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Questions and Answers
Which type of space need not be divided at a required vertical fire separation?
Which type of space need not be divided at a required vertical fire separation?
What is the maximum fire-resistance rating allowed for the construction between a horizontal service space and the space below, if the vertical fire separation does not require a fire-resistance rating more than 45 min?
What is the maximum fire-resistance rating allowed for the construction between a horizontal service space and the space below, if the vertical fire separation does not require a fire-resistance rating more than 45 min?
Which of the following materials is NOT exempt from the flame-spread rating and smoke developed classification requirements for concealed spaces used as plenum within a floor or roof assembly?
Which of the following materials is NOT exempt from the flame-spread rating and smoke developed classification requirements for concealed spaces used as plenum within a floor or roof assembly?
What is the maximum flame-spread rating allowed for materials within a concealed space used as a plenum within a floor or roof assembly?
What is the maximum flame-spread rating allowed for materials within a concealed space used as a plenum within a floor or roof assembly?
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Which of the following is NOT a requirement for materials within a concealed space used as a plenum within a floor or roof assembly?
Which of the following is NOT a requirement for materials within a concealed space used as a plenum within a floor or roof assembly?
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Which material is NOT permitted for constructing ducts, duct connectors, associated fittings, and plenums in air duct systems?
Which material is NOT permitted for constructing ducts, duct connectors, associated fittings, and plenums in air duct systems?
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What is the minimum size requirement for an access opening to a crawl space?
What is the minimum size requirement for an access opening to a crawl space?
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In a building required to be of noncombustible construction, which of the following is NOT permitted for combustible ducts?
In a building required to be of noncombustible construction, which of the following is NOT permitted for combustible ducts?
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What is the maximum length permitted for duct connectors that contain combustible materials and are used between ducts and air outlet units?
What is the maximum length permitted for duct connectors that contain combustible materials and are used between ducts and air outlet units?
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What are the flame-spread rating and smoke developed classification requirements for duct sealants?
What are the flame-spread rating and smoke developed classification requirements for duct sealants?
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According to the National Building Code of Canada 2015, which of the following is true regarding coverings, linings, adhesives, and insulation for air duct systems?
According to the National Building Code of Canada 2015, which of the following is true regarding coverings, linings, adhesives, and insulation for air duct systems?
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According to the National Building Code of Canada 2015, what is the maximum flame-spread rating allowed for combustible coverings and linings in air duct systems?
According to the National Building Code of Canada 2015, what is the maximum flame-spread rating allowed for combustible coverings and linings in air duct systems?
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According to the National Building Code of Canada 2015, under what conditions can foamed plastic insulation be used in an air duct system?
According to the National Building Code of Canada 2015, under what conditions can foamed plastic insulation be used in an air duct system?
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According to the National Building Code of Canada 2015, what is the maximum flame-spread rating allowed for insulation and coverings on piping located in rooms and spaces other than service spaces?
According to the National Building Code of Canada 2015, what is the maximum flame-spread rating allowed for insulation and coverings on piping located in rooms and spaces other than service spaces?
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According to the National Building Code of Canada 2015, what is the maximum smoke developed classification allowed for combustible insulation and coverings used on piping in a building within the scope of Subsection 3.2.6?
According to the National Building Code of Canada 2015, what is the maximum smoke developed classification allowed for combustible insulation and coverings used on piping in a building within the scope of Subsection 3.2.6?
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What is the required clearance between a supply duct and combustible material if the plenum clearance is not more than 75 mm?
What is the required clearance between a supply duct and combustible material if the plenum clearance is not more than 75 mm?
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What is the required clearance between a supply duct and combustible material if the plenum clearance is more than 75 mm but not more than 150 mm?
What is the required clearance between a supply duct and combustible material if the plenum clearance is more than 75 mm but not more than 150 mm?
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What is the required clearance between a supply duct and combustible material if the plenum clearance is more than 150 mm?
What is the required clearance between a supply duct and combustible material if the plenum clearance is more than 150 mm?
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What is the required clearance for a register installed in a floor directly over a pipeless furnace?
What is the required clearance for a register installed in a floor directly over a pipeless furnace?
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What is the maximum flame-spread rating allowed for combustible grilles, diffusers, and other devices for supply, return, and exhaust-air openings in rooms?
