CIVIL TECHNOLOGY: WOODWORKING
GRADE 12
NATIONAL SENIOR CERTIFICATE
NOVEMBER 2020

REQUIREMENTS:

1. Drawing instruments
2. A non-programmable calculator
3. ANSWER BOOK

INSTRUCTIONS AND INFORMATION

1. This question paper consists of SIX questions.
2. Answer ALL the questions.
3. Read all questions carefully.
4. Answer each question as a whole. Do NOT separate subsections of questions.
5. Number the answers correctly according to the numbering system used in this question paper.
6. Start the answer to EACH question on a NEW page.
7. Do NOT write in the margins of the ANSWER BOOK.
8. You may use sketches to illustrate your answers.
9. Write ALL calculations and answers in the ANSWER BOOK or on the attached ANSWER SHEETS.
10. Use the mark allocation as a guide to the length of your answers.
11. Make drawings and sketches in pencil, fully dimensioned and neatly finished off with descriptive titles and notes to conform to the SANS/SABS Code of Practice for Building Drawings.
12. For the purpose of this question paper, the size of a brick should be taken as 220 mm x 110 nnm x 75 mm.
13. Use your own discretion where dimensions and/or details have been omitted.
14. Answer QUESTIONS 2, 3.6, 3.7, 4.1, 5.7 and 6.5 on the attached ANSWER SHEETS using drawing instruments, where necessary.
15. Write your CENTRE NUMBER and EXAMINATION NUMBER on every ANSWER SHEET and hand them in with your ANSWER BOOK, whether you have used them or not.
16. Drawings in the question paper are NOT to scale due to electronic transfer
17. Google Images was used as the source of all photographs and pictures.
18. Write neatly and legibly.

QUESTION 1: OHSA, SAFETY, MATERIALS, TOOLS, EQUIPMENT AND JOINING (GENERIC)
Start this question on a NEW page.
1.1 Choose a description from COLUMN B that matches an item in COLUMN A.
Write only the letter (A—K) next to the question numbers (1.1.1 to 1.1.8) in the ANSWER BOOK, e.g. 1.1.9 L.

(8 x 1) (8)
1.2 Explain ONE advantage of galvanising. (1)
1.3 Name the document on hazardous chemical substances which the OHS Act requires employers to provide to interested or affected persons. (1)
1.4 Describe TWO methods that can be used to move building material around the site. (2)
1.5 State TWO specific advantages of water-based paint. (2)
1.6 You were tasked to locate steel bars and copper pipes placed into a wall.
1.6.1 Name the tool you would use to detect these materials. (1)
1.6.2 Describe how you would take care of this tool after using it. (2)
1.7 FIGURE 1.7 below shows a joining fixture that is commonly used.

Explain how this joining fixture can be used to secure a bracket to a wall. (3)
[20]

QUESTION 2: GRAPHICS AS MEANS OF COMMUNICATION (GENERIC)
Start this question on a NEW page.
FIGURE 2 on the next page shows different drawings that appear on a building plan. Analyse the drawings and complete the table on ANSWER SHEET 2.

QUESTION 3: CASEMENTS, CUPBOARDS, WALL-PANELLING AND QUANTITIES (SPECIFIC)
3.1 Give ONE word/term for each of the following descriptions by choosing a word/term from the list below. Write only the word/term next to the question numbers (3.1.1 to 3.1.5) in the ANSWER BOOK, e.g. 3.1.6 skirting.
cornice; quadrant; window sill; mullion; glazing bar; front rail;
mortice and tenon; tongue and groove; putty; panel pins;
glue; PVC; capping; paint; top rail; varnish
3.1.1 The moulding between the skirting and the floor (1)
3.1.2 The member that separates the main parts of a double casement vertically (1)
3.1.3 Used to keep the window pane in place (1)
3.1.4 The joint used to join the strip boards used in wall panels (1)
3.1.5 Horizontal member of the casement that is found directly below the transom (1)
3.2 Use your ANSWER BOOK and draw in good proportion a neat vertical section through the transom of a casement frame with a fanlight. (4)
3.3 Use ANSWER SHEET 3.3 and draw to scale 1 : 10 the front view of a freestanding kitchen cupboard with two doors. The left-hand bottom of the cupboard must start at A on the ANSWER SHEET.
Use the following specifications:

