Civil Technology Grade 12 NSC November 2021 Memo (English)

Downloaded from hlayiso.com GRAAD 12 NATIONAL SENIOR CERTIFICATE GRADE 12 CIVIL TECHNOLOGY: WOODWORKING NOVEMBER 2021 MARKING GUIDELINES MARKS: 200 These marking guidelines consist of 21 pages. Copyright reserved Please turn over

Downloaded from hlayiso.com Civil Technology: Woodworking 2 DBE/November 2021 NSC – Marking Guidelines INSTRUCTIONS FOR THE MARKERS 1. Markers should:  Familiarise themselves with the question and answer before evaluating the responses of candidates.  Always interpret the responses of the candidates within the context of the question.  Consider any relevant and acceptable answer during pre-marking, but should strictly adhere to the answers after finalisation of the marking guidelines.  There are two approaches to answering questions, these are (1) to describe and (2) to explain.  If a candidate is required to explain e.g. a process in 4 steps, only the first 4 responses should be considered.  If, however a candidate is required to e.g. explain or describe how to transfer heights from one point to another using a transparent pipe level we need to consider that candidates may write a long description not necessarily well organised as an intellectual response may do. In this case the marker needs to evaluate the complete statement to judge if the candidate explained the required outcome satisfactorily and allocate marks on merit. The marker should apply his/her professional judgement with these types of questions.  Mark what the candidate wrote and do not award marks for answers that the marker thinks the candidate meant with what was written.  Indicate the tick or cross right at the position where the mark needs to be awarded or where the candidate made the error.  Accept the letter corresponding with the correct answer as well as the answer written in full in multiple-choice questions.  Accept incorrect spelling in one-word answers unless the spelling changes the meaning of the answer. 2. For calculations:  A mark is only awarded if the correct unit is written next to the answer.  If TWO marks are awarded, ONE mark is awarded for the answer and ONE mark for the correct unit.  Where the candidate made a principle error, e.g. use an incorrect method to calculate the answer, marks will be awarded for the correct values used in the calculation. No marks will be awarded for the answer of the incorrect method that was followed.  Where an incorrect answer could be carried over to the next step, the first answer will be deemed incorrect. However, should the incorrect answer be carried over correctly, the marker has to recalculate the values, using the incorrect answer from the first calculation. If correctly used, the candidate should receive the full marks for subsequent calculations. Copyright reserved Please turn over

Downloaded from hlayiso.com Civil Technology: Woodworking 3 DBE/November 2021 NSC – Marking Guidelines  Markers should consider when and where a candidate has rounded off in a calculation, as well as the subsequent effect it has on the final answer obtained. The mark for calculations should therefore be awarded on merit.  Alternative methods of calculations must be considered, provided that the correct answer is obtained. 3. When marking drawings:  The member for which the mark should be awarded should be drawn correctly in the correct position to receive a mark.  A member incorrectly drawn but wrongfully repeated in another position will be awarded the mark for the repeated incorrect member, provided that the marking guidelines provide for TWO or more marks for that member (positive marking).  Marks can only be awarded for a label if the label is correctly indicating the correct member.  Scale drawings should always be marked using an appropriate mask. When a candidate drew the wrong drawing, e.g.:  A horizontal sectional view instead of a vertical sectional view, no marks will be allocated to the drawing as the candidate did not respond to the expected outcome.  An orthographic view instead of a sectional view, no marks will be allocated to the drawing as the candidate did not respond to the expected outcome.  An orthographic view instead of an isometric view, no marks will be allocated to the drawing as the candidate did not respond to the expected outcome. Copyright reserved Please turn over