What is the maximum flame-spread rating allowed for combustible grilles, diffusers, and other devices for supply, return, and exhaust-air openings in rooms?
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True or false: The clearance between a supply duct and combustible material is not less than the required plenum clearance within a horizontal distance of 450 mm from the plenum, and 12 mm at a horizontal distance of 450 mm or more from the plenum, if the plenum clearance required is not more than 75 mm.
True or false: The clearance between a supply duct and combustible material is not less than the required plenum clearance within a horizontal distance of 450 mm from the plenum, and 12 mm at a horizontal distance of 450 mm or more from the plenum, if the plenum clearance required is not more than 75 mm.
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True or false: The clearance between a supply duct and combustible material is not less than the required plenum clearance within a horizontal distance of 1 800 mm from the plenum, and 12 mm at a horizontal distance of 1 800 mm or more from the plenum, if the plenum clearance required is more than 75 mm but not more than 150 mm.
True or false: The clearance between a supply duct and combustible material is not less than the required plenum clearance within a horizontal distance of 1 800 mm from the plenum, and 12 mm at a horizontal distance of 1 800 mm or more from the plenum, if the plenum clearance required is more than 75 mm but not more than 150 mm.
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True or false: The clearance between a supply duct and combustible material is not less than the required plenum clearance within a horizontal distance of 1 000 mm from the plenum, 150 mm within a horizontal distance between 1 000 mm and 1 800 mm from the plenum, and 25 mm at a horizontal distance of 1 800 mm or more from the plenum, if the plenum clearance required is more than 150 mm.
True or false: The clearance between a supply duct and combustible material is not less than the required plenum clearance within a horizontal distance of 1 000 mm from the plenum, 150 mm within a horizontal distance between 1 000 mm and 1 800 mm from the plenum, and 25 mm at a horizontal distance of 1 800 mm or more from the plenum, if the plenum clearance required is more than 150 mm.
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True or false: A double-walled register box with not less than 100 mm between walls, or a register box with the warm-air passage completely surrounded by the cold-air passage, is permitted instead of the clearances listed in Sentences (2), (3) and (4) if a register is installed in a floor directly over a pipeless furnace.
True or false: A double-walled register box with not less than 100 mm between walls, or a register box with the warm-air passage completely surrounded by the cold-air passage, is permitted instead of the clearances listed in Sentences (2), (3) and (4) if a register is installed in a floor directly over a pipeless furnace.
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True or false: Combustible grilles, diffusers, and other devices for supply, return, and exhaust-air openings in rooms must conform to the flame-spread rating and smoke developed classification requirements for the interior finish of the surface on which they are installed.
True or false: Combustible grilles, diffusers, and other devices for supply, return, and exhaust-air openings in rooms must conform to the flame-spread rating and smoke developed classification requirements for the interior finish of the surface on which they are installed.
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True or false: Return ducts must be constructed of material having a flame-spread rating not more than 150, except as required by other Sentences.
True or false: Return ducts must be constructed of material having a flame-spread rating not more than 150, except as required by other Sentences.
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True or false: If any part of a return duct will be exposed to radiation from the furnace heat exchanger or other radiating part within the furnace, that part of a return duct directly above or within 600 mm of the outside furnace casing must be noncombustible.
True or false: If any part of a return duct will be exposed to radiation from the furnace heat exchanger or other radiating part within the furnace, that part of a return duct directly above or within 600 mm of the outside furnace casing must be noncombustible.
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True or false: Return ducts serving solid-fuel-burning furnaces must be constructed of noncombustible material.
True or false: Return ducts serving solid-fuel-burning furnaces must be constructed of noncombustible material.
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True or false: Combustible return ducts must be lined with noncombustible material below floor registers, at the bottom of vertical ducts, and under furnaces having a bottom return.
True or false: Combustible return ducts must be lined with noncombustible material below floor registers, at the bottom of vertical ducts, and under furnaces having a bottom return.
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True or false: Foamed plastic insulation can be used in an air duct system under certain conditions according to the National Building Code of Canada 2015.
True or false: Foamed plastic insulation can be used in an air duct system under certain conditions according to the National Building Code of Canada 2015.
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