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WorksheetsOcc 132 Repair and maintain masonry structures
Total questions: 15
Worksheet time: 15mins
Loud noises can cause loss of hearing
depending on the level of exposure. This may be accompanied by;
Tinnitus
Silicosis
Asbestosis
Dermatitis
What is the process for mixing new mortars
to match existing mortars?
Mix 1:6 batch and add cement dye
Mix several batches to match consistency and colour
Mix 6:1:1 batch, add lime and plasticiser
Mix 1:1:5 batch and contact a brick tinting company
How is the area of a circle
calculated?
Πr2
Π x D
Π x D x R
Π - D x C
The reasons for wearing safety gloves are because they reduce;
Pinches
Circulation and blood pressure
Scratches and cuts
Bruising and inflammation
When replacing an external lintel, to
temporary support the upper floor joists, the FIRST action would be to;
Place nails into prop to stop moving
Check run of joists
Plumb props
Mark lintel ensuring equal bearings
Which other tool is used best with a finger trowel when repointing mortar joints?
Board
Chariot
Trowel
Hawk
Before cutting an opening in an existing wall
with a disc cutter, what is the most important factor to consider?
Damage to the surrounding wall
Size and type of lintel
Position of services
Prop and needle position
Which damp proof replacement requires the use of liquid silicone?
Engineering brick
Electro osmosis
Injection
Physical
When extending a new wall from the middle of an
existing wall, what is the best method to use?
Indenting
Corbelling
Wall starter
Coring
Which decorative feature is formed when the bricks are laid 45 degrees to the face line?
Corbels
Soldiers
Dog toothing
Dentil
What is the correct depth of a raked out joint
that will be pointed at a later date?
5mm - 9mm
10mm - 14mm
15 - 19mm
20mm - 24mm
What action should be taken if the wrong size bricks been delivered to site?
Return them
Store them
Use them
Discard them
In what decade was the use of all asbestos banned in the UK?
1960's
1970's
1980's
1990's
Whilst replacing a number of bricks in a panel, what is the MOST cost effective procedure for protecting existing work from cracking?
Needles and pins
Props and masonry support
Timber and folding wedges
Scaffold poles and packers
A plastered internal timber lintel in a 19th century house requires replacing. Which lintel is the most suitable replacement?
Timber
Cavity
Concrete
Angle iron