• Height: 950 mm
• Width: 900 mm
• 16 mm melamine board is used for the construction of the cupboard
• Doors: 450 mm wide

Use the assessment criteria on the ANSWER SHEET as a guide. (9)
3.4 FIGURE 3.4 on ANSWER SHEET 3.4 shows a horizontal section through a
part of a wall. Use ANSWER SHEET 3.4 and draw in good proportion a neat horizontal sectional view of the bottom part of a wall panel showing how the strip boards are joined.
Use the assessment criteria on the ANSWER SHEET as a guide. (4)
3.5 FIGURE 3.5 below shows the floor plan of a garage with a hipped roof. The width of the walls is 220 mm. Study the figure and answer the questions that follow. Show ALL calculations.

Use ANSWER SHEET 3.5 and calculate the following:
3.5.1 The length of fascia board needed for the roof(4)
3.5.2 The length of skirting needed for the garage (4)
[30]

QUESTION 4: ROOFS, CEILINGS, TOOLS AND EQUIPMENT, AND MATERIALS (SPECIFIC)
Start this question on a NEW page.
4.1 FIGURE 4.1 below shows an electrical hand tool. Study the picture and answer the questions that follow.

4.1.1 Identify the tool. (1)
4.1.2 Describe what can happen if no personal safety equipment is worn while operating this hand tool. (2)
4.1.3 Why should this hand tool be stored in a safe, dry place? (1)
4.2 FIGURE 4.2 below shows a thickness planer. Study the picture and answer the questions that follow.

4.2.1 Explain what would happen if you adjusted the height of the table while the machine is in operation. (2)
4.2.2 Explain what care must be taken to maximise the use of the blades of the machine. (2)
4.3 Name the different types of roof underlays for EACH of the following roofs:
4.3.1 Tiled roofs (1)
4.3.2 Thatch roofs (1)
4.3.3 IBR roof sheeting (1)
4.4 Draw in your ANSWER BOOK a top view of a roof to show the valley between two inclined roofs. (3)
4.5 Give ONE reason why you would close an open eave. (1)
4.6 Explain why you would rather use fibre-cement ceiling board on closed eaves than gypsum ceiling board. (1)
4.7 Describe TWO disadvantages of EACH of the following roof coverings:
4.7.1 Concrete roof tiles (2)
4.7.2 Thatch roofs (2)
4.7.3 Corrugated iron sheeting (2)
4.8 Name TWO parts of the roof construction onto which the framework of a trapdoor will be secured. (2)
4.9 Explain why you would rather use mechanically graded timber than visually graded timber for roof construction. (2)
4.10 Give TWO reasons why timber must be preserved. (2)
4.11 Use ANSWER SHEET 4.11 and draw to scale 1 : 50 a king post roof truss.
Start the drawing on the lines indicated on the ANSWER SHEET.
Use the assessment criteria on the ANSWER SHEET as a guide. (12)
[40]

QUESTION 5: CENTRING, FORMWORK, SHORING AND GRAPHICS AS MEANS OF COMMUNICATION (SPECIFIC)
Start this question on a NEW page.
5.1 FIGURE 5.1 below shows the construction detail at the foot of a centre.
Identify parts A to E. (5)

5.2 Justify the use of an adjustable steel prop rather than a wooden prop when installing formwork. (1)
5.3 FIGURE 5.3 below shows part of the detail of a dead shore. Study the drawing and answer the questions that follow.

