Thursday, 10 June 2021 09:25

CIVIL TECHNOLOGY PAPER GRADE 12 MEMORANDUM - NSC PAST PAPERS AND MEMOS NOVEMBER 2016

CIVIL TECHNOLOGY PAPER
GRADE 12
NSC EXAM PAPERS AND MEMOS
NOVEMBER 2016

MEMORANDUM

QUESTION 1: CONSTRUCTION, SAFETY AND MATERIAL 
1.1.1 The worker should have ensured that: 

  • the grinder and grinding blade/disc were inspected for defects before  use. √ 
  • the angle grinder is used for the intended purpose only. √ 
  • correct blade is correctly fitted for the purpose. 
  • he/she is trained to use the machine correctly.
  • do not force the tool. (2) 

ANY TWO OF THE ABOVE OR ANY OTHER ACCEPTABLE ANSWER 
1.1.2

  •  Hard hat/safety helmet √ 
  • Safety goggles/goggles √ 
  • Overall 
  • Safety gloves/gloves  

ANY TWO OF THE ABOVE (2) 
1.1.3 The machine makes a loud noise √ that will damage your hearing. √ It is the rule or regulation on a building site to protect the hearing of workers. ANY OF THE ABOVE (2) 
1.1.4 

  • dust mask 
  • face shield  
  • ear protection/ear plugs/ear muffs 
  • safety shoes √ (1) 

ANY ONE OF THE ABOVE 
1.2

1.2.1

    •  Water √
    • Patent sealer
    • Wet sand
    • Hessian
    • Canvas or protective covering
    • Plastic sheeting
    • Straw
    • Waterproof paper
      ANY ONE OF THE ABOVE (1)

1.2.2 7 to 28 days √ (1)

1.3 1.3 memo Any TWO labels √√ 

ASSESSMENT  

CRITERIA

MARK 

CANDIDATE'S  MARK

Roof covering correctly  drawn

1

 

Beam filling correctly  drawn

2

 

Wall plate correctly  

drawn

1

 

Any TWO labels 

2

 

TOTAL 

 (6) 

Single line for roof covering is acceptable. 
Wall plate in good proportion acceptable. 
1.4 

  • More battens are used √ 
  • More roof trusses are used to carry weight of tiles √ 
  • Clay/concrete tile more expensive than corrugated iron sheeting 
  • More labour intensive 
  • Needs roof underlay (2) 
    ANY TWO OF THE ABOVE 

1.5

  • Tiles /cladding√ 
  • Paint (1)
    ANY ONE OF THE ABOVE 

1.6

  • Tiles last longer/easy to clean/ water resistant √ 
  • Paint does not last as long as tiles, easy to clean.  
  • Tiles/paint gives attractive/decorative appearance. 
  • Protect plaster.
    ANY ONE OF THE ABOVE (1) 

1.7

1.7.1 Channel-iron/U beam √ (1)
1.7.2 Exposed steel is prone to rust if not treated. √ (1) 
1.7.3

    • Paint the metal. √
    • Can be galvanised.
    • Powder coating/ epoxy coating. 
    • Can be covered with oil. (1)
      ANY ONE OF THE ABOVE 

1.7.4

    • Channel iron is used for bracing or as joists. √
    • Frame of steel structures/struts/roof structures (1)
      OR ANY OTHER ACCEBTABLE ANSWER 

1.8

1.8.1

    • Three quarter bat/brick
    • 165 mm x 110 mm. √ (1) 
      ANY ONE OF THE ABOVE 

1.8.2  1.8 memo (4)

ASSESSMENT CRITERIA 

MARK 

CANDIDATE'S  MARK

Stretcher course 

2

 

Header course 

1

 

Correctness of T-junction 

1

 

TOTAL 

 

1.9

  • Cement fibre ceiling boards √ 
  • Match board ceiling boards  
  • Steel ceilings 
  • Gypsum boards 
  • Knotty pine ceilings 
  • PVC/plastic/polystyrene ceilings(1) 
    ANY ONE OF THE ABOVE 

1.10

  • To allow excess water or damp to escape √
  • keeping the inner wall dry 
  • Ventilation(1) 
    ANY ONE OF THE ABOVE 

