6.1 Choose a description from COLUMN B that matches the item in COLUMN A - NSC Civil Technology Civil Services - Question 6 - 2024 - Paper 1
Question 6
6.1 Choose a description from COLUMN B that matches the item in COLUMN A. Write only the letter (A-N) next to the question numbers (6.1.1 to 6.1.5) in the ANSWER BO... show full transcript
Worked Solution & Example Answer:6.1 Choose a description from COLUMN B that matches the item in COLUMN A - NSC Civil Technology Civil Services - Question 6 - 2024 - Paper 1
Step 1
6.1.1 Chlorine
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Answer
The description that matches 'Chlorine' is 'C', which indicates the property of solder.
Step 2
6.1.2 900 mm
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The description that matches '900 mm' is 'E', which refers to the recommended height for mounting a washbasin.
Step 3
6.1.3 Ductile and low melting point
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The description that matches 'Ductile and low melting point' is 'A', which refers to the property of copper.
Step 4
6.1.4 Sal-ammoniac
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The description that matches 'Sal-ammoniac' is 'F', which indicates a substance used to clean a soldering iron after it has been heated.
Step 5
6.1.5 800 mm
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The description that matches '800 mm' is 'B', referring to the recommended height for mounting a sink.
Step 6
6.2 Distinguish between PVC pipes and cast-iron pipes in terms of weight.
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PVC pipes are lightweight, whereas cast iron pipes are considerably heavier.
Step 7
6.3 You are required to join the soil water pipe from the water closet to the sewage pipe at the outside of the wall with a 90° bend joint.
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To join the soil water pipe to the sewage pipe using a 90° bend, ensure that both pipes are properly aligned. Use appropriate fittings that allow for a secure connection and avoid leaks.
Step 8
6.4.1 Name ONE material that is used to manufacture A.
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One material that can be used to manufacture A is ceramic.
Step 9
6.4.2 Identify B.
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B is identified as the waste outlet or waste water outlet.
Step 10
6.4.3 Name ONE device that can be used to seal the water inside the washbasin.
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A rubber plug can be used to seal the water inside the washbasin.
Step 11
6.4.4 Describe the purpose of C.
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The purpose of C is to direct overflowing water from the washbasin to the waste outlet, preventing spillage.
Step 12
6.4.5 Explain the purpose of D.
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The purpose of D is to trap water, preventing odors and sewer gases from entering the living space.
Step 13
6.5.1 What determines the allowance for sheet metal joints?
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The allowance for sheet metal joints is determined by the thickness of the material and the discretion of the worker.
Step 14
6.5.2 How many millimetres should be added to the allowance if snips are used for cutting the sheet metal?
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If snips are used for cutting the sheet metal, 1 mm should be added to the allowance.
Step 15
6.5.3 On which side of the scribed line should you cut when cutting out a pattern on sheet metal?
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You should cut outside of the marked pattern on the waste side of the pattern.
Step 16
6.5.4 Name TWO types of joining methods that will be suitable to join the seams.
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Two types of joining methods suitable for joining the seams are pop rivet joints and soldered joints.
Step 17
6.6 Describe the process of installing a bracket onto a masonry wall with a chemical anchor into a pre-drilled hole.
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The process involves mixing the chemical resin with a hardening agent, inserting it into the pre-drilled hole, placing the bracket in position, and fixing it with a nut.
Step 18
6.7 Draw, in the ANSWER BOOK, a neat sectional top view of a draw-off valve for a vacuum tank that is located against the kerb of the road.
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Draw the outlet pipe connected to the valve and the construction housing around the valve, ensuring that all components are accurately represented.
Step 19
6.8.1 Name the components that are omitted at A and B.
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The components omitted at A are the Ventilation pipe (VP) and at B the Inspection eye (IE).
Step 20
6.8.2 Draw the correct symbol for pipe C.
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The correct symbol for pipe C is a series of parallel lines with arrows indicating the flow direction.
Step 21
6.8.3 Name the TWO chambers in D.
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The two chambers are the Settling chamber and the Discharge chamber.
Step 22
6.8.4 Identify component E.
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Component E is a French drain.
Step 23
6.8.5 Name the component that has to be installed at F.
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The component that has to be installed at F is a Rodding eye or RE.
