NBC 2015 - Section 9.15-20

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According to the National Building Code of Canada 2015, what is the required thickness of concrete slabs, excluding the concrete topping?

10 mm

75 mm (correct)

20 mm

100 mm

What is the purpose of a bond-breaking material in the construction of concrete slabs?

To prevent water ingress

To create a physical separation between the slab and footings or rock (correct)

To increase the strength of the slab

To provide a smooth and even surface finish

Which type of floors-on-ground do not require the installation of granular material beneath them?

All floors-on-ground require granular material beneath them

Floors in garages or carports

Floors in dwelling units

Floors in industrial buildings (correct)

What is the minimum amount of coarse clean granular material that should be placed beneath floors-on-ground, according to the National Building Code of Canada 2015?

100 mm (D) Signup and view all the answers

What is the required surface finish for concrete floor slabs, according to the National Building Code of Canada 2015?

Trowelled smooth and even (A) Signup and view all the answers

According to the National Building Code of Canada 2015, what is the minimum outside diameter for steel pipe columns?

73 mm (B) Signup and view all the answers

According to the National Building Code of Canada 2015, when are columns not required to have lateral support?

Both A and B (A) Signup and view all the answers

According to the National Building Code of Canada 2015, what is the minimum width or diameter for a wood column?

140 mm (B) Signup and view all the answers

According to the National Building Code of Canada 2015, what is the minimum size for unit masonry columns?

290 mm by 290 mm (C) Signup and view all the answers

According to the National Building Code of Canada 2015, what is the minimum size for solid concrete columns?

200 mm by 200 mm (C) Signup and view all the answers

According to the National Building Code of Canada 2015 Volume 2 Division B, what is the minimum size requirement for an access opening to a crawl space serving a single dwelling unit?

500 mm by 700 mm (A) Signup and view all the answers

According to the National Building Code of Canada 2015 Volume 2 Division B, how should vents in unheated crawl spaces be designed?

Uniformly distributed on opposite sides of the building (B) Signup and view all the answers

According to the National Building Code of Canada 2015 Volume 2 Division B, what is the minimum ground cover requirement for an unheated crawl space?

0.10 mm polyethylene (C) Signup and view all the answers

According to the National Building Code of Canada 2015 Volume 2 Division B, what is the minimum thickness requirement for concrete covering the ground cover in a heated crawl space?

50 mm (C) Signup and view all the answers

According to the National Building Code of Canada 2015 Volume 2 Division B, what is the maximum surface flame-spread rating allowed for enclosing material in crawl spaces used as warm-air plenums?

150 (C) Signup and view all the answers

According to the National Building Code of Canada 2015, what is the minimum required vent area for an insulated ceiling area when the roof slope is less than 1 in 6 or in roofs that are constructed with roof joists?

1/150 of the insulated ceiling area (D) Signup and view all the answers

In accordance with the National Building Code of Canada 2015, how much space should be provided between the top of the insulation and the underside of the roof sheathing, except at the junction of sloped roofs and exterior walls where preformed baffles are used to contain the insulation?

63 mm (B) Signup and view all the answers

According to the National Building Code of Canada 2015, what is the minimum dimension of the unobstructed air space required between the insulation and the underside of the roof sheathing at the junction of sloped roofs and exterior walls, where preformed baffles are used to contain the insulation?

25 mm (B) Signup and view all the answers

According to the National Building Code of Canada 2015, what is the minimum area required for an access hatch in an attic or roof space?

0.32 m2 (A) Signup and view all the answers

According to the National Building Code of Canada 2015, what is the maximum height of flat insulating concrete form walls not in contact with the ground?

3 m (D) Signup and view all the answers

Which one of these is true about earthquake reinforcement for loadbearing elements of masonry buildings in locations where the spectral response acceleration, $Sa(0.2)$, is greater than 0.55?

Reinforcement is required, and the amount is specified in Subsection 9.20.15. (C) Signup and view all the answers

Which one of these is true about earthquake reinforcement for loadbearing elements of masonry buildings in locations where the spectral response acceleration, $Sa(0.2)$, is between 0.35 and 0.55?

Reinforcement is required, but the amount is not specified. (D) Signup and view all the answers

Which one of these is true about earthquake reinforcement for loadbearing elements of masonry buildings in locations where the spectral response acceleration, $Sa(0.2)$, is less than or equal to 0.35?

No reinforcement is required. (B) Signup and view all the answers

Which subsection provides the requirements for earthquake reinforcement for walls other than those described in Sentence (1) or where the masonry walls or insulating concrete form walls not in contact with the ground are designed for specified loads on the basis of ultimate and serviceability limit states?

Subsection 4.3.2. (A) Signup and view all the answers

Which note provides additional information about earthquake reinforcement requirements?

Note A-9.20.1.2. (B) Signup and view all the answers

According to Section 9.15.5.1, what are the three options for capping the foundation walls of hollow masonry units supporting floor joists?

a) not less than 50 mm of concrete, b) solid masonry units that are 100% solid and not less than 50 mm high, or c) semi-solid or hollow solid masonry units that have the top course completely filled with mortar, grout or concrete (D) Signup and view all the answers

In which situations is capping not required for the foundation walls of hollow masonry units supporting floor joists?

a) in localities where termites are not known to occur, b) when the joists are supported on a wood plate not less than 38 mm by 89 mm, and c) when the siding overlaps the foundation wall not less than 12 mm (A) Signup and view all the answers

How much depth of solid masonry is required beneath beams supported on masonry according to Section 9.15.5.2?

Not less than 190 mm (C) Signup and view all the answers

What size should pilasters be under beams that frame into unit masonry foundation walls 140 mm or less in thickness according to Section 9.15.5.3?

Not less than 90 mm by 290 mm (D) Signup and view all the answers

What is the requirement for parging concrete block foundation walls on the exterior face below ground level according to Section 9.15.6.1?

Concrete block foundation walls shall be parged on the exterior face below ground level as required in Section 9.13 (D) Signup and view all the answers

NBC 2015 - Section 9.15-20 - 01

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