QUESTION 1: CONSTRUCTION, SAFETY AND MATERIAL

1.1 

1.1.1

  • The person is using a table and chairs to reach the required height. √
  • The person is not using the appropriate safety equipment. (1)
    ANY ONE OF THE ABOVE OR ANY OTHER ACCEPTABLE ANSWER

1.1.2 The person can use a ladder or scaffolding to reach the required height. √ (1)

1.2
1.2.1

  • When using a grinder the sparks can burn your face. √
  • When using a grinder the sparks can damage your eyes.
  • When painting the paint can splash in your eyes.
  • When cutting or chiselling wood the wood splinters can get into your face. (1)
    ANY ONE OF THE ABOVE OR ANY OTHER ACCEPTABLE ANSWER

1.2.2

  • When working with cement you will inhale the dust and it can cause lung problems. √
  • When sawing/sanding wood you will inhale the dust. (1)
    ANY ONE OF THE ABOVE OR ANY OTHER ACCEPTABLE ANSWER

1.2.3

  • You can get an injury when heavy objects fall on your feet. √
  • You can get an injury when stepping onto nails, screws or any other sharp object.
  • You won't have the insulation protection when coming in contact with electricity. (1)
    ANY ONE OF THE ABOVE OR ANY OTHER ACCEPTABLE ANSWER

1.3

  • Ensure that workers maintain a safe distance from material that is moving overhead √
  • Seek help to move material that is too heavy to handle alone. √
  • Ensure that there are enough workmen to carry heavy loads. √
  • The material must be secured firmly.
  • When material is being moved by a hoist a qualified person must operate the hoist. (3)
    ANY THREE OF THE ABOVE OR ANY OTHER ACCEPTABLE ANSWER

1.4

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1.5
1.5.1 Channel iron √ (1)

1.5.2

  • The steel profile is grey √
  • Prone to rust
  • A good conductor of heat
  • Malleable
  • Doesn't bend easily
  • Welds well
  • Can easily be joined (1)
    ANY ONE OF THE ABOVE OR ANY OTHER ACCEPTABLE ANSWER

1.6

  • Stone is used to add bulk to the concrete. √
  • Stone makes the mix more economical. √
  • Using stone in concrete reduces the paste content and therefore makes the concrete more stable. √
  • The quantity of stone also determines the strength of the concrete.
  • Stone also reduces shrinkage and deformations. (3)
    ANY THREE OF THE ABOVE OR ANY OTHER ACCEPTABLE ANSWER

1.7

  • Beneath concrete floors. √
  • Under window sills. √
  • At roofs/under roof covering. √
  • Under the wall of the super structure. (3)
    ANY THREE OF THE ABOVE OR ANY OTHER ACCEPTABLE ANSWER

1.8 Damp proof course is used to prevent damp/moisture to enter a building. √ (1)

1.9
1.9.1 Stretcher bond (1)

1.9.2

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1.10

  • Clay/Slate tiles √
  • Galvanised corrugated iron sheets √
  • Galvanised IBR roof sheeting
  • Thatch roof
  • Cement fibre sheet (2)
    ANY TWO OF THE ABOVE OR ANY OTHER ACCEPTABLE ANSWER

1.11

  • Timber frames need regular maintenance. √
  • Timber is expensive since imported hardwood is scarce. √
  • Timber cannot be effectively burglar-proofed.
  • Timber is prone to attacks by insects and fungi.
  • Timber is not fire resistant. (2)
    ANY TWO OF THE ABOVE OR ANY OTHER ACCEPTABLE ANSWER

QUESTION 2: ADVANCED CONSTRUCTION AND EQUIPMENT

2.1
2.1.1 Portable electric planer √ (1)

2.1.2 This machine is mainly used to plane:

  • edges. √
  • ends. √
  • bevels.
  • rebates.
  • chamfers. (2)
    ANY TWO OF THE ABOVE OR ANY OTHER ACCEPTABLE ANSWER

2.1.3

  • It can remove more than 2 mm of wood at once.√
  • It planes more accurately.
  • It planes much faster than a hand plane. (1)
    ANY ONE OF THE ABOVE OR ANY OTHER ACCEPTABLE ANSWER

2.1.4 By using a generator on site this machine can still be used. √ (1)

2.2
2.2.1

  • Measuring of heights √
  • Measuring of distances √
  • Measuring of angles (2)

2.2.2

  • The telescopic level/dumpy level √
  • The tripod √
  • Telescopic staff √ (3)

