Materials NCV Level 2 — Document P1
November 2022 — NCV Level 2 — Materials
NCV Level 2
2022
NCV Engineering
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Q1— Section header —
1.10\in the ANSWER BOOK.
1.1The density of a material is the mass of the given material contained within a ass. ensity.
1.270 made for damp conditions. designed for specific structural purposes. irregular in shape due to their method of manufacturing.
1.3The d urability of material refers to how cheap
1.4The correct stone size for a topping that is 0,5 mm. 0,95 mm. 90,5 mm.
1.5When a building is demolished, a lot of building materials can be recycled. Which ONE of the following building materials cannot be recycled? Window frames
1.6olcanic eruptions. etamorphism. and.
1.7t can bend. ight can move through it. ight cannot move through it.
1.8The ... ensures the safety of people at work. South African Bureau of Standards Occupational Health and Safety Act South African National Standards
1.9The f ow easily the material will catch a fire. how far
1.10ollapsed slump hear slump rue slump
Q2— Section header —
2.10\n the ANSWER BOOK.
2.1Coal is formed from a very large amount of dead land based plant life, mainly trees that died between 360 ya and 65 ya.
2.2Stress is the ratio of a force to the area of an object over which the force is applied.
2.3Aesthetics is one of the functions of plaster and refers to the beauty of a structure.
2.4Igneous rocks are formed when magma cools down and solidifies, either on the earth s surface or inside the earth.
2.5Adobe refers to a specific type of building material that is usually made up o mixture of clay, sand, water and at times, straw and sticks.
2.6Common cement plaster retains water well and is less absorbent than masonry cement plaster. (12010062\ Copyright reserved Please turn over
2.7Protolithic is the original rock from which volcan ic rock formed.
2.8Plate tectonics is a theory that suggests that the earth s lithosphere is made up of about seven plates that are joined together.
2.9An on is the largest subdivision of geological time.
2.1010
Q3— Section header —
3.10\n the ANSWER BOOK. COLUMN A COLUMN B
3.10The result of a force over an area A c loud of gas and dust in space A p rocess that forces soil particle closer together
Q4— Section header —
4.1Describe how to identify efflorescence on the surface of a brick. (2\
4.2List FOUR errors that may cause brick deterioration. (4\
4.3Discuss the importance of brick bonding. (3\
4.4Moisture induced expansion occurs when bricks absorb moisture over a long period. How would you combat moisture induced expansion?
4.5Explain the effect of vanadium staining on brickwork. (2\ [15]15
Q5— Section header —
5.1Briefly discuss the principle of good housekeeping when storing and using admixtures. (5\
5.2Name THREE dangers of working with cement and concrete. (3\
5.3Name TWO materials that are unsuitable for making concrete. (2\
5.4Explain how plastic shrinkage cracks in concrete can be prevented. (4\
5.5Define the term curing of concrete (2\
5.6State THREE advantages of using ready mix ed concrete (3\
5.7Name THREE equipment that are required to carry out a slump test ccording to SANS 5862 1:2006. (3\
5.8What type of water is best suited for concrete mixtures? (3\ [25]25
Q6— Section header —
6.1Sand is not a homogeneous material, so in order to obtain the specified sand sample, you must perform a distribution test. Name THREE types of sieving tools. (3\
6.2Explain the relationship between mortar cube strength and brick strength (4\
6.3Name THREE factors you would consider to assess the suitability of sand (3\ [10] 1201006210
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 you apply plaster incorrectly and do not scratch it before you apply the next coat of plaster? (2\ [10]10
Q8— Section header —
8.1Describe FOUR methods for curing screeds. (4\
8.2What is an important fact to consider when choosing screed or topping? (2\
8.3Specify the least amount of time that can be given to screed to dry before tiling it with floor tiles. (2\
8.4Name the tool that is used to remove an old layer of a hardened concrete floor. (1\
8.5Give the size of the stones needed to cast a topping of around 30 mm thick. (1\ [10] TOTAL: 10010
Topics Identified
1
Business Plan
Mark Allocation
Total100 marks
Sections10 + 10 + 10 + 15 + 25 + 10 + 10 + 10 = 100 marks
Paper information
TitleDocument
SubjectMaterials
LevelNCV Level 2
Document typeQuestion paper
Year2022
MonthNovember
Pages7
Downloads3
Examination context
Decade2020s
Years ago4y
SeasonSpring (SH)
Start dayTuesday
Exam periodNovember 2022
Days since exam1,438
About Materials examination preparation
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