NBC 2015 - Section 9.20

Play an AI-generated podcast conversation about this lesson

According to the National Building Code of Canada 2015, what is the permitted tolerance for mortar joint thickness in burned clay brick and concrete masonry units?

5 mm (correct)

10 mm

15 mm

20 mm

According to the National Building Code of Canada 2015, how should solid masonry units be laid?

With partial head and bed joints

With no head and bed joints

With full head and bed joints (correct)

With staggered head and bed joints

According to the National Building Code of Canada 2015, how should hollow masonry units be laid?

With mortar applied to head and bed joints of both inner and outer face shells (correct)

With mortar applied only to the bed joints

With mortar applied only to the head joints

Without any mortar

According to the National Building Code of Canada 2015, where should vertically aligned webs of hollow masonry units be laid in a full bed of mortar?

Under the starting course, in all courses of columns, and where adjacent to cells or cavities that are to be filled with grout Signup and view all the answers

According to the National Building Code of Canada 2015, what should be the minimum thickness of a masonry wall in relation to the wall it supports?

Equal to the thickness of the wall it supports Signup and view all the answers

According to the National Building Code of Canada 2015, what is the minimum thickness of masonry exterior walls in 1-storey buildings and the top storeys of 2- and 3-storey buildings?

140 mm Signup and view all the answers

According to the National Building Code of Canada 2015, what is the minimum width of units for cavity walls with raked joints?

90 mm Signup and view all the answers

According to the National Building Code of Canada 2015, what is the minimum thickness of cavity walls above the supporting base for the top 7.6 m?

230 mm Signup and view all the answers

According to the National Building Code of Canada 2015, what is the maximum depth of any chase or recess in a wall?

One third the thickness of the wall Signup and view all the answers

According to the National Building Code of Canada 2015, what is the minimum distance that chases and recesses should be from any pilaster, cross wall, buttress, or other vertical element providing required lateral support for the wall?

600 mm Signup and view all the answers

According to the National Building Code of Canada 2015, what is the maximum vertical spacing for glass block joint reinforcement for units 200 mm or less in height?

600 mm Signup and view all the answers

According to the National Building Code of Canada 2015, what is the maximum horizontal spacing for glass block joint reinforcement for units higher than 200 mm?

400 mm Signup and view all the answers

According to the National Building Code of Canada 2015, what is the maximum spacing of ties for masonry veneer that is 75 mm or more in thickness and resting on a bearing support?

500 mm Signup and view all the answers

According to the National Building Code of Canada 2015, what is the maximum spacing of individual wire ties for tying the inner and outer wythes of cavity walls?

600 mm Signup and view all the answers

According to the National Building Code of Canada 2015, what is the maximum spacing of metal ties for tying 2 or more wythes in walls other than cavity walls and masonry veneer/masonry backing walls?

600 mm Signup and view all the answers

According to the National Building Code of Canada 2015, what is the minimum length of end bearing of beams supported on masonry?

90 mm Signup and view all the answers

According to the National Building Code of Canada 2015, what is the minimum depth of solid masonry or concrete provided under beams or columns supported on masonry walls where the thickness of the masonry wall or wythe is less than 190 mm?

190 mm Signup and view all the answers

According to the National Building Code of Canada 2015, what is the maximum projection allowed for masonry veneer of solid masonry units resting on a bearing support?

One third of the thickness of the veneer Signup and view all the answers

According to the National Building Code of Canada 2015, what is the minimum percentage of wall surface area that the bonding units shall comprise when wythes are bonded together with masonry units?

4% Signup and view all the answers

According to the National Building Code of Canada 2015, what is the maximum vertical spacing allowed for bonding units in brick masonry?

600 mm Signup and view all the answers

Which of the following is a requirement for fastening devices for flashing?

They must be resistant to corrosion Signup and view all the answers

Where should flashing be installed in masonry and masonry veneer walls?

Beneath jointed masonry window sills Signup and view all the answers

What is the purpose of flashing in masonry and masonry veneer walls?

To prevent water penetration Signup and view all the answers

Which of the following is NOT a location where flashing should be installed?

Over the heads of window or door openings Signup and view all the answers

What is the purpose of weep holes in masonry and masonry veneer walls?

To provide a drainage path for water Signup and view all the answers

According to the National Building Code of Canada 2015, which of the following is true about anchoring wood-frame walls to masonry walls?

Wood-frame walls shall be anchored to masonry walls with steel rods spaced not more than 900 mm apart vertically. Signup and view all the answers

According to the National Building Code of Canada 2015, what is the minimum diameter for anchor bolts used to anchor wood-frame roof systems to masonry walls?

12.7 mm Signup and view all the answers

According to the National Building Code of Canada 2015, how should corbelling be constructed?

Corbelling should consist of solid masonry units with a horizontal projection of any unit not exceeding 25 mm and a total projection not exceeding one third of the total wall thickness. Signup and view all the answers

According to the National Building Code of Canada 2015, what is the maximum projection of masonry veneer beyond the supporting base?

25 mm Signup and view all the answers

According to the National Building Code of Canada 2015, what is the minimum thickness for concealed flashing made of aluminum?

0.05 mm Signup and view all the answers

True or false: Fastening devices for flashing should be compatible with the flashing with respect to galvanic action.

True Signup and view all the answers

True or false: Flashing should be installed over the heads of glass block panels.

True Signup and view all the answers

True or false: Flashing should be installed beneath weep holes.

True Signup and view all the answers