[30]

QUESTION 2: ADVANCED CONSTRUCTION AND EQUIPMENT 
2.1

2.1.1 D √ (1)
2.1.2 L √ (1)
2.1.3 J √ (1)
2.1.4 H √ (1)
2.1.5 K √ (1) 
2.1.6 A √ (1)   
2.1.7 M √ (1)
2.1.8 I √ (1)
2.1.9 G √ (1)
2.1.10 B √ (1) 

2.2

2.2.1 Chalk line √ 
 USE 

  • To draw a straight line on a surface, by snapping the line. √ 
  • Lay out walls on foundation. 
  • Some types can be used as a plumb bobs. 
  • Draw long lines on floors.(2) 
    ANY TWO OF THE ABOVE 

2.2.2 Try square √ 
 USE 

  • Marking lines perpendicular to surfaces of materials. √ 
  • Testing squareness, straightness. 
  • Calibrated blade can be used for measuring. 
  • As a straight edge to test whether small surfaces are flat and straight.  (2)
    ANY TWO OF THE ABOVE 

2.2.3 Mitre square √ 
 USE 

  • The mitre can be used to check/end marks 45°angles. √ 
  • Test squareness of corners. 
  • Test mitre angles/and mark them.
  • Marking lines perpendicular to surfaces are flat and straight. 
  • Testing squareness, straightness of surfaces. 
  • Calibrated blade can be used for measuring. 
  • As a straight edge to test whether surfaces of materials. (2)
    ANY TWO OF THE ABOVE 

2.2.4 Sliding bevel √ 
USE 

  • The blade is adjustable for setting out and testing of any  angles. √ 
  • Draw inclined or oblique lines as well as for the testing of angles. 
  • Draw angles other than 90˚ 
  • Copying angles from one surface to another. (2)
    ANY TWO OF THE ABOVE 

2.3

2.3.1

    • The tensile strength of the concrete is compromised. √
    • Weakens the structure/ structure will break easily/ collapse. √
    • Will not be able to resist heavy loads.  (2)
      ANY TWO OF THE ABOVE 

2.3.2 To strengthen the concrete where it is the weakest against tensile  strength. √ (1) 
2.3.3

Stirrups strengthen concrete against shear forces. √ 
Shear forces are the greatest next to the support, 
Stirrups resist shear stress. (1)

2.4

2.4.1 Slump test √ (1) 
2.4.2 This test is used to test the workability of concrete/ consistency of  the concrete √ (1) 
2.4.3 For every new/fresh batch of concrete that is mixed √ (1) 

2.5

  • Cavity walls are to prevent the penetration of water into the wall as they  have better water proofing qualities. √ 
  • Cavity walls help to protect the inner wall of a house against moisture. √
  • Cavity walls provide insulation against extreme temperatures and  noise. 
  • Avoid expensive external rendering. 
  • Enable the use of cheaper or alternative materials for the inner  construction.
    ANY TWO OF THE ABOVE (2) 

2.6

2.6.1

A – Compression force/pushing forces √ 
B – Tensile force/bending forces √ 
C – Lateral force √ (3)

2.7

2.7.1 Round/circular/cylindrical column formwork √ (1)
2.7.2 Hardboard/plywood/pvc/galvanised/metal sheets √ (1)
2.7.3 Bolt and nut/threaded rods with nuts/clamp √ (1)
2.7.4 Apply form oil/emulsion oil/releasing agents to formwork √ (1)

2.8

  • A rib and block floor is very quick to install √ (1) 
  • quicker than in situ concrete floor 
    ANY ONE OF THE ABOVE 

2.9 2.9 memo

ASSESSMENT  

CRITERIA

MARK 

CANDIDATE'S  

MARK

Ribs 

2

 

Block 

1

 

Reinforcing on top of  or inthe rib

   

Hollow in block 

1

 

TOTAL 

 

(5) 

[40] 

