1.1 Choose a description from COLUMN B that matches an item in COLUMN A - NSC Civil Technology Civil Services - Question 1 - 2019 - Paper 1
Question 1
1.1 Choose a description from COLUMN B that matches an item in COLUMN A.
Write only the letter (A–G) next to the question numbers (1.1.1 to 1.1.5) in the ANSWER BOOK... show full transcript
Worked Solution & Example Answer:1.1 Choose a description from COLUMN B that matches an item in COLUMN A - NSC Civil Technology Civil Services - Question 1 - 2019 - Paper 1
Step 1
1.1.1 Galvanising
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Answer
The correct description for Galvanising is G, which refers to 'metal dipped in zinc'. This process provides a protective zinc coating to prevent rusting.
Step 2
1.1.2 Electroplating
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Answer
The correct description for Electroplating is E, which stands for 'coating mild steel with a thin layer of another material by electrolysis'. This process is commonly used to enhance corrosion resistance.
Step 3
1.1.3 Curing
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Answer
The appropriate description for Curing is C, as it 'protects wood and other material against natural decay', typically by means of a chemical treatment.
Step 4
1.1.4 Paint
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Answer
The correct answer for Paint is A, which is described as 'keeping freshly cast concrete damp'. This process aids in curing by preventing rapid moisture loss.
Step 5
1.1.5 Powder coating
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Answer
The fitting description for Powder coating is D, which highlights it as 'a plastic finish on metal surfaces, applied with a compressed air spray gun'. It provides a durable, weather-resistant finish.
Step 6
1.2 Explain ONE cause of injuries when handling materials.
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Answer
One cause of injuries when handling materials is improper lifting techniques. When heavy materials or loads are not lifted/lowered correctly, this can lead to strains or sprains.
Step 7
1.3 Give the angle/ratio at which a ladder should be placed against a wall.
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Answer
A ladder should typically be placed at an angle of 75 degrees or a ratio of 1:4 against a wall to ensure stability and safety.
Step 8
1.4 Explain TWO safety precautions that must be followed when using a builder's hoist.
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Answer
Ensure that only a qualified person operates the hoist to prevent accidents.
Do not overload the hoist, as this can compromise safety and lead to equipment failure.
Step 9
1.5.1 Identify both A and B.
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Answer
A = Laser level
B = Dumpy level
Step 10
1.5.2 Name ONE use of A and B respectively.
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Answer
A (Laser level) is used for determining levels and slopes in construction, while B (Dumpy level) is employed to find differences in height and level during construction.
Step 11
1.6.1 Identify the fastener that is used in D.
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Answer
The fastener used in D is a Rawl bolt.
Step 12
1.6.2 Describe the steps in A–D above in your ANSWER BOOK.
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A: Drill a hole of the required diameter and depth.
B: Remove debris and insert the sleeve into the hole.
C: Insert the bolt with the fixture through the area to be secured.
D: Tighten the bolt securely to ensure it is held firmly in place.
Step 13
1.6.3 Justify the use of this fastener to secure the bracket of a heavy gate to a wall.
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Answer
Rawl bolts are ideal for securing brackets for heavy gates due to their ability to provide strong holding power in wall materials, ensuring stability and resistance to pull-out forces.
