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Complete the following sentence by filling in the TWO missing accessories for manholes - NSC Civil Technology Civil Services - Question 3 - 2019 - Paper 1

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Complete the following sentence by filling in the TWO missing accessories for manholes. Write only the word(s) next to the question numbers (3.1.1 to 3.1.2) in the A... show full transcript

Worked Solution & Example Answer:Complete the following sentence by filling in the TWO missing accessories for manholes - NSC Civil Technology Civil Services - Question 3 - 2019 - Paper 1

Step 1

3.1.1 Complete the following sentence

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Answer

The accessories used for a manhole are step irons.

Step 2

3.1.2 Complete the following sentence

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Answer

The accessories used for a manhole are cast iron lids.

Step 3

3.2.1 Identify A

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Answer

A is identified as a wedge.

Step 4

3.2.2 State the depth

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Answer

The depth at which the sides of an excavation in saturated ground will start to cave in is 300 mm.

Step 5

3.3.1 Use the drawing and deduce the number of sanitary fixtures needed

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Answer

Based on the drawing, the number of sanitary fixtures needed for this house is 3.

Step 6

3.3.2 Use the drawing and deduce the number of waste-water fixtures needed

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Answer

The number of waste-water fixtures needed for the drainage system is 2.

Step 7

3.3.3 Calculate the following - Volume of the tank in m³

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Answer

The volume of the tank in m³ is calculated using the formula:

Volume=Limesbimesh=2.7imes2.7imes2.7=19.68extm3Volume = L imes b imes h = 2.7 imes 2.7 imes 2.7 = 19.68 ext{ m}^3

Step 8

3.3.3 Calculate the following - Volume of the tank in litres

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Converting the volume to litres:

Volume=19.68extm3imes1000=19680extlitresVolume = 19.68 ext{ m}^3 imes 1000 = 19680 ext{ litres}

Step 9

3.4.1 Attached to the safety harness and lifeline

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Answer

The term is D-Clip.

Step 10

3.4.2 Helps the worker to move down the lifeline

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Answer

The term is rope grab.

Step 11

3.4.3 Must be worn when working in a deep manhole

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Answer

The term is breathing apparatus.

Step 12

3.4.4 Can be used to transfer levels

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Answer

The term is transparent pipe level.

Step 13

3.4.5 When the cover is removed, the area must be cordoned off

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Answer

The term is manhole.

Step 14

3.5 Identify A, B and C

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Answer

A corresponds to spirit level, B corresponds to long straight edge, and C corresponds to steel peg/peg.

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