3.1 Give ONE word/term for each of the following statements by choosing a word/term from the list - NSC Civil Technology Civil Services - Question 3 - 2020 - Paper 1
Question 3
3.1 Give ONE word/term for each of the following statements by choosing a word/term from the list. Write only the word/term next to the question numbers (3.1.1 to 3.... show full transcript
Worked Solution & Example Answer:3.1 Give ONE word/term for each of the following statements by choosing a word/term from the list - NSC Civil Technology Civil Services - Question 3 - 2020 - Paper 1
Step 1
3.1.1 The sides of the excavations are firm enough to support the soil.
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Answer
Hard ground.
Step 2
3.1.2 The sides of the excavations may cave in and must be supported by poling boards.
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Moderately firm ground.
Step 3
3.1.3 The sides of the excavations must be supported by walling boards and strata if the soil has loose patches.
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Loose and waterlogged ground.
Step 4
3.1.4 Solid timbering or shutter board panels must be placed very close together so that muddy soil does not filter through the openings.
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OHS.
Step 5
3.1.5 Orange warning signals must be visible at all times at excavations.
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PPE.
Step 6
3.2 Name TWO methods of backfilling trenches.
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Compaction/Fill and compact. 2. Jetting/Flowable fill.
Step 7
3.3.1 Identify the type of bond used to build the wall.
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English bond.
Step 8
3.3.2 Name the brick indicated by A.
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Queen closer.
Step 9
3.3.3 Give the width of brick A in mm.
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55 mm.
Step 10
3.4 State any TWO safety and hygiene measures that they must adhere to in order to prevent infections.
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Wear safety goggles. 2. Wear gloves.
Step 11
3.5.1 The Occupational Health and Safety Act, 1993 (Act 85 of 1993) (protects/prohibits) workers who enter confined spaces, such as manholes.
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Protects.
Step 12
3.5.2 Only (competent/educated) persons are allowed to work in a manhole.
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Competent.
Step 13
3.7.1 Volume of the tank in m³.
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The volume of a cylinder is given by the formula: V = rac{22}{7} r^2 h, where r is the radius (0.9 m) and h is the height (2.8 m) yielding a volume of 7.13 m³.
Step 14
3.7.2 Volume of water in the tank in litres.
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To convert to litres, multiply the volume in cubic meters by 1,000. Thus,\ 7.13\ m³ \times 1,000 = 7,130\ litres.
