in thickness.
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In a building of Type I or II construction, nonbearing exterior walls having a maximum fire-resistance rating of _______ are permitted to be constructed of fire-retardant-treated wood.
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Show windows may be of combustible construction in Type I and II construction where located a maximum of _______ above grade.
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Which type of roof covering is not permitted on an office building of Type IIB construction?
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Which of the following methods of construction is not permitted for partitions in Type IV structures?
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What is the minimum fire-resistive rating required for interior metal stud partitions in Type IIB construction?
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What is the minimum required vertical distance between the upper floor and the roof to allow the use of fire-retardant-treated wood in the roof construction of an eight-story Type IA building?
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For an office building of Type IB construction, what is the minimum required fire-resistance rating for an exterior bearing wall located on an interior lot line?
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In a building of Type IIA construction, heavy timber members may be used in lieu of one-hour fire-resistance-rated construction for which building element?
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In a building of Type IV construction, 1-hour combustible construction is permitted in lieu of heavy-timber construction for which of the following building elements?
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Where an exterior bearing wall of a Group M occupancy of Type IIB construction is located 3 feet from an interior lot line, the wall must have a minimum fire-resistance rating of hour(s).
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A nonbearing exterior wall of a Type IB open parking garage complying with Section 406 shall have a minimum fire-resistance rating of _______ hour(s) where the fire separation distance is 10 feet.
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A glued-laminated beam, where utilized in a Type IV building requiring a 6-inch by 10-inch solid-sawn member of nominal size, shall have a minimum net finished size of _______.
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Under general conditions, thermal and acoustical insulation other than foam plastic is permitted to be installed in buildings of Type I or II construction, provided the insulation has a maximum flame spread index of _______.
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Study Notes
Types of Construction
- Noncombustible construction types are classified as Type I and II.
- Type III buildings feature noncombustible exterior walls and allow interior elements of any material as permitted by the code.
- Type IV buildings are referred to as heavy timber construction.
Fire-Retardant Treatments and Ratings
- Fire-retardant-treated wood framing can be used in exterior wall assemblies for Types III and IV if the wall has a fire-resistance rating of 2 hours or less.
- In Type IV construction, wood columns must be a minimum nominal size of 8 inches by 8 inches to support floor loads.
- Roofs in Type IV buildings must not have concealed spaces.
Material Usage in Construction
- Type VB construction allows the use of wood, steel, and masonry.
- In a Type IB building, the minimum required fire-resistance rating of floor construction is 2 hours.
- For Type IIB constructions, the roof does not require any fire-resistance rating.
Fire Separation Distances
- Nonbearing exterior walls require no fire rating if the fire separation distance is 30 feet or more.
- For Type IIA buildings, exterior nonbearing walls must have a fire-resistance rating of 1 hour if located 3 feet from a fire separation line.
Specific Structural Requirements
- Interior metal stud partitions in Type IIB constructions require no fire-resistance rating.
- In Type IB buildings, the structural roof elements require no fire protection if 20 feet or more above the floor below.
- Heavy timber members in Type IIA construction can be used as an alternative to one-hour fire-resistance-rated roofs.
Construction Regulations
- Show windows in Type I and II constructions can be combustible if located no more than 15 feet above grade.
- Class D roof coverings are not permitted in office buildings of Type IIB construction.
Additional Notes on Sizes and Standards
- Cross-laminated timber must be a minimum of 4 inches thick in Type IV structures.
- The minimum required vertical distance between roof and upper floor to use fire-retardant-treated wood in roof construction of an eight-story Type IA building is 20 feet.
- Guled-laminated beams must meet specific size criteria to replace solid-sawn members in Type IV buildings.
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Description
Test your knowledge on Chapter 6 of the IBC 2018. This quiz covers essential terms related to construction types and their fire resistance classifications. Perfect for students and professionals in architecture and building codes.
