QUESTION 3: CONSTRUCTION ASSOCIATED WITH CIVIL SERVICES, OHSA AND QUANTITIES (SPECIFIC)
FIGURE 3.1 below shows safety equipment - NSC Civil Technology Civil Services - Question 3 - 2023 - Paper 1
Question 3
QUESTION 3: CONSTRUCTION ASSOCIATED WITH CIVIL SERVICES, OHSA AND QUANTITIES (SPECIFIC)
FIGURE 3.1 below shows safety equipment.
3.1.1 Identify A and B.
3.1.2 To ... show full transcript
Worked Solution & Example Answer:QUESTION 3: CONSTRUCTION ASSOCIATED WITH CIVIL SERVICES, OHSA AND QUANTITIES (SPECIFIC)
FIGURE 3.1 below shows safety equipment - NSC Civil Technology Civil Services - Question 3 - 2023 - Paper 1
Step 1
3.1.1 Identify A and B.
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Answer
A is the safety harness, and B is the locking snap hook or clip.
Step 2
3.1.2 To what should B be attached?
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B should be attached to a secure anchor point.
Step 3
3.1.3 Name ONE safety item that a worker must wear in order to prevent infections when working with raw sewage.
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Answer
One safety item is safety goggles.
Step 4
3.2.1 Identify A to C.
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A is the benching, B is the branch channel, and C is the inlet or inlet pipe.
Step 5
3.2.2 Explain TWO faults that are illustrated in the installation of this manhole.
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Answer
The two faults are: 1. The walls are not double-skinned. 2. The concrete bricks are not bonded properly.
Step 6
3.2.3 Name a type of manhole that is NOT built with bricks.
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A concrete ring manhole.
Step 7
3.2.4 A manhole cover is removed for maintenance. Describe ONE safety precaution that needs to be applied to ensure the safety of pedestrians.
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One safety precaution is to cordon off the area and post warning signs.
Step 8
3.3 Calculate the fall of pipe A.
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Answer
The fall of pipe A can be calculated using the formula:
ext{Fall} = rac{ ext{Length}}{ ext{Gradient}}
Given the total length is 2 m and the gradient is 1:40:
ext{Fall} = rac{2000}{40} = 50 ext{ mm}
Step 9
3.4 Describe the term backfilling.
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Backfilling is the process of putting soil back into a trench or excavation after installation of utilities or structures.
Step 10
3.5 Use the information in FIGURE 3.5 and take off the quantities of materials.
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