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CIVIL TECHNOLOGY: WOOD WORKING GRADE 12 MEMORANDUM - NSC PAST PAPERS AND MEMOS MAY/JUNE 2019
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GRADE 12
NATIONAL SENIOR CERTIFICATE EXAMINATION
MEMORANDUM
MAY/JUNE 2019
QUESTION 1: OHSA, SAFETY, MATERIALS, TOOLS, EQUIPMENT AND JOINING (GENERIC)
1.1
1.1.1 G ✓ (1)
1.1.2 E ✓ (1)
1.1.3 A ✓ (1)
1.1.4 C ✓ (1)
1.1.5 D ✓ (1)
1.2
- When heavy materials/loads are not lifted/lowered/handled correctly. ✓
- Wrong posture when lifting materials.
- Not using safety apparel.
ANY ONE OF THE ABOVE (1)
1.3 1 : 4 OR 76° (2)
1.4
- A qualified person must operate the device. ✓
- The device must never be overloaded. ✓
- The gates and wire components of the lift of the hoisting device must be at least 1 980 mm high.
- The gates must be shut when the device is being used.
- Emergency brake mechanisms must be installed.
- Safety measures must be displayed inside the cage.
- Inspections and maintenance work should be carried out regularly
(at least six-monthly) by qualified persons. - Overhead protection must be provided to protect workers from falling objects.
- When material or equipment is being hoisted, it must be stacked firmly and correctly, and secured properly.
- The hoist must be inspected weekly by a qualified person.
ANY TWO OF THE ABOVE (2)
1.5.1
- = Laser level ✓
- = Dumpy level ✓ (2)
1.5.2
| Laser level (A) | Dumpy level (B) |
To determine levels when:
| The dumpy level is used when:
|
ANY ONE IN EACH COLUMN ABOVE (2)
1.6
1.6.1 Rawl bolt ✓ (1)
1.6.2
- – Drill a hole of the required diameter and depth. ✓
- – Remove debris and thoroughly clean the hole with a brush or by blowing into it. ✓
- – Remove the bolt and washer, insert the sleeve/shield into the hole and align the fixture (for example base plate, etc…) with the hole. ✓
- – Insert the bolt with washer through the fixture and tighten to the recommended torque. ✓ (4)
1.6.3 Rawl bolts:
- are stronger fasteners than a screw with a plastic plug. ✓
- are designed to resist pull-out failure.
- have excellent mechanical properties such as tensile and yield stress.
- have excellent carrying capacity.
- have excellent tolerance to variance in the hole size.
ANY ONE OF THE ABOVE (1)
[20]
QUESTION 2: GRAPHICS AS MEANS OF COMMUNICATION (GENERIC)
ANSWER SHEET 2
| NO | QUESTIONS | ANSWERS | MARKS |
| 1 | Identify the elevation shown in FIGURE A | Eastern/East elevation/East✓ | 1 |
| 2 | Name the scale of FIGURE B. | 1 : 100 ✓ | 1 |
| 3 | Identify number 1. | Barge board ✓ | 1 |
| 4 | Identify number 2. | Roof overhang/Eave/Open eave ✓ | 1 |
| 5 | Recommend a suitable finish for number 3. | Plaster/Paint/Face brick/Tiles/Cladding ✓ | 1 |
| 6 | What is indicated by number 4? | Door/Entrance door/Door opening ✓ | 1 |
| 7 | Identify the drawing symbol indicated by number 5 | Finished floor level/FFL✓ | 1 |
| 8 | Identify the drawing symbol indicated by number 6 | Natural ground level/NGL ✓ | 1 |
| 9 | What is indicated by number 7? | Step ✓ | 1 |
| 10 | Give the date on which the building plan was printed | 2019/06/16 ✓ | 1 |
| 11 | Who checked the building plan? | P Blade ✓ | 1 |
| 12 | Name the electrical drawing symbol in the column for the notes in FIGURE 2 that must be placed at a staircase. | Two-way switch ✓ | 1 |
