Civil Technology P1 English

November 2008 — Grade 12 / Matric — Civil Technology

Past Paper 2008 Grade 12 English

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🎯 200 marks ⏱️ 3h 📄 13 pages 📝 73 items found 📚 1 topics

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Q1— Section header —

1.1Identify the roof truss illustrated below. FIGURE 1.1 (2\

1.2

1.3In the construction industry steel structures and steel roof trusses are commonly used. The different members of a steel roof truss are connected to one another by means of gusset plates. Name THREE methods that are

1.4Describe the purpose of a batten/purlin when used for roofing purposes. (1\

1.5You are a carpenter and joiner on site, and you are required to construct the roof trusses of a building.

1.5.1Name TWO hand tools that you would require to make the trusses, and mention ONE important safety precaution you would observe when using each tool. (4\

1.5.2Briefly explain THREE safety precautions that you would observe when using a power saw. (3\

1.6What factor determines the spacing between roof trusses? (1\

1.7

1.8You are a glazier on site. Name TWO materials that could be used on a timber casement to keep the window pane in place. (2\

1.9You are on site and are administering first aid to an injured colleague who is bleeding. List THREE precautions you will take to ensure that you are not infected with any viruses or diseases, taking into account HIV/Aids.

Q2— Section header —

2.1State TWO uses of each of the following:

2.1.1Concrete (2\

2.1.2Mortar (2\

2.2Bricks are available in various sizes and shapes. Some are solid, whilst others have holes. Compare the differences between a solid brick and one with holes. State at least TWO differences. Draw a table in the ANSWER

2.3Dry-wall construction is commonly used in the building environment. Describe in your own words the different components and materials used for a dry-wall construction. (4\

2.4

2.5As a contractor you have been contracted by the local municipality to build a pedestrian bridge over a freeway that passes through a township. The reinforcement bars to be used for the columns that have to support and hold

2.5.1Reinforcement bars need to be covered in concrete. Give THREE reasons for this. (3\

2.5.2What should the nominal (minimum\oncrete cover be when reinforcing the beam? (2\

2.6Distinguish between formwork and shoring . (4\ A B

2.7Rib and block floor slabs are becoming more popular in the building industry because of the many advantages associated with it. List FOUR material components of a rib and block floor slab. (4\

2.8As a builder you are required to build a one-ringed semi-circular gauged arch to an entrance hall.

2.8.2Make a two-dimensional freehand sketch of the arch and also show the brickwork supporting the arch in English bond. Label any SIX parts of the drawing. What will you use to support the weight of the masonry until the

Q3— Section header —

3.1All sanitary fitments should be fitted with a trap. The trap retains a small amount of water to serve as a barrier preventing bad smells from entering the house. Recommend THREE features that a good trap should have.

3.2One of the ways in which a water trap may lose its seal is due to syphonage. What precautionary measure can be taken to prevent such a situation? (1\

3.3Identify TWO types of traps and indicate where it could be used in a waste fitment. (4\

3.4Extensive use is made of a rodding eye in modern waste water and drainage systems. Briefly explain the purpose of the rodding eye and the advantage of installing one. (State ONE purpose and ONE advantage.\

3.5You have to choose between a gravity and a pressure geyser for the supply of hot water to a house. Which one will you choose? Give a reason for your answer. (2\

3.6Water is heated for consumption by households for various reasons. To have a ready supply of heated water, it is essential to install an electric water heater. Explain how a solar or electric geyser operates.

