Materials NCV Level 3 — Document
November 2018 — NCV Level 3 — Materials
NCV Level 3
2018
NCV Engineering
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Questions — A Preview of What to Expect in the Document
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Q1— Section header —
1.1Indicate whether the following statements are TRUE or FALSE. Choose the answer and write only ' rue' or ' alse' next to the question number (1.1.1
1.1.5\ the ANSWER BOOK.
1.1.1Shutter ply is used for roofing, flooring and shutters.
1.1.2Plywood is made from thick layer of wood that are bonded tog ether with adhesive.
1.1.3Marine ply is a type of plywood designed to be used in winter.
1.1.4Block board is used for doors, tables, shelves, partitions and panels.
1.1.5Chipboard is a board made of wood chips and shavings and a syntheti c resin. (5 1\ (5\
1.2Define the term equilibrium moisture content and explain timber swelling, shrinkage and cupping. (4\
1.3Explain pull out resistance of nails and screws inserted perpendicular and parallel to the grain. (2\
1.4Nam e FOUR advantages of timber constructions. (4\ [15]15
Q2— Section header —
2.1What are the THREE advantages and THREE disadvantages of each cutting and drilling method? (6\
2.2Describe metal and list TWO physical properties of different metals. (4\
2.3Explain how steel is made. (3\
2.4List FIVE main constituents of alloys commonly used in the construction industry. (5\
2.5What are the TWO methods of cutting metals? (2\ [20] 1201027320
Q3— Section header —
3.1Various options are given as po ssible answers to the following questions. Choose the answer and write only the letter (A C\ next to the question number (
3.1.3\n the ANSWER BOOK.
3.1.1The advantage of using prefabricated steel material is: Reduce construction t ime Quality assurance Decreased precision and accuracy
3.1.2Are made by passing a heated billet between pairs of rollers Cold rolled sections Hot
3.1.3Mild steel is steel with a low carbon conte nt of between: (0,16% and 0,29%\ (0,09% and 0,15%\ (0,16% and 0,30%\ (3
3.2Name THREE advantages of steel construction. (3\
3.3Briefly describe TWO methods of fireproofing structural steel. (4\
3.4Explain and demonstr ate transporting, handling and stacking of steel sections and fabricated steel. (6\
3.5Provide reasons for starting at a braced bay when erecting steel structures. (2\
3.6Explain and demonstrate techniques to increase levels of tolerance of ho lding down (HD\lts. (2\ [20] 1201027320
Q4— Section header —
4.1Explain the effect of sea salt and strong acids on the rate of corrosion on steel. (3\
4.2Provide the first FOUR process es of hot dip galvani ing fabricated steel articles and the need for chemical controls. (4\
4.3Explain and demonstrate the principles of detailing and fabricating articles that are hot dip galvanized. (5\
4.4Explain why finished surfaces of galvani ed components of steel structures often take up diff erent appearances and patina from one another. (3\ [15]15
Q5— Section header —
5.1Explain why bronze brazing is unsuitable for joining brass components. (3\
5.2Explain and demonstrate the correct surface preparation and fit tolerance for soldering or br azing. (6\
5.3Demonstrate cleaning of excess flux after soldering and brazing. (4\
5.4List and describe THREE different methods of fusion welding to join steel. (6\
5.5Explain the structural welding code. (1\ [20]20
Q6— Section header —
6.1hoose the correct word(s\ from those given in brackets. Write only the word(s\ next to the question number (6.1.1 6.
1.4\the ANSWER BOOK.
6.1.1Patterned glass is also called (roller glass/laminated safety glass\
6.1.2
6.1.3Glass that is used in construction must comply with the national building regulations (SANS 10137/SANS 10400\
6.1.4(Back putty/bed ding putty\is the glazing putty that is pressed into the rebate. (4 1\ (4\ (12010273\
6.2Explain the manufacturing of toughe ne glass. (4\
6.3Explain the greenhouse effect of glass. (1\
6.4Explain the danger of float glass used for glazing. (1\ [10] TOTAL: 10010
Mark Allocation
Total100 marks
Sections15 + 20 + 20 + 15 + 20 + 10 = 100 marks
Paper information
TitleDocument
SubjectMaterials
LevelNCV Level 3
Document typeQuestion paper
Year2018
MonthNovember
Pages6
Downloads3
Examination context
Decade2010s
Years ago8y
SeasonSpring (SH)
Start dayThursday
Exam periodNovember 2018
Days since exam2,900
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