Downloaded from hlayiso.com Civil Technology: Woodworking 4 DBE/November 2021 NSC – Marking Guidelines QUESTION 1: OHSA, SAFETY, MATERIALS, TOOLS, EQUIPMENT AND JOINING (GENERIC) 1.1 1.1.1 Galvanising  (1) 1.1.2 Paint  (1) 1.1.3 Electroplating  (1) 1.1.4 Curing  (1) 1.1.5 Powder coating  (1) 1.2 1.2.1 Scaffolding must be:  Properly propped against displacement.   Able to carry the mass or load.   Securely and effectively braced to ensure stability/Stable.  Secured at suitable vertical and horizontal distances to the structure.  Free of defects/sharp edges.  Constructed so that it has a safety factor of at least two.  Levelled.  Inspected regularly. ANY TWO OF THE ABOVE (2) 1.2.2 Toe-board/Kickboard  (1) 1.2.3 When working on scaffolding:  Wear a safety harness/safety equipment/PPE.   Do not throw any materials from a scaffold.   Do not throw any tools from a scaffold.  Never jump from a scaffold.  Do not overload a scaffold.  Remove or cover sharp edges or corners of a scaffold.  Scaffolds should be kept free of waste/obstructions. ANY TWO OF THE ABOVE (2) 1.3 To remove waste:  Use a chute/pipe chute   Use a conveyor belt/ramp   Use a bucket with a rope/pulley system  Use a forklift/mobi-lift/TLB/crane with a bucket/builders’ hoist ANY TWO OF THE ABOVE (2) Copyright reserved Please turn over

Downloaded from hlayiso.com Civil Technology: Woodworking 5 DBE/November 2021 NSC – Marking Guidelines 1.4 Safe use of trestle scaffolds:  Scaffolds should be soundly constructed of solid material.   All precautionary measures should be taken to prevent the unexpected spreading of its supporting legs when in use.   Trestles should not exceed a height of 3 m.  Trestles scaffolds should not consist of more than two tiers. ANY TWO OF THE ABOVE (2) 1.5 Hoisting materials and equipment in a builder’s hoist:  Materials and equipment should be firmly stacked.   Materials and equipment should be correctly stacked.  Materials and equipment should be properly secured.  Gates must be shut when in use.  Overhead protection must be provided.  Qualified person must operate the builders' hoist.  Emergency brake mechanism must be installed.  Not exceed the working capacity of the hoist/Not overload the hoist.  Safety measures must be displayed inside the cage. ANY ONE OF THE ABOVE (1) 1.6  Drill a hole through the two metal plates.   Insert the bolt into the drilled holes.   Fasten the two plates with a bolt and nut.  (3) 1.7 Used to locate:  Materials behind walls.   Materials in ceilings.  Materials under floors.  Steel bars  Copper pipes  Ferrous metals  Non-ferrous metals  Electrical wiring  Services  Wood/Wooden/metal studs behind walls.  The distance to and from an object. ANY ONE OF THE ABOVE (1) Care Protect the multi-detector against:  Moisture/Water/Corrosion   Direct sunlight/heat  Extreme temperature changes  Bumps/Falling  Damage caused by the release of acid from the battery ANY ONE OF THE ABOVE (1) [20] Copyright reserved Please turn over

Downloaded from hlayiso.com Civil Technology: Woodworking 6 DBE/November 2021 NSC – Marking Guidelines QUESTION 2: GRAPHICS AS MEANS OF COMMUNICATION (GENERIC) ANSWER SHEET 2 NO. QUESTIONS ANSWERS MARKS Identify the scale you will use for the 1 : 200  1. site plan and the floor plan 2 1 : 100  respectively. Who is responsible to verify all 2. dimensions and levels on site before Contractors  1 commencing work? What type of fencing does the 3. architect recommend for the new Palisade fencing/Palisade  1 dwelling? State the colour that you would use to 4. indicate the new dwelling on the site Red  1 plan. 5. Identify number 1. Boundary line  1 6. Identify number 2. Building line  1 7. Identify number 3. Electricity meter/Watt meter  1 8. Identify number 4. Entrance/Exit/Driveway  1 9. Identify number 5. Water storage tank/Water tank  1 10. Identify number 6. Pavement/Walkway/Sidewalk  1 North point/North symbol/North 11. Identify number 7. 1 sign/North direction  Municipal connection/Municipal 12. Identify number 8. 1 manhole/Main sewer connection  13. Identify number 9. Manhole  1 Determine the distance between 14. number 2 and the new dwelling on the 4 000 mm/4 m  1 eastern side of the building. Deduce the plot number of the new 15. Plot 31  1 dwelling from FIGURE A. Which elevation is the closest to 16. South elevation/South  1 Loerie Street? What is the plot number of the 17. property on the western side of the Plot 35  1 dwelling? Copyright reserved Please turn over

