Masonary

Question 1

What are the height limitations of Masonry walls as per AS4773 from finished ground level?

Answer 1

8.5m overall height
3.0m per storey

Question 2

Why is it important to have your sub-floor vents line up with each other?

Answer 2

Cross ventilation

Question 3

What mortar types are required for a marine area?

Answer 3

M3

Question 4

Why are articulation joints used in Masonry?

Answer 4

To reduce cracking and distress caused by movement

Question 5

What are the wall ties spacing requirements for Masonry Veneer, as per the NCC 2022?

Answer 5

450mm Stud 450mm Horizontal, 600mm Vertical

600mm Stud 600mm Horizontal, 400mm Vertical

Question 6

Are articulation joints required for A & S class sites?

Answer 6

No

Question 7

What is the maximum bearing lengths for lintels?

Answer 7

Up to 1000mm - 100mm bearing per
Over 1000mm - 150mm bearing per

Question 8

How far apart can Articulation joints be located with openings LESS than 900 x 900mm

Answer 8

6000m centres within 4500mm but not closer than 470mm to all corners

Question 9

How far apart can Articulation joints be located with openings MORE than 900 x 900mm

Answer 9

5000m centres for walls with openings more than 900mm x 900mm, not more than 1200mm away from openings

Question 10

When sealants are used for control joints, what are the requirements?

Answer 10

Sealant depth no greater than 2/3 of joint width

Question 11

How many days should brick lintels be propped up for?

Answer 11

7 Days

Question 12

What is the maximum overhang for bricks on a steel lintel?

Answer 12

25mm

Question 13

How far apart can Articulation joints be located?

Answer 13

6000m centres for walls with openings less than 900mm x 900mm, within 4500mm but not closer than 470mm to all corners
5000m centres for walls with openings more than 900mm x 900mm, not more than 1200mm away from openings

Question 14

What is the difference between masonry veneer walls & cavity masonry walls?

Answer 14

Masonry veneer is an outer leaf veneer tied to frame supporting loads.
Cavity masonry is laod bearing

Question 15

What is the minimum cavity width for articulated masonry veneer?

Answer 15

35mm, measured from conduit, insulation or services

Question 16

Name 3 cavity flashing installation requirements? Turn Up, Fixings requirements and minimum brick embedment

Answer 16

Turned up 150mm min up frame

Fixed at 600mm cts

Embedded min 25mm into brickwork

Question 17

What is the maximum spacing for weepholes?

Answer 17

1200mm cts

Not required over openings less than 1200mm

Question 18

At what height must weepholes be located from Ground Level?

Answer 18

150mm to ground level

75mm paved, concreted or landscaped areas that slope away from wall

50mm paved, concreted or landscaped areas protected by a carport, verandah etc

Question 19

Openings in Masonry veneer not more than ……… do not require a steel lintel provided the opening is adequately supported?

Answer 19

500mm

Question 20

What is a brick cavity minimum and maximum

Answer 20

35mm minimum