Plumbing Theory N1 — Memo

August 2018 — N1 — Plumbing Theory

N1 2018 Nated Engineering

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Q1— Section header —

1.1.2Foam

1.1.3

1.2inimum of 75 mm and aximum of 200 mm (2\ [5]5

Q2— Section header —

2.1Guillotine Safety measures Finger guard should be provided for the blade Machine should be tightly secured to the floor (1\

2.2prohibition signs circular shape mandatory signs circular shape warning signs triangular shape information signs square oblong (8\

Q3— Section header —

3.1It is made of copper (4\

3.2galvanising paint bitumen enamelled iron (4\ [8]8

Q4— Section header —

4.1Gas welding Gas cylinders (acetylene and oxygen\ Regulators Rubber hoses Mixer (blow pipe and nozzle\ Welding rods Flash back arrestor Arc welding Electrode holder

Q5— Section header —

5.1.1pillar tap (1\

5.1.2bath/h and ash basin (1\

5.1.3packing gland nut packing jumper or valve plate washer (4\

5.2Safe to drink Attractive in appearance (sparkling\ Free of taste Free of odour (3\

5.3vibrating sound in pipework. (2\

5.4.1Portion of pipe from service mains to behind the meter

5.4.2Portion of pipe between meter and premises

5.4.314

Q6— Section header —

6.1Advantages It takes up little space It reduces labour and material costs The valve is easily accessible for repairs Disadvantages It is very expensive when faulty It malfunctions when grains of sand filters through the system.

6.2To lay pipe underground, deep enough or below frozen ground surface. To put a layer of lagging around the pipe. (2\

6.3By the sun (1\

6.4This geyser has a built in cold water storage tank which is automatically controlled by a ball valve with supply coming directly from the mains and the supply pipe delivers cold water into the cylinder for heating by the element

6.5dvantage A decrease in electricity consumption is more environmentally friend Solar (sun\ energy is used to heat the water isadvantages: Not very affective in periods of no direct sunlight (cloudy periods\

Q7— Section header —

7.1Close coupled suite The low level suite (3\

7.2The water closet (toilet\ pan has a built in water seal trap and will therefore not need to be fitted with a water seal trap. (2\

7.3It is the principle of connecting the individual water seal traps, from a sanitary fixture, to a ventilated drain other ventilated pipe which leads into the open air. (3\

7.4.1Anti siphon pipe

7.4.2Bidet

7.4.3French drain

7.4.4

7.5One pipe system where all the soil water fixtures and waste water fixtures discharge into a single stack connected directly to drain. Two pipe system all waste fixtures discharge separately into an open waste

7.6Be self cleaning Have an adequate water seal Be of uniform bore Not corrode Be of same diameter as waste pipe (4\ [20]20

Q8— Section header —

Q9— Section header —

9.2

Mark Allocation

Sections5 + 11 + 8 + 11 + 14 + 12 + 20 + 12 + 7 = 100 marks

Paper information

TitleMemo

SubjectPlumbing Theory

LevelN1

Document typeNated Engineering

Year2018

MonthAugust

Pages7

Downloads3

Examination context

Decade2010s

Years ago8y

SeasonWinter (SH)

Start dayWednesday

Exam periodAugust 2018

Days since exam2,995

About Plumbing Theory 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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