| 13 | Name the electrical feature in the column for the notes in FIGURE 2 that must be placed at the entrance door of the house. | Wall light ✓ | 1 |
| 14 | Identify the type of roof that is used on the building in FIGURE A. | Gable roof ✓ | 1 |
| 15 | Explain the purpose of number 1. | To cover ends of purlins/battens/fixed to the purlins/battens for a neat appearance. To finish of the gable end of the roof. ✓ | 1 |
| 16 | Who is the owner of this house? | Mr H Smith ✓ | 1 |
| 17 | In which street is the proposed dwelling situated? | Jupiter street ✓ | 1 |
| 18 | Identify number 8. | Rainwater down pipe/Downpipe ✓ | 1 |
| 19 | What is the sanitary fitting indicated by number 9 used for? | To wash your face/Body ✓ Brush your teeth Wash your hands Washing/Rinsing | 1 |
| 20 | Recommend an alternative sanitary fitting to replace number 10 that will serve a similar purpose. | Bath ✓ | 1 |
| 21 | Explain the purpose of number 11 as indicated on the staircase. | Landing to serve as resting place or change of direction of staircase. ✓ | 1 |
| 22 | What is indicated by number 13? | Emergency light/External light Thickness of wall/110 mm ✓ | 1 |
| 23 | What is indicated by number 15? | North- symbol/direction/point ✓ | 1 |
| 24 | Deduce the height of window 1 from the window schedule. | 1,8 m or 1 800 mm ✓ | 1 |
| 25 | Deduce the width of window 2 from the window schedule. | 2,4 m or 2 400 mm✓ | 1 |
| 26 | Name the elevations of the building on which the staircase is situated. | Western/West elevation/West ✓ Southern/South elevation/South ✓ | 2 |
| 27 | Differentiate between the electrical symbols indicated by numbers 12 and 14. | 12 – One way light switch single pole/ lever ✓ 14 – One way light switch double pole/ lever ✓ | 2 |
| 28 | Recommend a suitable floor covering for the lounge. | Tiles/Novilon/Carpets/Laminated flooring/Wooden flooring.✓ | 1 |
| 29 | Calculate the area of the lounge in m². Show ALL calculations. | 6 m ✓ x 3 m ✓ = 18 m² ✓ OR 6 000 mm x 3 000 mm = 18 m² | 3 |
| 30 | Calculate the perimeter of the building. Show ALL calculations. | (220 + 3 000 + 110 + 3 000 + 220) ✓ x 2 ✓ = 6 550 x 2 =13 100 mm ✓ (220 + 6 000 + 220) ✓ x 2 ✓ = 6 440 x 2 = 12 880 mm ✓ 13 100 + 12 880 = 25 980 mm ✓ OR = 25,98 m | 7 |
| TOTAL: | 40 |
DO NOT MARK QUESTIONS 12 AND 13
QUESTION 3: CASEMENTS, CUPBOARDS, WALL-PANELLING AND QUANTITIES (SPECIFIC)
3.1 Glazing bar ✓ (1)
3.2
- – Frame head ✓
- – Transom ✓
- – Mullion ✓
- – Casement stile ✓
- – Bottom rail of casement/Bottom rail ✓ (5)
3.3 
USE A MASK TO MARK THE DRAWING
| ASSESSMENT CRITERIA | MARK | CM |
| Front rail | 1 | |
| Top shelf | 1 | |
| Middle shelf | 1 | |
| Bottom shelf | 1 | |
| Hanging rail | 1 | |
| Kick plate | 1 | |
| Back of base | 1 | |
| Back of cupboard | 1 | |
| Application of scale: Correct height Correct depth Correct thickness of material | 1 1 1 1 | |
| TOTAL: | 11 |
3.4 
Application of scale ✓
| ASSESSMENT CRITERIA | MARKS | CANDIDATE'S MARK |
| Horizontal rough grounds | 2 | |
| Tongue and groove board | 1 | |
| Skirting | 1 | |
| Quadrant mould | 1 | |
| Application of scale More than 3 wrong no marks | 1 | |
| TOTAL: | 6 |
Marks are awarded for the drawing and not for labels.
