Cavity Walling Quiz

Shiny white crystals developing on the face of a brick wall are most likely to be what?

• Lime leaching

• Efflorescence

• Frost attack

• Iron staining

What is the point on site from which all datum levels are taken?

• Plumb line

• Profile

• Temporary level mark

• Temporary bench mark

Which tool would be used to accurately trim a cut brick?

• Scutch/comb hammer

• Brick hammer

• Club hammer

• Cold chisel

What would be used to accurately measure quantities of sand and cement for a mortar mix?

• Gauge box

• Large shovel

• Trowel

• Scoop

Using standard brick gauge, how many courses of brick would there be in a cavity wall 1577mm high?

• 18

• 20

• 21

• 23

What are timber profile boards used to show when setting out?

• The fall of drains to the main drainage

• Levels for door heads and window sills

• The position of foundations and walls

• The required pitch of the roof

Bricks and blocks should be protected by covering them with what?

• Hardboard

• Scaffold boards

• Polythene and hessian

• Plastic sacks

The horizontal lines of a structure represented in isometric projection are drawn at what angle?

• 30°

• 40°

• 45°

• 60°

A drawing which shows a slice through a structure to reveal hidden details is a what?

• Plan

• Section

• Sector

• Plot

If a concrete strip foundation is used in a situation where it needs to be strengthened with steel, what do we call it?

• Realigned

• Repositioned

• Rearranged

• Reinforced