General Building Repairs 235 pt 1

What is the main consideration when mixing mortar used to replace damaged brickwork?

• Workability of mortar ?

• Match the existing mortar ?

• Be weaker than the existing mortar ?

• Be stronger than the existing mortar ?

Where should breathable felt be used:

• In the roof ?

• Over windows ?

• Under the floor ?

• In a concrete raft ?

Which one of the following is likely to be caused by settlement of a building:

• Cracking ?

• Spalling ?

• Staining ?

• Efflorescence ?

What is the cause of efflorescence on the face of a wall:

• Poor jointing of brickwork ?

• Poor protection from weather ?

• Use of excessive plasticiser ?

• Use of excessive retarder ?

The PPE shown in the image below protects the user from breathing in harmful:

• gasses ?

• liquids ?

• vapours ?

• particles ?

What is the best way to minimise hazards when replacing roof trusses:

• Use less labour to lift trusses ?

• Use mechanical lifting equipment ?

• Use lighter but stronger materials ?

• Use additional labour to lift trusses ?

How many floor tiles are required for the floor plan shown in the image below using 600 mm x 600 mm tiles:

• 32 ?

• 42 ?

• 52 ?

• 62 ?

How much concrete is required for the floor shown in the image below at a depth of 200 mm:

• 0.12 m3 ?

• 1.2 m3 ?

• 12 m3 ?

• 120 m3 ?

What safety checks should be carried out before using a pole ladder:

• Count the rungs ?

• Look for defects ?

• Ensure it is made from timber ?

• Ensure it is made from aluminium ?

What should an operative do if a steel trestle scaffold has its height adjustment pin missing:

• Use a nail ?

• Use a screwdriver ?

• Use it without adjusting it ?

• Report it to the Supervisor ?

• Ignore it and put myself and others at risk ?