USE A MASK TO MARK THE DRAWING
3.5.1 Length of fascia board
= 9 000 mm + 300 mm + 9 000 mm + 300 mm ✓
OR
(9 000 mm + 300 mm) x 2
OR
(150 + 9000 +150) x 2
= 18 600 mm
= 18,6 m ✓(2)
3.5.2 Number of roof trusses needed
Internal dimension
Distance between centres
8,56 1,3 ✓
= 6,58 + 1 ✓
= 7 + 1 ✓
= 8 Roof trusses ✓ (5)
[30]
QUESTION 4: ROOFS, CEILINGS, TOOLS AND EQUIPMENT, AND MATERIALS (SPECIFIC)
4.1
4.1.1 B✓ (1)
4.1.2 F ✓(1)
4.1.3 D ✓ (1)
4.1.4 E ✓ (1)
4.1.5 C ✓ (1)
4.2 
USE A MASK TO MARK THIS QUESTION
| ASSESSMENT CRITERIA | MARK |
| Fascia board: 230 mm x 38 mm | 1 |
| Hanger: 38 mm x 38 mm | 1 |
| Bearer: 38 mm x 38 mm | 1 |
| 6 mm fibre-cement board on closed eaves | 1 |
| Quarter round mouldings below fibre-cement board | 2 |
| Application of scale More than 3 wrong no marks | 1 |
| TOTAL: | 7 |
(7)
4.3
| Hipped roof | Gable roof | |
| MATERIAL | More timber is used because of the complex design of the roof ✓ More roof covering is used More cutting and waste | Less timber is used because of simple design ✓ Less roof covering is used Less cutting and waste |
| CONSTRUCTION | Slope down on all sides ✓ The construction is complex Roof is stronger Roof takes longer to construct | Slope down on only two sides ✓ Simple design Roof not as strong because less timber is used Constructed faster |
ANY ONE OF THE ABOVE FOR EACH CRITERION IN EACH COLUMN (4)
4.4
- Gang nails ✓
- Bolt and nuts ✓
- Nails ✓ (3)
4.5
- Aluminium frames/Timber frames✓
- Cover strip/T-metal strip ✓
- Hinges
- Barrel bolt
ANY TWO OF THE ABOVE (2)
4.6 610 mm x 610 mm ✓ (1)
4.7
4.7.1 Portable electrical planer ✓(1)
4.7.2
- Safety goggles ✓
- Dust ✓
- Respiratory mask
ANY TWO OF THE ABOVE (2)
4.7.3
- Store in a dry safe place.✓
- Keep in a wooden box or plastic box away from moisture.✓
- Store the plane on its side to prevent damage to the blade.
- Retract the blade into the machine.
ANY TWO OF THE ABOVE (2)
4.7.4 Check the timber for:
- Loose knots ✓
- Sand ✓
- Nails/Screws/Any metal objects in the timber
ANY TWO OF THE ABOVE (2)
4.8
4.8.1
- Avoid making adjustments while the blade is turning. ✓
- Keep your hands and fingers away from rotating blade. ✓
- Ensure all clamps and locking devices are locked. ✓
- Check the wood for loose knots/nails/screws.
- Ensure that the machine stands in a well-balanced position.
- Ensure the blade is properly fastened.
- Do not leave the machine until the blade has stop turning.
- Approach the timber slowly.
ANY THREE OF THE ABOVE OR ANY ACCEPTABLE ANSWER (3)
4.8.2
- Check the wood for any metal objects before cutting commence. ✓
- Make sure the teeth of the blade are sharp.✓
- Ensure that the blade is properly fastened.
- Do not force material to the blade.
ANY TWO OF THE ABOVE (2)
4.9
- Remove all dust✓
- Apply first layer of sanding sealer. ✓
- Allow drying time for first layer. ✓
- Sand lightly✓
- Remove dust from the door.✓
- Apply second layer of sanding sealer.