2.3

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√ (1)
ANY ONE OF THE ABOVE

2.4 When you build cavity walls. √ (1)

2.5
2.5.1 Pre-stressed concrete ribs/Concrete ribs/Ribs. √ (1)

2.5.2

  • Ribbed bar √
  • Twisted rib bar
  • Square twisted bar
  • Round bar (1)
    ANY ONE OF THE ABOVE OR ANY OTHER ACCEPTABLE ANSWER

2.5.3

  • It acts as additional reinforcement. √
  • The steel mesh can be tied to the triangular reinforcing of the rib with binding wire.
  • Ensure effective binding between concrete and rib. (1)
    ANY ONE OF THE ABOVE OR ANY OTHER ACCEPTABLE ANSWER

2.5.4 At rib and block floors. √ (1)

2.5.5

  • Spraying with water
  • A patent sealer can be used
  • Concrete can be covered with wet sand
  • Concrete can be covered with hessian
  • Concrete can be covered with canvas
  • Concrete can be covered with other protective covering (1)
    ANY ONE OF THE ABOVE OR ANY OTHER ACCEPTABLE ANSWER

2.5.6

  • Flathead prop √
  • Drop head prop
  • Multi prop
  • Prop (1)
    ANY ONE OF THE ABOVE OR ANY OTHER ACCEPTABLE ANSWER

2.6

  • Shutter boards should be cleaned after use. √
  • All rests/residue of concrete should be removed. √
  • All holes should be plugged.
  • Release agents or emulsion oil should be applied to the shutter boards. (2)
    ANY TWO OF THE ABOVE OR ANY OTHER ACCEPTABLE ANSWER

2.7

  • Shuttering (formwork) should be strong enough to carry the load of the wet concrete. √
  • It should be able to bear the mass of people and equipment working on it. √
  • Formwork material should be made of a material, which can easily be repaired in situ. √
  • It should be constructed in such a manner that it can be easily removed and erected.
  • It must be assembled accurately.
  • It must be sealed off to prevent unnecessary loss of concrete, which may lead to honeycombing.
  • It must be clean from dirt such as sawdust and excessive release agent. (3)
    ANY THREE OF THE ABOVE OR ANY OTHER ACCEPTABLE ANSWER

2.8
2.8.1

  • A – Shear bar √
  • B – Stirrup/binders √
  • C – Anchor bar √
  • D – Main bar √ (4)

2.8.2
Spacers cover depth blocks/cover depth stand, are used to keep the bars away from shuttering boards (formwork). √ (1)

2.9

  • Soleplates are used to create a level surface onto which the scaffold can be erected. √
  • It is used to prevent the scaffolding from sinking into the ground.
  • It spreads the load of the scaffold, materials and workmen evenly onto the ground. (1)
    ANY ONE OF THE ABOVE OR ANY OTHER ACCEPTABLE ANSWER

2.10
2.10.1 The weep-hole must be inserted above the horizontal damp-proof course of the external part of the wall. √ (1)

2.10.2 Allow water penetrating the outside wall to drain out of the building. √ (1)

2.10.3

  • The cavity ensures that no water will penetrate the inner wall. √
  • The cavity provides insulation against heat. √
  • The cavity provides insulation against cold.
  • The cavity provides insulation against sound. (2)
    ANY TWO OF THE ABOVE OR ANY OTHER ACCEPTABLE ANSWER

2.10.4
Weak concrete mixture √ (1)

2.10.5
110 + 50 + 110 √ = 270 √ (2)

2.11 Waterproof gypsum board/fibre cement board/marine plywood √ (1)

2.12 Normal/Strip foundations are used. √ (1)

2.13 Centre √ (1)

2.14 Intrados √ (1)

[40]


QUESTION 3: CIVIL SERVICES

3.1
3.1.1 B √ (1)

3.1.2 E √ (1)

3.1.3 D √ (1)

3.1.4 C √ (1)

3.1.5 A √ (1)

3.2

  • PVC pipe √
  • Copper pipe √
  • Galvanized pipe √ (3)

3.3
3.3.1 It is to provide water to the tap. √ (1)

3.3.2 Cap B is removable to provide access to the inside of the pipe. √ (1)

3.3.3 Waste water pipe/PVC pipe/Galvanised pipe √ (1)

3.3.4 40 mm/50 mm √ (1)