3.73.7.1 State TWO advantages of a solar geyser. (2\

3.7.2State ONE disadvantage of a solar geyser. (1\

3.8Explain why it is not advisable to discharge waste water into a septic tank (1\

3.9There have been many power supply cuts to most parts of our country recently. This has been mainly due to the excessive use of electricity in our homes. Recommend TWO possible ways in which a consumer could reduce

3.10What is the purpose of a grease trap and where will you install one? (2\

3.11Mankind is dependent on a supply of fresh water for survival. In the absence of piped water from the municipality, suggest TWO sources that supply fresh water that may be consumed by humans. (2\ [30]30

Q4— Section header —

4.1

4.1.1When concrete is poured, it needs to be compacted in order to ... smooth the surface. gain maximum density. cause segregation. hydrate properly. (1\

4.1.2When cement and water come into contact with one another, a chemical reaction takes place. This chemical reaction is called ... curing. hyperventilation. compaction. hydration. (1\

4.1.3This test is used to test the consistency of the mix of different batches of concrete: Slump test Combustion test Sample test (1\

4.1.4The cube test is conducted to test ... uneven colour in the concrete. the stiffness of the concrete. the dispersal of aggregates in the concrete. the compressive strength of the concrete. (1\

4.1.5When timber boards are used to finish the verge of a gable end roof, they are called ... fascia boards. barge boards. ceiling boards. soffit boards. (1\

4.2A number of different types of materials are available for the supply of fresh water to a house. Redraw the table below in the ANSWER BOOK and complete it by stating ONE advantage and ONE disadvantage of the given

4.3You have to cast a concrete floor. Give TWO reasons why you would prefer to use ready mixed concrete. (2\

4.4Concrete is extensively used in civil engineering because of its many excellent properties. List THREE properties of reinforced concrete. (3\

4.5It has been reported in the media that some reinforced concrete structures have collapsed (failed\List THREE possible factors that could give rise to structural failure in concrete. (3\

4.6Timber is graded before it is used in the building industry. What are the TWO methods used to grade timber? (2\

4.7A variety of timbers are used in the building industry. Redraw the table below in the ANSWER BOOK and complete it by filling in ONE property and ONE use of the given timber as used in the construction of a house.

4.8FIGURE 4.8 represents a drawing of the sub-structure of a strong room in your Civil Technology centre. FIGURE 4.8 FIGURE 4.8 Use ANSWER SHEET 4.8 and calculate the quantity of tiles you would require to tile the floor. The size of the tiles is 300 mm x 300 mm.

Q5— Section header —

5.1FIGURE 5.1 shows a simply supported beam with a uniformly distributed load (UDL\spread across the entire beam. Draw only a representation of the following:

5.1.1Shear force diagram (NO calculations needed\ (3\

5.1.2Bending moment diagram (NO calculations needed\ (1\ UDL LR RR FIGURE 5.1

5.2FIGURE 5.2 below shows the design of a roof truss that has to be placed on a newly-built structure. FIGURE 5.2

5.2.1

5.2.2Complete the table below on ANSWER SHEET 5.2.2. MEMBER MAGNITUDE NATURE AE BF CG DE DG EF FG (14\

5.3FIGURE 5.3 shows the lamina of a pyramid. FIGURE 5.3

5.3.1Calculate the area of the lamina. (2\

5.3.2Determine by means of calculations the position of the centroid from the following: (a\ttom (b\ht-hand side (2\ (2\ [30] 80 mm90 mm30

Q6— Section header —

6.1Using a scale of 1:100, design and draw the floor plan of the storeroom required on ANSWER SHEET 6.1. Dimension your drawing. (20\

6.2Draw to a scale 1:100 the south elevation of the storeroom on ANSWER SHEET 6.2. (10\

6.3Draw to a scale 1:50 a vertical section through the building as seen from the western side on ANSWER SHEET 6.3. Show ONLY the roof construction and top part of the external walls. (10\ [40] 20040

Q4— Section header —

Q5— Section header —

Q6— Section header —

Topics Identified

Construction

Mark Allocation

Total200 marks

Sections30 + 40 + 30 + 30 + 30 + 40 = 200 marks

Paper information

SubjectCivil Technology

Year2008

SessionNovember

TypePast Paper

PaperPaper 1

LanguageEnglish

Pages20

Downloads8

Examination context

Decade2000s

Years ago18y

SeasonSpring (SH)

Start dayWednesday

Exam periodNovember 2008

Days since exam6,562

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