Worksheets1 Plastering Interiors
Total questions: 20
Worksheet time: 10mins
In the construction industry, specifications are used to
complete repetitive work
show an aerial view of a building plot
give specific sizes and quality of finish
provide information about the architect.
Which one of the following would typically be found on a block plan?
Manufacturer’s technical data.
Types of plaster required.
Where to put expansion beads.
A view of plots and surrounding area.
Which of the following best describes a site plan?
An aerial view of the plot showing room sizes.
Documentation for repetitive work.
Information about how to assemble an item.
An explanation of site risk assessments.
A schedule is a document which shows
a repetitive work
b proof of purchase
c start and completion dates
d health and safety information.
If one bag covers 10m2, how many bags of plaster are required to plaster a room, including walls and ceiling, measuring 3m x 4m with a height of 2m?
3 bags.
4 bags.
5 bags.
6 bags.
What volume of sand would be required for a wall 10m x 3m high with a required depth of 20mm?
0.4m3
0.5m3
0.6m3
0.7m3
Which one of the following can cause flash setting?
Out of date plaster.
Mixing the material too slowly.
Using too much water.
Setting up mixing area outside.
Adding water to mixed plaster to re temper or knock back will
reduce the strength
extend the setting time
create efflorescence
give a dull finish.
Which one of the following statements about storing plaster is correct?
The most recently stored plaster should be used first.
Plaster should be stored off the ground and kept dry.
Plaster can be stored on the ground outside.
Damp conditions are ideal for storing plaster.
What is one possible effect of a badly prepared background for gypsum finish plaster?
Longer setting time.
Strong adhesion.
Poor adhesion.
It will not corrode.
What problem is most likely to occur if gypsum plaster is mixed incorrectly?
Cohesion.
Curing.
Corrosion.
Crazing.
Efflorescence is most likely to occur when
the finishing plaster is applied too thick
there is a build up of moisture and salt in the background
backing plaster is mixed with too little water
the background is not given a mechanical key.
Which of the following is the correct order when preparing background surfaces?
1 Mix plaster.
2 Apply bonding agent.
3 Sheet up area.
4 Brush down background.
1,3,4 and 2
2,3,4 and 1
4,3,2 and 1
3,4,2 and 1
Which tool should be used to provide a mechanical key on a lightweight gypsum plaster?
Scratcher comb.
Devil float.
Wooden lathe.
Joint rule.
When mixing plaster which sequence should be followed?
1 Use clean cold water.
2 Choose a suitable mixing area.
3 Ensure buckets are clean.
4 Protect the work area.
4, 1, 2, and 3
3, 4, 1, and 2
4, 2, 3, and 1
2, 4, 3, and 1
What is the maximum recommended thickness of a float coat on a brick or block background?
8mm.
9mm.
10mm.
11mm.
17 Plumb and dot is a reference to
applying plaster boards
producing flat surfaces
forming a mechanical key
three coat work.
The starting position when applying finishing plaster for a right-handed person would be
top right
top left
bottom left
bottom right
If applying a thin coat bead to an arris that is not plumb, the bead should be fixed using
a clout nails
b zinc screws
c plaster dabs
d drywall adhesive.
Why is Expanded Metal Lath (EML) used to cover a wall plate?
To improve drying time.
To control suction.
To reduce movement.
To provide key.
