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Q1— Section header —
1.1Var ious options are given as possible answers to the following questions Choose the answer and write only the letter (A C\ next to the question number (1.1 .1 1.
1.5\n the ANSWER BOOK.
1.1.1The density of an material is the mass of a given material con mass density
1.1.2how cheap a material is how long a material will stretch how long a material will last
1.1.3When a building is demo lished, a lot of building materials can be recycled. Which of the following building materials cannot be recycled? Window frames Corrugated iron sheets
1.1.4t can bend light can move through it light cannot move through it
1.1.5how easily a material will catch fire how far a material can be deformed how easily gases or liquids can penetrate the mat erial
1.2Name TWO points to consider when selecting materials for a particular application. (2\
1.3Give ONE advantage of recycling materials. (1\
1.4Name TWO advantages of using materials that meet SABS/SANS standards. (2\ [10] (12010062\ NC192010
Q2— Section header —
2.1Define the following terms:
2.1.1Mantle
2.1.2Inner core (2 2\ (4\
2.2Name TWO different types of rocks. (2\
2.3Indicate whether the following statements are TRUE or FALSE. Choose the correct answer and write only 'true' or 'false' next to the question number (2.3.1
2.3.2\ the ANSWER BOOK.
2.3.1Coal is formed from a very large amount of dead land based plant life, mainly trees that died between 360 Mya and 65 Mya.
2.3.2Igneous r ocks are formed when magma cools down and solidifies, either on the earth's surface or inside the earth. (2 1\ (2\
2.4Briefly explain the geological process of soil formation. (2\ [10]10
Q3— Section header —
3.1State THREE hand operated compactors. (3\
3.2Give TWO advantages of compacting soil in thin layers. (2\
3.3List FOUR principle reasons of compacting soil. (4\
3.4What type of compaction equipment is best suited to compact clay soil? (1\ [10]10
Q4— Section header —
4.1State TWO reaso ns for brick bonding. (2\
4.2What is meant by vanadium staining (2\
4.3List THREE different types of face bricks. (3\
4.4Give an appropriate remedy to combat the following problems in brickwork:
4.4.1Efflorescence
4.4.2Morta r smear (2 2\ (4\ (12010062\
4.5Concrete blocks are laid differently from clay bricks. State TWO processes of laying the concrete blocks. (2\
4.6Give TWO reasons hy it is important that masonry units be subjected to quality control be fore they are p ut on the market (2\ [15]15
Q5— Section header —
5.1What is meant by the following terms:
5.1.1Cement
5.1.2Plasticis ers
5.1.3Slag (3 2\ (6\
5.2Briefly discuss the principles of good housekeeping when storing and using admixtures. (5\
5.3List THREE dangers of working with cement and concrete. (3\
5.4State THREE advantages of using ready mix concrete. (3\
5.5Give TWO materials that are unsuitable for making concrete. (2\
5.6Explain how plastic shrinkage cracks in concrete can be prevented. (4\
5.7Briefly explain how to reduce plastic settlement cracks in concrete. (2\ [25]25
Q6— Section header —
6.1Give ONE function of mortar. (1\
6.2What is the difference between mortar mixes containing masonry cement and mortar mixes made with common cement? (4\
6.3Name THREE factors you would consider to assess the suitability of sand for making mortar. (3\
6.4What does it mean to re temper mortar (2\ [10] (12010062\10
Q7— Section header —
7.1Give TWO reasons why plaster should be mixed and used in small batches. (2\
7.2What preparation work should be done on a substrate before plaster can be applied? (3\
7.3How can plastic shrinkage cracks in plaster be prevented? (3\
7.4What will happen if y ou apply the plaster incorrectly and do not scratch the plaster before you apply the next coat of plaster? (2\ [10]10
Q8— Section header —
8.1Give TWO functions of screeds and toppings. (2\
8.2Name THREE materials for making toppings. (3\
8.3Expl ain the importance of clean , oil and dust free substrate when placing a bonded screed or topping. (2\
8.4State the maximum nominal stone size that may be used if the topping thickness is:
8.4.125 mm
8.4.230 mm
8.4.3In excess of 40 mm (3 1\ (3\ [10] TOTAL: 10010