5.1 Name the first step you will follow when plastering a wall - NSC Civil Technology Construction - Question 5 - 2022 - Paper 1
Question 5
5.1 Name the first step you will follow when plastering a wall.
5.2 Describe the main function of water when mixing plaster.
5.3 Name the mixing ratio of cement an... show full transcript
Worked Solution & Example Answer:5.1 Name the first step you will follow when plastering a wall - NSC Civil Technology Construction - Question 5 - 2022 - Paper 1
Step 1
Name the first step you will follow when plastering a wall.
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Answer
The first step I will follow when plastering a wall is to wet the wall. This ensures better adhesion of the plaster to the surface.
Step 2
Describe the main function of water when mixing plaster.
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Answer
The main function of water when mixing plaster is to make the mixture workable. It helps achieve the right consistency for easy application.
Step 3
Name the mixing ratio of cement and sand that is used in plaster for a wavy surface.
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The mixing ratio of cement to sand that is commonly used in plaster for a wavy surface is 1:3.
Step 4
For which type of plaster finish is the Tyrolean machine used?
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The Tyrolean machine is used for splatter dash finish or splatter finish plaster.
Step 5
Name TWO types of screed.
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Answer
Two types of screed are:
Dry screed
Monolithic screed
Step 6
Name the admixture you will add to reduce the water/cement ratio.
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The admixture that can be added to reduce the water/cement ratio is a water-reducing agent.
Step 7
Explain the purpose of the cavity.
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Answer
The purpose of the cavity is to ensure that water does not penetrate the inner wall, which helps in protecting it from moisture damage. Additionally, it provides insulation against heat, sound, and cold.
Step 8
Use a freehand drawing to differentiate between a nylon wall tie and a twisted pattern wall tie.
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Answer
The drawing should consist of two shapes:
Nylon Wall Tie - typically a straight piece with no complex shapes.
Twisted Pattern Wall Tie - characterized by its twisted form, giving it a stronger grip.
Step 9
What material is used for grouting between paving bricks?
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The material commonly used for grouting between paving bricks is plaster sand, river sand, dune sand, or a sand/cement slurry.
Step 10
Describe the reason for the construction failure in FIGURE 5.9 below.
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The construction failure can be attributed to poorly constructed edge restraints, which may have led to the displacement of paving bricks or inadequate support.
