NBC 2015 - Section 9.10

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Which of the following is true regarding fire blocks in concealed spaces of combustible construction?

They are required at intervals of not more than 20 m in concealed spaces in mansard or gambrel style roofs.

They are not required if the exposed construction materials have a surface flame-spread rating less than 25.

They are required to separate spaces that are not more than 60 m in greatest dimension. (correct)

They are not required if the concealed space does not exceed 20 m in any dimension.

What is the maximum area allowed for a concealed space with exposed construction materials having a surface flame-spread rating greater than 25?

100 m2

200 m2

300 m2 (correct)

60 m2

What is the maximum dimension allowed for the concealed space described in Clause (5)(b)?

10 m

15 m

25 m

20 m (correct)

In a wall assembly, fire blocks should be provided at each ceiling level if the ceiling contributes to part of the required fire-resistance rating. What is the maximum distance allowed between fire blocks horizontally?

20 m Signup and view all the answers

What materials can be used to construct fire blocks according to the text?

All of the above Signup and view all the answers

According to the National Building Code of Canada 2015, what is the maximum aggregate area of glazed openings in an exposing building face where the limiting distance is 1.5m?

7% Signup and view all the answers

In an irregularly shaped or skewed exterior wall, where should the location of the exposing building face be taken for determining the required cladding-sheathing assembly and fire-resistance rating?

At a vertical plane Signup and view all the answers

When is a limiting distance equal to half the actual limiting distance used in the National Building Code of Canada 2015?

When both a) and b) are true Signup and view all the answers

What is the maximum allowable aggregate area of glazed openings in an exposing building face if the limiting distance is 2m or less and the building is not sprinklered?

50% of the maximum aggregate area determined in Sentence (1) Signup and view all the answers

What is the minimum spacing required between individual glazed openings serving a single room or space on the same exposing building face?

2m vertically Signup and view all the answers

According to the text, when calculating the area of an exposing building face, which of the following is NOT considered?

The area of any number of individual vertical portions of the wall measured from the finished ground level to the uppermost ceiling Signup and view all the answers

According to the text, when is a section of an exterior wall not divided into portions for the purpose of calculating the area of exposing building face?

When the limiting distance of the section is 2 m or less Signup and view all the answers

According to the text, which of the following buildings does NOT fall under the application of this Subsection?

Buildings that contain both dwelling units and commercial spaces Signup and view all the answers

According to the text, how is the area of an exposing building face calculated when a building is divided into fire compartments?

The area is calculated as the area for each fire compartment Signup and view all the answers

According to the text, when is Table 9.10.15.4. used to determine the maximum aggregate area of glazed openings?

When the exposing building face is divided into portions Signup and view all the answers

According to Article 9.9.8.5, what percentage of the wall surface of a lobby used as an exit should have a surface flame-spread rating of not more than 25?

75% Signup and view all the answers

According to Article 9.10.17.4, what percentage of the total wall area and total ceiling area in an exterior exit passageway is permitted to have a surface flame-spread rating of not more than 150?

10% Signup and view all the answers

According to Article 9.10.17.5, what percentage of the total wall surface in any unsprinklered public corridor should have a surface flame-spread rating of not more than 75?

90% Signup and view all the answers

According to Article 9.10.17.5, what percentage of the upper half of the walls in any unsprinklered public corridor should have a surface flame-spread rating of not more than 25?

25% Signup and view all the answers

According to Article 9.10.17.6, what is the maximum surface flame-spread rating allowed for the wall and ceiling finishes of an exterior exit passageway that provides the only means of egress from the rooms or suites it serves?

25 Signup and view all the answers

According to the National Building Code of Canada 2015, which of the following is true regarding buildings containing 1 or 2 dwelling units only?

They are exempt from Sentence (5) Signup and view all the answers

According to the National Building Code of Canada 2015, which of the following is required for combustible projections on an exposing building face that extend within 1.2 m of a property line?

The construction must comply with the requirements for limiting distances less than 1.2 m Signup and view all the answers

According to the National Building Code of Canada 2015, what is the minimum thickness required for protecting the underside of a projecting roof soffit that is more than 0.6 m above finished ground level?

0.38 mm thick noncombustible material Signup and view all the answers

According to the National Building Code of Canada 2015, where are roof soffits permitted to project to the property line?

When facing a street, lane, or public thoroughfare Signup and view all the answers

According to the National Building Code of Canada 2015, what is required for roof soffits that project to less than 1.2 m from the property line, a lane, or an imaginary line between two buildings or fire compartments on the same property?

They must have no openings and be protected by a specified material Signup and view all the answers

According to the National Building Code of Canada 2015, which of the following is true about the construction of exposing building faces and exterior walls above an exposing building face?

They must have a fire-resistance rating of not less than 45 min and be constructed with metal or noncombustible cladding, except when the limiting distance is less than 0.6 m Signup and view all the answers

According to the National Building Code of Canada 2015, what is the maximum thickness allowed for the cladding used on the exposing building face and exterior walls above it when the limiting distance is less than 0.6 m?

2 mm Signup and view all the answers

According to the National Building Code of Canada 2015, when the limiting distance is equal to or greater than 0.6 m and less than 1.2 m, what are the requirements for the cladding used on the exposing building face and exterior walls above it?

All of the above Signup and view all the answers

According to the National Building Code of Canada 2015, when do the requirements regarding fire-resistance rating and type of cladding-sheathing assembly not apply to the exposing building face or projections from an exposing building face?

When the exposing building face or projections face a detached garage or accessory building that serves only one dwelling unit located on the same property Signup and view all the answers

According to the National Building Code of Canada 2015, what is the maximum distance allowed for combustible projections on the exterior of a wall that could expose an adjacent building to fire spread?

2.4 m Signup and view all the answers