NSC Civil Technology Civil Services Volume and area calculations: 3.1 Give ONE word/term for each

Question

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 3.1.5) in the ANSWER BOOK, e.g. 3.1.1 hard ground.

3.1.1 The sides of the excavations are firm enough to support the soil.
3.1.2 The sides of the excavations may cave in and must be supported by poling boards.
3.1.3 The sides of the excavations must be supported by walling boards and the struts if the soil has loose patches.
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.
3.1.5 Orange warning signals must be visible at all times at excavations.

3.2 Name TWO methods of backfilling trenches.

3.3 FIGURE 3.3 below is a drawing of a face brick wall. Study the drawing and answer the questions that follow.

3.3.1 Identify the type of bond used to build the wall.
3.3.2 Name the brick indicated by A.
3.3.3 Give the width of brick A in mm.

3.4 Workers are required to clean out a manhole that is overflowing with raw sewage.
State any TWO safety and hygiene measures that they must adhere to in order to prevent infections.

3.5 Choose the correct word(s) from those given in brackets. Write only the word(s) next to the question numbers (3.5.1 to 3.5.2) in the ANSWER BOOK.

3.5.1 The Occupational Health and Safety Act, 1993 (Act 85 of 1993) (protects/prohibits) workers who enter confined spaces, such as manholes.

3.5.2 Only (competent/educated) persons are allowed to work in a manhole.

3.6 USE ANSWER SHEET 3.6 and complete the sectional view of a manhole.
Use the assessment criteria on the ANSWER SHEET as a guide.

3.7 A cylindrical water supply tank is 2 800 mm high and has a diameter of 1 800 mm.
USE ANSWER SHEET 3.7 and calculate:
3.7.1 Volume of the tank in m³
3.7.2 Volume of water in the tank in litres.

Show ALL calculations and round your answers to TWOdecimal places.

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

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

3.1.1 The sides of the excavations are firm enough to support the soil.

3.1.2 The sides of the excavations may cave in and must be supported by poling boards.

3.1.3 The sides of the excavations must be supported by walling boards and the struts if the soil has loose patches.

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.

3.1.5 Orange warning signals must be visible at all times at excavations.

3.2 Name TWO methods of backfilling trenches.

3.3.1 Identify the type of bond used to build the wall.

3.3.2 Name the brick indicated by A.

3.3.3 Give the width of brick A in mm.

3.4 Workers must adhere to safety and hygiene measures.

3.5.1 The Occupational Health and Safety Act, 1993 (Act 85 of 1993) protects/prohibits workers who enter confined spaces, such as manholes.

3.5.2 Only (competent/educated) persons are allowed to work in a manhole.

3.7.1 Volume of the tank in m³

3.7.2 Volume of water in the tank in litres.

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