3.3.5 It is used to anchor the pipe to the wall. √ (1)

3.3.6 It is used to guide the wastewater directly into the gully. √ (1)

3.3.7 100 mm interior/110 mm exterior √ (1)

3.3.8

  • The purpose is to form a water seal/water trap/water lock. √
  • To prevent bad odours and gasses from the sewer entering back into the building. (1)
    ANY ONE OF THE ABOVE OR ANY OTHER ACCEPTABLE ANSWER

3.3.9 P – trap √ (1)

3.4

3.4.1 Wash tub √ (1)

3.4.2 Sewer line/drain pipes √ (1)

3.4.3 Safety valve √ (1)

3.4.4 Storm water drain pipes √ (1)

3.5

  • It contains chemicals that are poisonous to the bacteria in the tank. √
  • The tank will fill up quickly and block the system. √ (2)

3.6

  • A – Stopcock √ (1)
  • B – Pressure control valve √ (1)
  • C – Vacuum breaker √ (1)
  • D – Drain cock/Cold water inlet √ (1)
  • E – Drip tray √ (1)
  • F – Safety valve/Hot water outlet √ (1)
  • G – Hot water cylinder/Geyser √ (1)
    [30]

QUESTION 4: QUANTITIES, MATERIALS AND JOINING

4.1
4.1.1   1 130 mm √ (1)

4.1.2   150 mm √ (1)

4.1.3   114 mm √ (1)

4.1.4   Window stile √ (1)

4.1.5   44 mm √ (1)

4.1.6   54 mm √ (1)

4.1.7   4 √ (1)

4.2

4.2.1 B √ (1)

4.2.2 A √ (1)

4.2.3 D √ (1)

4.2.4 C √ (1)

4.2.5 D √ (1)

4.3

  • Galvanising hoop iron is used to tie down or attach roof trusses to the brickwork. √
  • To fix wall plates to walls.
  • For cross bracing of roof trusses.
  • To secure timber frames to brick work.
  • To join existing brickwork to new brickwork (1)
    ANY ONE OF THE ABOVE OR ANY OTHER ACCEPTABLE ANSWER

4.4 Steel nails √ (1)

4.5

  • Rawl bolts √
  • Chemical fasteners in conjunction with threaded rods and nuts
  • Sleeve anchors can be used. (1)
    ANY ONE OF THE ABOVE OR ANY OTHER ACCEPTABLE ANSWER

4.6

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QUESTION 5: APPLIED MECHANICS

5.1

5.1.1  90 mm x 30 mm = 2 700 mm² √ (1)

5.1.2 60 mm x 60 mm = 3 600 mm² OR 3 150 mm² √ (1)

5.1.3 15 mm x 30 mm = 450 mm² √ (1)

5.1.4 2 700 mm + 3 600 mm – 450 mm = 5 850 mm² √ (1)

5.1.5 55 mm √ (1)

5.1.6 45 mm √ (1)

5.1.7 40 mm √ (1)

5.1.8 45 mm √ (1)

5.2

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civtechm521

MEMBER NATURE  MAGNITUDE
AE Strut √ 95,2 N √
DE Tie √ 47,6 N √

 

NOT ACCORDING TO SCALENOT ACCORDING TO SCALE

USE A MASK TO MARK THIS QUESTION

Tolerance of 1 N to either side 

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ANSWER SHEET 6.1

NO. QUESTIONS ANSWERS  MARKS 
 1  Identify the type of eave construction used in the drawing.  Open/exposed eave  1
 2  State the minimum pitch (slope) of number 1.  10°  1
 3  State the standard dimension of number 2.  114 mm x 38 mm  1
 4  Draw the drawing symbol for number 3.  civtechm614  1
 5  Name the colour coding for number 3.  Red  1
 6  Explain the purpose of number 4.  It is used to spread the load of the roof evenly onto the supporting walls of the building.  1
 7  State the standard dimension of number 5.  50 mm x 76 mm  1
8 State the centre-to-centre spacing for number 5. 900 mm to 1 200 mm 1
9 As a draughtsman, recommend a suitable roof truss for a building with a span of 4 metres. King post roof truss, SA (Howe) roof truss, W-roof truss, Couple roof 1
10 State the width of the wall indicated by number 6. 110 mm 1
11 Draw the top view of the layout of a gable roof for the proposed building indicated in the answer column.  civtechm6111 5
    Total 16



QUESTION 6: GRAPHICS AND COMMUNICATION

ANSWER SHEET 6.2

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