1.1 Choose the correct word(s) from those given in brackets - NSC Civil Technology Construction - Question 1 - 2021 - Paper 1
Question 1
1.1 Choose the correct word(s) from those given in brackets. Write only the word(s) next to the question numbers (1.1.1 to 1.1.5) in the ANSWER BOOK, e.g. 1.1.6 case... show full transcript
Worked Solution & Example Answer:1.1 Choose the correct word(s) from those given in brackets - NSC Civil Technology Construction - Question 1 - 2021 - Paper 1
Step 1
1.1.1 (Oil or water-based paint/Silicone/Acid) is used to protect metal against corrosion.
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Answer
The correct word is Oil or water-based paint. This type of paint is effective for preventing corrosion on metal surfaces.
Step 2
1.1.2 Curing (increases the strength of concrete/increases the density of concrete/allows concrete to set faster).
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The correct choice is increases the strength of concrete. Curing is essential to ensure that the concrete achieves its maximum strength.
Step 3
1.1.3 Electroplating can be applied using (electrodes/electro jacks/electrolysis).
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The appropriate method is electrolysis. This process involves using an electrical current to deposit a layer of metal onto a surface.
Step 4
1.1.4 Powder coating is the process of applying a layer of (plastic/paint/zinc) to a metal.
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The correct word is plastic. Powder coating utilizes a dry powder that is applied and cured to provide a hard finish.
Step 5
1.1.5 Galvanising is the process of applying a (zinc/copper/tin) coating to the base of metals.
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The suitable choice is zinc. Galvanising involves coating metal with zinc to protect it from corrosion.
Step 6
1.2.1 Name the maximum angle of A.
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Answer
The maximum angle A is 42/42 degrees or can be 50/50 degrees, based on the given diagram, but '42 degrees' is typically used for staircase designs.
Step 7
1.2.2 How will you ensure the safety of workers when using the treads?
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Answer
To ensure safety, it is crucial to ensure stair rails/handrails/railings or balustrades are in place. This will prevent falls and ensure stability while using the staircase.
Step 8
1.2.3 Explain the purpose of metal pan treads as part of the construction of stairs.
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Metal pan treads serve to keep concrete in position, act as formwork, and enable the filling of concrete. They provide a sturdy base for the stairs.