ANY FIVE OF THE ABOVE (5)
4.10
- raded timber has a stamp that indicates the grade as well as the saw mill at which it was graded. ✓
- Graded timber has a colour coded end grain.
ANY ONE OF THE ABOVE (1)
[40]
QUESTION 5: CENTRING, FORMWORK, SHORING AND GRAPHICS AS MEANS OF COMMUNICATION (SPECIFIC)
5.1
Proportion✓
| ASSESSMENT CRITERIA | MARK |
| Bearer | 1 |
| Rib | 1 |
| Laggings | 1 |
| Space between laggings | 1 |
| Any THREE labels | 3 |
| Proportion | 1 |
| TOTAL: | 8 |
(8)
5.2
5.2.1 Braces/struts ✓ (1)
5.2.2 Fish plate ✓ (1)
5.2.3 Clamps ✓ (1)
5.2.4 Folding wedges ✓ (1)
5.2.5 Soleplate ✓(1)
5.3
- Plastic ✓
- Metal sheeting ✓
- Hardboard/Ply wood
- Fibreglass
ANY TWO OF THE ABOVE (2)
5.4
- – Clamp/cleat ✓
- – Yoke ✓
- – Threaded bolt/Threaded rod ✓ (3)
5.5
Proportion✓
| ASSESSMENT CRITERIA | MARK |
| Dead shore | 1 |
| Steel dog | 1 |
| Folding wedge | 1 |
| Soleplate | 1 |
| Any TWO labels | 2 |
| Proportion | 1 |
| TOTAL: | 7 |
(7)
5.6
Proportion✓
| ASSESSMENT CRITERIA | MARK |
| Parapet wall | 1 |
| Wall | 1 |
| Wall plate | 1 |
| Rafter | 1 |
| Proportion | 1 |
| TOTAL: | 5 |
(5)
[30]
QUESTION 6: SUSPENDED FLOORS, STAIRCASES, IRONMONGERY, DOORS AND JOINING (SPECIFIC)
6.1
6.1.1 C ✓ (1)
6.1.2 A ✓ (1)
6.1.3 C ✓ (1)
6.1.4 A ✓ (1)
6.1.5 D✓ (1)
6.2
| ASSESSMENT CRITERIA | MARK |
| Foundation wall: 330 mm | 1 |
| Wall of superstructure | 1 |
| DPC | 1 |
| Ant guard | 1 |
| Air brick | 1 |
| Wall plate | 1 |
| Floor joist | 1 |
| Proportion | 1 |
| Any ONE label | 1 |
| TOTAL: | 9 |
(9)
6.3 Half-landing stairs are known as U-shaped ✓ stairs. A half – landing staircase has two parallel flights of stairs ✓ that are connected by a landing that make a 180° ✓ turn when one staircase ascends or descends.
OR
(3)
6.4
- Mortise locks are mortised ✓ into one of the stiles of the door and are used for entrance doors, internal doors and any large doors. ✓
- Night latch is mounted ✓ onto the internal surface of the stile of a door and is used to secure entrance doors. ✓ (4)
6.5 (7)
6.6
| ASSESSMENT CRITERIA | MARK |
| Hidden detail of grooves | 2 |
| Double tenon | 2 |
| TWO labels | 2 |
| Proportion of tenons | 1 |
| TOTAL: | 7 |
(7)
6.7 A – Joist hanger/Truss hanger/Beam hanger ✓ (1)
6.8
6.8.1 Clout nails/Dry wall screws ✓ (1)
6.8.2 Copper nails/Nails/Screws ✓ (1)
6.8.3 Roof nails ✓
Pozi drive screws
ANY ONE OF THE ABOVE (1)
6.9
- Putty ✓
- Glazing beads
ANY ONE OF THE ABOVE (1)
[40]
TOTAL: 200
Published in 2019 May/June Grade 12 NSC Exam Papers and Memos