5.3.1 Name ONE type of shoring other than dead shoring. (1)
5.3.2 Explain the use of A. (1)
5.3.3 Describe the purpose of B. (1)
5.4 FIGURE 5.4 below shows a dead shore that was constructed incorrectly.
Redraw the table below into your ANSWER BOOK and identify TWO possible mistakes in the construction of the dead shore AND recommend possible solutions to rectify the mistakes.

(4)
5.5 Differentiate, by means of TVVO line diagrams, between a couple roof truss and a collar-tie roof truss in your ANSWER BOOK. Show the walls as part of your answer. (8)
5.6 FIGURE 5.6 on ANSWER SHEET 5.6 show two walls that must support an in-situ cast concrete floor. Use ANSWER SHEET 5.6 and draw in good proportion a vertical section through the formwork for an in-situ cast concrete floor. Show the support for the formwork on one side of a supporting wall.
Use the assessment criteria on the ANSWER SHEET as a guide. (9)
[30]

QUESTION 6: SUSPENDED FLOORS, STAIRCASES, IRONMONGERY, DOORS AND JOINING (SPECIFIC)
Start this question on a NEW page
6.1 Various options are given as possible answers to the following questions.
Choose the answer and write only the letter (A—D) next to the question numbers (6.1.1 to 6.1.5) in the ANSWER BOOK, e.g. 6.1.6 E.
6.1.1 The walls of a substructure can be ..

1. any width.
2. 330 mm or 220 mm wide.
3. 220 mm or 110 mm wide.
4. None of the above-mentioned (1)

6.1.2 The minimum measurement of a tread for stairs is ...

1. 250 mm.
2. 750 mm.
3. 150 mm.
4. 350 mm. (1)

6.1.3 The ... is the member that is fixed onto a door frame and into which the latch and bolt of a lock fit.

1. diagonal plate
2. stop plate
3. keeper
4. back plate/striker plate (1)

6.1.4 The vertical member between two panels of a door is called a ...

1. lock rail.
2. transom.
3. muntin.
4. middle rail. (1)

6.1.5 A door can be attached to a door frame by using various types of ...

1. screws.
2. nails.
3. clamps.
4. hinges. (1)

6.2 FIGURE 6.2 below shows part of the floor plan of a suspended timber floor. Study the drawing and name parts A to D

6.3 Justify why the concrete base under part C in FIGURE 6.2 should be wider than part C.
6.4 Draw in your ANSWER BOOK, in good proportion, the top view of part of the layout of the upper level of the suspended floor to show how the struts are staggered.
6.5 Explain why ant guards used for suspended timber floors must be made from galvanised steel.
6.6 Distinguish between cut cupboard locks and drawer/till locks regarding the direction of the bolts of the locks when locking.
6.7 Draw in your ANSWER BOOK, in good proportion, a vertical section through a lock rail and part of the raised panels of a three-panel door.
6.8 FIGURE 6.8 below shows the assembled view of a haunched mortice and tenon joint. Study the drawing and name parts A to D. (4)

6.9 FIGURE 6.9 on ANSWER SHEET 6.9 shows the bottom half of the internal elevation of a framed ledged and braced batten door
Use ANSWER SHEET 6.9 and draw the following:
6.9.1 The brace (1)
6.9.2 The sectional view of section A-A. Draw the sectional view two times bigger than the given view. (5)
Use the assessment criteria on the ANSWER SHEET as a guide.
6.10 Draw in your ANSWER BOOK a line diagram of the top view of a straight flight of stairs with a landing between the steps.
Show the following on your drawing:

• 110 mm wall
• Three treads on both sides of the landing
• Landing
• Handrail
• Two newel posts
• Arrows indicating the rise of the stairs (8)

[40]
TOTAL: 200

ANSWER SHEET 2

ANSWER SHEET 3.3

(9)

ANSWER SHEET 3.4

ANSWER SHEET 3.5

(8)

ANSWER SHEET 4.11

(12)

ANSWER SHEET 5.6

(9)

ANSWER SHEET 6.9

6.9.1

6.9.2