QUESTION 3: CIVIL SERVICES 

3.1 3.1 memo

Labelling not required (2)
3.2 40/50 mm √ (1)
3.3

3.3.1

A Ventilation pipe/breather pipe/gas escape pipe √ (1) 
B Inlet pipe/Inflow pipe/Influent √ (1)
C Settling chamber/Chamber 1 √ (1)
D Discharge chamber/Chamber 2 √ (1)
E Manhole cover/Manhole lid/Cover √ (1)
F Outlet pipe/Effluent √ (1) 

3.3.2 The raw sewerage will be broken down by anaerobic/bacterial  action. √ (1) 
3.3.3

    • G allows the liquids to flow from chamber C to chamber D. √
    • Will also balance the liquid levels.(1) 
      ANY ONE OF THE ABOVE 

3.3.4 The liquids in D will flow out through F to a French drain. √ (1)
3.3.5 The level of the liquids will be the same. √ (1) 
3.3.6

    • The water coming from the bath or sink contains soap  (chemicals) that is poisonous to the bacteria and will hinder the anaerobic/bacterial process. √ (1)
    • It will fill up quicker if the frech drain gets saturated.
      ANY ONE OF THE ABOVE 

3.4 Storm water systems are used to carry storm water to rivers or low-lying  dams. √ (1) 
3.5 If you direct storm water into a sewerage system: 

  • the water will flood the reticulation plant. √ 
  • raw sewerage will overflow into rivers and pollute water sources. √ 
  • it is illegal to direct rain or storm water into a sewerage system.
    ANY TWO OF THE ABOVE (2)

3.6 Pressure control valves (pressure-reducing valves) are used to ensure that: 

  • a constant pressure is maintained in the water installation√ 
  • prevent pipes from bursting 
  • the pressure rating is in accordance with the pressure rating of the  geyser. 
    ANY ONE OF THE ABOVE (1) 

3.7

  • An elbow will be used to change the direction of a pipe √ 
  • A T-coupler will be used to split the water supply into two different flow directions/ to combine two different flow directions into one(shower).√ (2) 
    ANY TWO OF THE ABOVE 

3.8 Thermostat √ (1)
3.9 Gravity geyser/Low pressure geyser √ (1) 
3.10 Black √ Absorbs the most heat √ (2)
3.11 3.11 memo

A: Wall light √ 
B: Power point/Socket outlet/Switch Socket outlet/Plug √(2) 

ASSESSMENT CRITERIA 

MARK 

CANDIDATE'S MARK

Incoming cable to meter box 

1

 

Incoming cable to DB 

1

 

Meter box 

1

 

Distribution board 

1

 

TOTAL 

4

 (4) 

ANY OTHER WAY OF INDICATING CONDUIT PIPES 

[30] 

QUESTION 4: QUANTITIES, MATERIALS AND JOINING 
4.1

4.1.1 Door stile √ (1)
4.1.2 50 mm/50 √ (1)
4.1.3 600 √ (1)
4.1.4 3 √ (1)
4.1.5 693 mm/693 √ (1)
4.1.6 1 907 mm/1 907 OR 1 904 mm/1 904 √ (1)
4.1.7 20 mm/20 √ (1) 

4.2

4.2.1 B √ (1)
4.2.2 A √ (1)
4.2.3 D √ (1)
4.2.4 D √ (1)
4.2.5 A √ (1)
4.2.6 D √ (1)
4.2.7 C √ (1)

4.3.1 

D

     

Area to be plastered:

     

Length of ONE short wall:  
= 4 000 mm - 2(220 mm)  
= 3 560 mm √

     

Length of ONE long wall 
= 8 000 mm - 2(220 mm)  
= 7 560 mm √

     

Total length of one short and one long wall 
= 3 560 mm + 7 560 mm 
= 11 120 mm √

        (3)

2/ 

11,12 

 

Area of internal walls before deductions:

 

2,7 √ 

60,05 m² √

  (2)
       

1/ 

1,2 

 

Area of window opening:

 

0,9 √ 

1,08 m² √

  (2)
       

1/ 

2,1 

 

Area of door opening:

 

0,9 √ 

1,89 m2 √

  (2)
       
     

Total wall area to be plastered

     

√ √ √  

60,05 m² – 1,08 m² - 1,89 m²

     

= 57,08 m² √ need to be plastered

 (4)

4.3.2 

     

Volume of plaster:

1/ 

√ 

57,08 m2

   
 

