Building Science N1 — Memo

April 2018 — N1 — Building Science

N1 2018 Nated Engineering

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31.4MARKING GUI DELINE -2- T230 (E\ (M29 BUILDING SCIENCE N1

Q1— Section header —

1.55

Q2— Section header —

2.510

3.1The relative density (r.d.\ of a substance is the density of the substance compared with the density of water or the mass of any volume of the substance compared with the mass of an equal volume of water.

3.2Empty container = 10, Empty container and araffin = 43,5 g Volume of araffin = 31,4 cm Mass of p araffin = empty container and paraffin empty container

3.3R.D Densityoftimber Densityofwater

0.75

Q4— Section header —

4.1ust have correct proportio ns of fine to coarse aggregates Must have the correct cement aggregate ratio Must have the correct water cement ratio Must be well mixed Must be fully compacted

4.2Water cement ratio = massofwater massofcement (4\ [10]10

5.1K = 273 + = 273 + 35 (2\

5.2The diaphragm pump has a thick rubber or leather diaphragm bolted into the frame of the cylinder. This diaphragm is used to divide the cylinder into two sections A large metal wa sher is bolted on either side of the rubber

5.315

Q6— Section header —

6.1350 N 220 N (4\

6.1.2Equilibrant = 130 N towards the right

6.2Horizontal c omponent HC = Cos = 50 Cos = 50 Sin (6\

6.318

Q7— Section header —

7.1Bow' s notation is the numbering of the spaces between the lines of action in a system of forces. (3\

7.2[12]12

Q8— Section header —

8.1If more than three forces acting on a point are in equilibrium, they can be represented in magnitude and direction by the sides of a closed polygon, taken in order. (4\ SPACE DIAGRAM No s cale )T

8.2(11\ 5] TOTAL POLYGON DIAGRAM Scale 1 cm = 10 N

4.9

Mark Allocation

Sections5 + 10 + 15 + 10 + 15 + 18 + 12 = 85 marks

Paper information

TitleMemo

SubjectBuilding Science

LevelN1

Document typeNated Engineering

Year2018

MonthApril

Pages7

Downloads4

Examination context

Decade2010s

Years ago8y

SeasonAutumn (SH)

Start daySunday

Exam periodApril 2018

Days since exam3,116

About Building Science examination preparation

This TVET examination resource can be used as part of a structured revision programme. Past papers are most useful when learners attempt questions independently, work within a realistic time limit, and review their answers afterwards.

How to use this resource for revision

A TVET past examination paper is most useful when it is treated as an active revision exercise. Try the questions yourself before checking the corresponding memorandum. Where you make an error, identify the reason — was it a knowledge gap, a calculation mistake, an interpretation issue, or an examination technique problem?

For stronger examination practice, complete the paper without unnecessary interruptions and keep track of the questions that take the most time. Afterwards, review the memorandum and separate knowledge gaps from mistakes caused by interpretation, calculation, structure, or examination technique.

understanding question requirements

applying subject knowledge

working under time constraints

checking answers

identifying revision priorities

A practical revision approach

Start by completing the resource without looking at the memorandum. Review incorrect and incomplete answers afterwards and make a short revision list based on the areas that caused difficulty.

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