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5.1 Recommend the ratio that will be used to obtain a smooth plaster finish for interior walls, using one bag of cement - NSC Civil Technology Construction - Question 5 - 2023 - Paper 1
Question 5
5.1 Recommend the ratio that will be used to obtain a smooth plaster finish for interior walls, using one bag of cement. 5.2 In chronological order, explain the fir... show full transcript
Worked Solution & Example Answer:5.1 Recommend the ratio that will be used to obtain a smooth plaster finish for interior walls, using one bag of cement - NSC Civil Technology Construction - Question 5 - 2023 - Paper 1
Step 1
Recommend the ratio that will be used to obtain a smooth plaster finish for interior walls, using one bag of cement.
Answer
The recommended ratio for achieving a smooth plaster finish using one bag of cement is typically 1 part cement to 4 parts sand. This mixture ensures a workable plaster that can be easily applied and finished smoothly.
Step 2
In chronological order, explain the first THREE steps to prepare a concrete floor to receive the screed.
Answer
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Water is added to the mixture: Before laying the screed, water is added to the screed mixture to activate a chemical reaction and achieve a workable plasticity.
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Ensuring a firm surface: The concrete base must be set to a firm surface, ensuring that it is level and clean, free from any debris that may interfere with the screed.
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Roughening the concrete base: Using a wire or nylon brush, the concrete base should be roughed to allow the screed to bond effectively.
Step 3
Explain the term monolithic screed.
Answer
Monolithic screed refers to a type of floor screed that is applied in a single layer or pour. It is done while the underlying concrete is still fresh, allowing a seamless and bonded finish, which enhances durability and overall performance compared to multiple layers.
Step 4
Explain how you will plaster the stop end of a wall in chronological order.
Answer
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Preparation of the stop end: First, prepare the stop end by ensuring that it is clean and free from any loose material.
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Apply bonding agent: A bonding agent may be applied to enhance adhesion before plastering.
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Plaster application: Using a trowel, apply the plaster mix to the stop end, ensuring even coverage and finishing it smoothly to create a professional appearance.
Step 5
State TWO advantages of a gauged arch.
Answer
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Enhanced aesthetic appeal: Gauged arches, which are constructed with purpose-made wedge-shaped bricks, provide a more attractive and streamlined finish compared to rough arches.
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Structural integrity: They distribute weight more evenly due to their design, which can enhance the overall stability and strength of the arch compared to other types.
Step 6
Draw in the ANSWER BOOK a neat sketch showing half of a wooden turning piece for a semi-circular arch with open laggings.
Answer
A neat sketch should depict half of a wooden turning piece for a semi-circular arch, ensuring that the curves and dimensions are precise and labeled clearly for clarity.
Step 7
ANSWER SHEET 5.7 contains the outlines of two consecutive brick courses of a one-and-a-half-brick pier built in English bond.
Answer
On the provided answer sheet, the two consecutive brick courses should be illustrated following English bond construction methods, displaying proper alignment and detailing the mortar joints.
Step 8