3.1 Choose a description from COLUMN B that matches an item in COLUMN A. Write only the letter (A–G) next to the question number (3.1.1–3.1.5) in the ANSWER BOOK, for example 3.1.1 H. COLUMN A COLUMN B 3.1.1 Kick pipe A. PVC pipes neatly fixed to the surface of walls 3.1.2 Gutter B. used to protect the main electrical supply cable 3.1.3 Grid-plate manhole cover on C. works on a credit principle of electricals streets/pavements/in kerbs D. allows water to enter the storm-water system 3.1.4 Prepaid card system E. directs storm water off the roof 3.1.5 Surface-mounted conduits F. pipes that slope towards the sewer G. chased inside walls that are sealed with plaster to hide it 3.2 Name any THREE materials that are used for the manufacture of pipes for a cold-water installation. 3.3 FIGURE 3.3 below shows the installation of a sink in a kitchen. Study the drawing and answer the questions that follow. 3.3.1 Explain the purpose of A. 3.3.2 Explain the function of cap B on the pipe bend. 3.3.3 Identify pipe C. 3.3.4 State the diameter of pipe C. 3.3.5 Explain the purpose of D. 3.3.6 Explain why you would fix a 45° PVC bend (E) at the end of pipe C. 3.3.7 State the diameter of pipe F. 3.3.8 Describe the purpose of the water at G. 3.3.9 Identify part H. 3.4 Identify the following symbols as used in civil services: 3.4.1 3.4.2 3.4.3 3.4.4 3.5 Give TWO reasons why wastewater may not be channelled into a septic tank. 3.6 FIGURE 3.6 below shows a typical high-pressure geyser installation. Write the correct name of the part next to the letter (A–G) in the ANSWER BOOK.

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3.1 Choose a description from COLUMN B that matches an item in COLUMN A - NSC Civil Technology Civil Services - Question 3 - 2016 - Paper 1

Question 3

3.1 Choose a description from COLUMN B that matches an item in COLUMN A. Write only the letter (A–G) next to the question number (3.1.1–3.1.5) in the ANSWER BOOK, fo... show full transcript

Worked Solution & Example Answer:3.1 Choose a description from COLUMN B that matches an item in COLUMN A - NSC Civil Technology Civil Services - Question 3 - 2016 - Paper 1

Step 1

3.1.1 Choose a description from COLUMN B that matches an item in COLUMN A.

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Kick pipe - B. used to protect the main electrical supply cable.

Step 2

3.1.2 Choose a description from COLUMN B that matches an item in COLUMN A.

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Gutter - E. directs storm water off the roof.

Step 3

3.1.3 Choose a description from COLUMN B that matches an item in COLUMN A.

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Grid-plate manhole cover - D. allows water to enter the storm-water system.

Step 4

3.1.4 Choose a description from COLUMN B that matches an item in COLUMN A.

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Prepaid card system - C. works on a credit principle of electricals.

Step 5

3.1.5 Choose a description from COLUMN B that matches an item in COLUMN A.

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Surface-mounted conduits - A. PVC pipes neatly fixed to the surface of walls.

Step 6

3.2 Name any THREE materials that are used for the manufacture of pipes for a cold-water installation.

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PVC pipe
Copper pipe
Galvanized pipe

Step 7

3.3.1 Explain the purpose of A.

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The purpose of A is to provide water to the tap.

Step 8

3.3.2 Explain the function of cap B on the pipe bend.

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Cap B is removable to provide access to the inside of the pipe.

Step 9

3.3.3 Identify pipe C.

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Pipe C is a waste water pipe/PVC pipe/Galvanised pipe.

Step 10

3.3.4 State the diameter of pipe C.

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The diameter of pipe C is 40 mm/50 mm.

Step 11

3.3.5 Explain the purpose of D.

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D is used to anchor the pipe to the wall.

Step 12

3.3.6 Explain why you would fix a 45° PVC bend (E) at the end of pipe C.

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E is used to guide the wastewater directly into the gully.

Step 13

3.3.7 State the diameter of pipe F.

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The diameter of pipe F is 100 mm interior/110 mm exterior.

Step 14

3.3.8 Describe the purpose of the water at G.

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The purpose of water at G is to form a water seal/water trap/water lock, preventing odors and gasses from the sewer entering back into the building.

Step 15

3.3.9 Identify part H.

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Part H is a P-trap.

Step 16

3.4.1 Identify the following symbols as used in civil services.

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Wash tub.

Step 17

3.4.2 Identify the following symbols as used in civil services.

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Sewer line/drain pipes.

Step 18

3.4.3 Identify the following symbols as used in civil services.

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Safety valve.

Step 19

3.4.4 Identify the following symbols as used in civil services.

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Storm water drain pipes.

Step 20

3.5 Give TWO reasons why wastewater may not be channelled into a septic tank.

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It contains chemicals that are poisonous to the bacteria in the tank.
The tank will fill up quickly and block the system.

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3.6 FIGURE 3.6 below shows a typical high-pressure geyser installation.

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A - Stopcock; B - Pressure control valve; C - Vacuum breaker; D - Drain cock/Cold water inlet; E - Drip tray; F - Safety valve/Hot water outlet; G - Hot water cylinder/Geyser.

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