Pregunta 1
Pregunta
1. How much mixed material is needed to complete a floor screed 5.000 m long by 4.000 m wide
and 0.050 m thick?
Respuesta
-
0.25 m3
-
0.5 m3
-
1 m3
-
1.5 m3
Pregunta 2
Pregunta
2. Tools and equipment for floor screeding will generally include:
Respuesta
-
sweeping brush, trowel, float, mixer, shovel
-
splash brush, small tool, gauger, trowel, float
-
spirit level, trowel, buckets, mixer, float
-
levelling equipment, trowel, float, shovel buckets, mixer
Pregunta 3
Pregunta
Plastic sheeting below the structural floor is the:
Respuesta
-
damp proof membrane
-
vapour barrier
-
moisture trap
-
aid to curing the floor
Pregunta 4
Pregunta
The type of cement used in floor screeds is:
Respuesta
-
Masonry Portland
-
Extra Portland
-
Rapid Portland
-
Ordinary Portland
Pregunta 5
Pregunta
Sands used for floor screeding:
Respuesta
-
should contain a high proportion of fine grains
-
should contain a high proportion of large grains
-
can be any type
-
should be sharp and well graded
Pregunta 6
Pregunta
Ready-mixed screeds are:
Respuesta
-
prepared off site and delivered as required
-
prepared after work for the following day
-
prepared in the morning for use during the day
-
used only for self-levelling floors
Pregunta 7
Pregunta
Screed rails or battens are used to:
Respuesta
-
help delivery of screed material to the workstation
-
assist in forming the main area of floor
-
tamp down the surface of the screed
-
form channels for drainage
Pregunta 8
Pregunta
The purpose of a damp proof membrane is to:
Respuesta
-
assist the passage of moisture
-
assist in the curing process
-
allow the screed to dry out quickly
-
prevent the passage of moisture
Pregunta 9
Pregunta
Cracking of large area floors may be reduced by:
Pregunta 10
Pregunta
Battens used as a guide for screeds may be:
Respuesta
-
set out from datum lines
-
laid at 50 mm depth
-
set out from base floor
-
laid to form 75 mm depth
Pregunta 11
Pregunta
The most accurate proportioning of floor screeding materials:
Respuesta
-
is by weight
-
is important near heavily trafficked areas
-
can be carried out using shovels
-
can be carried out using buckets
Pregunta 12
Pregunta
The correct consistency for floor screeding materials is:
Respuesta
-
as dry as possible
-
slurry like
-
semi wet
-
semi dry
Pregunta 13
Pregunta
Mixing of screed material:
Respuesta
-
does not have to be thorough as it will be spread by shovel
-
needs to be consistent or wear will take place
-
should be carried out as slowly as possible
-
can take place after water has been added
Pregunta 14
Pregunta
Compacting screeds results in a:
Respuesta
-
lightweight screed
-
quicker set screed
-
more dense screed
-
slower set screed
Pregunta 15
Pregunta
Compacting can be carried out with a:
Respuesta
-
screed rail
-
datum
-
rule or float
-
level
Pregunta 16
Pregunta
High volumes of ventilation:
Respuesta
-
will aid the setting process
-
will not affect the screeds after laying
-
will allow the cement to harden quickly
-
may make the surface of the screed dusty
Pregunta 17
Pregunta
The finish on a floor screed:
Respuesta
-
is not important as it will all be covered up
-
is important as it may show through the final covering
-
can be completed the next day
-
can be completed by the floor layer with the finish
Pregunta 18
Pregunta
Laying polythene sheet on the floor screed after laying will:
Respuesta
-
act as an accelerator to the set
-
produce an even surface
-
allow the cement to set naturally
-
keep the floor soft for the next process
Pregunta 19
Pregunta
The purpose of curing is to:
Respuesta
-
allow the cement to set and harden over a long period
-
produce an even surface
-
produce a lightweight screed
-
aid compaction to take place
Pregunta 20
Pregunta
Where drainage outlets are fitted:
Respuesta
-
the floor must be laid from this point
-
they can be repositioned later
-
the floor can be altered to fit when finish is applied
-
the drainage contractor will alter them to suit