√ 

0,012 m 

0,68 m3

 (3) 

If candidates did not use the dimension paper/sheet 2 marks should be  deducted 

[30]

QUESTION 5: APPLIED MECHANICS 
5.1 

5.1.1 675 mm² √ (1)
5.1.2 4 800 mm² OR 4 400 mm² √ (1)
5.1.3 400 mm² √ (1)
5.1.4 5 075 mm² √ (1)
5.1.5 30 mm √ (1)
5.1.6 95 mm √ √ (2)
5.1.7 40 mm √ (1)
When the wrong unit were used the learner will be penalised with ONE mark.

Copyright reserved Please turn over 

Civil Technology 15 DBE/November 2016  NSC – Memorandum 

5.2 5.2 memo a

DIAGRAM A: SPACE DIAGRAM 
5.2 b memo

DIAGRAM B: VECTOR DIAGRAM/FORCE DIAGRAM 

NOT ACCORDING TO SCALE 

USE A MASK TO MARK THIS QUESTION 

MEMBER 

NATURE 

MAGNITUDE

BC 

Strut √ 

OR ---

65 N √ (Size to be determined as per vector  diagram) OR 0 OR no force

CD 

Tie √ 

--------------

DA 

Tie √ 

32 N √ (Size to be determined as per vector  diagram)

BD 

Strut √ 

--------------

(6) 
Tolerance of 1 N to either side 

5.3.1 5.3.1 memo
SHEAR FORCE DIAGRAM 

USE A MASK TO MARK THIS QUESTION 

ASSESSMENT CRITERIA 

MARKS 

CANDIDATE'S MARK

Drawing correct 

5

 

Indicate all values of shear  forces on drawing 

1

 

Correct application of scale 

1

 

TOTAL 

7

 

5.3.2 Calculated from the left: 

BMd: = (28 x 6) - (10 x 4) - (20 x 1) √  
 = 168 - 40 - 20 √ 
 = 108 Nm √ 

 OR 

Calculated from the right: 

BMd: = (42 x 4) - (20 x 2) - (20 x 1)  
 = 168 - 40 - 20  
 = 108 Nm (3)

[30] 

ANSWER SHEET 6.1

NO. 

QUESTIONS 

ANSWERS 

MARKS

Name the scale used for the site plan. 

1:200 √ 

1

2

State the colour that you will use to  indicate the proposed dwelling on the  site plan. 

Red √ 

1

Identify number 1? 

Rodding eye √ 

1

Identify the line at number 2? 

Building line √ 

1

Identify number 3 

Sewer pipe/drainpipe √ 

1

6

Determine the distance from the  boundary line to the proposed dwelling  on the right hand side of the building? 

5 000 mm/5 m √ 

1

Identify number 4 

Manhole √ 

1

Identify number 5 

Municipal connection √ 

1

9

Draw the roofline of a hipped roof for  the building indicated in the next  column

6.1. q9 memmo

4

10 

Calculate the perimeter of the  

proposed dwelling. 

64 000 mm/64 m √ √ 

2

11 

What elevation will be closest to Long Street? 

West elevation √ 

1

   

TOTAL 

15

QUESTION 6: GRAPHICS AND COMMUNICATION
ANSWER SHEET 6.2  
6 memo

ASSESSMENT  

CRITERIA 

MARKS 

LM

External Walls 

4

 

Internal Walls 

3

 

Windows 

3

 

Doors 

3

 

Wash basin 

1

 

Water closet 

1

 

Double bowl sink 

1

 

Dimensions 

4

 

Floor coverings 

2

 

Application of scale One or two incorrect   = 3
Three or four incorrect  = 2 
More than five  incorrect = 1 
No measurement  correct = 0 

3

 

TOTAL 

25

 

NOT TO SCALE: USE A MASK TO MARK THIS QUESTION ONE MARK SHOULD BE DEDUCTED IF JUNCTIONS AT WALLS ARE  CLOSED  
ONE MARK SHOULD BE DEDUCTED IF INTERNAL DOORS HAVE A  WALL BETWEEN THE OPENING 

[40] 
[200] 

Last modified on Friday, 11 June 2021 08:37