Downloaded from hlayiso.com Civil Technology: Woodworking 7 DBE/November 2021 NSC – Marking Guidelines No window in the dining room  110 mm of outside wall is incorrect/ Internal wall thickness  Light switch in bathroom is in wrong place 220 mm inside wall in room A is incorrect/External wall thickness No step at the kitchen door No door in dining room/living room/door opening No arch indicated at dining 2 18. Deduce TWO faults on FIGURE B. room/living room Floor covering not indicated in rooms No socket outlets/plugs in rooms No hatching of floor plan No ceiling light in passage No dashed/hidden detail lines shown between living/dining/kitchen to indicate the arch ANY TWO OF THE ABOVE Which natural feature is indicated on Trees/Shrubs  1 19. the site plan? What is wrong with the electrical The light switch is fitted on the 20. installation in the bathroom in inside of the bathroom/Switch is 1 FIGURE B? incorrectly placed.  21. Identify number 10. Ramp  1 Sink–double bowl/ 22. Identify number 11. 1 Double bowl sink/Double sink  23. Identify number 12. Two-way switch  1 One-way switch single-pole/One- 24. Identify number 13. 1 way switch/Single-pole switch  25. Draw the symbol of a socket outlet. 2   26. Draw the symbol for a shower.   2 Copyright reserved Please turn over

Downloaded from hlayiso.com Civil Technology: Woodworking 8 DBE/November 2021 NSC – Marking Guidelines Draw the symbol for a wall-mounted   2 27. light. Dressing room/Walk-in closet  En-suite/Bathroom  Gym/Gymnasium Study/Office 28. Recommend TWO uses for ROOM A. 2 Store/Rest/Baby/Play/Games/ Guest/TV room Laundry ANY TWO OF THE ABOVE 24 500  – 5 000  – 9 000  – 3 000  – 5 000  Calculate the omitted horizontal = 2 500  mm 29. dimension on the site plan. Give your ANY OTHER CALCULATION 6 answer in mm. Show ALL calculations. METHOD TO ARRIVE AT THE ANSWER TOTAL: 40 Copyright reserved Please turn over

Downloaded from hlayiso.com Civil Technology: Woodworking 9 DBE/November 2021 NSC – Marking Guidelines QUESTION 3: CUPBOARDS, CASEMENTS, WALL-PANELING AND QUANTITIES (SPECIFIC) 3.1 3.1.1 Bottom rail of fanlight  (1) 3.1.2 Transom  (1) 3.1.3 Wood/Wooden (glazing) bead/Quadrant/Quarter round  (1) 3.1.4 Reason for moulding:  To enhance appearance/Decorative appearance   To provide a good finish ANY ONE OF THE ABOVE (1) 3.1.5 Small window above door/window  (1) 3.1.6 To prevent water/moist from entering:  The house through the casement   The casement ANY ONE OF THE ABOVE (1) 3.2.1 Member Quantity Unit Length Width Thickness Material Side 2 mm 2 400 550  16 Melamine Bottom 1 mm 1 068 550 16 Melamine Top 1 mm 1 068  550 16 Melamine Base front 1 mm 1 068 80  16 Melamine rail Shelf board 4 mm 550 526  16 Melamine Intermediate 1 mm 2 368  550 16 Melamine side Back 1 mm 2 400  1 100 16 Melamine (7) Copyright reserved Please turn over

Downloaded from hlayiso.com Civil Technology: Woodworking 10 DBE/November 2021 NSC – Marking Guidelines 3.2.2  SIDE RAIL  FRONT RAIL  TOP  SHELF BOARD BACK   INTERMEDIATE SIDE  BOTTOM  BASE BACK RAIL BASE FRONT RAIL   HATCHING  ASSESSMENT CRITERIA MARK Correctness of drawing: Side rail 1 Front rail 1 Top 1 Shelve boards 2 Intermediate side 1 Bottom 1 Back/Back rail 1 Base front rail 1 Base back rail 1 Hatching 1 TOTAL: 11 (11) Copyright reserved Please turn over

Downloaded from hlayiso.com Civil Technology: Woodworking 11 DBE/November 2021 NSC – Marking Guidelines 3.3 PLYWOOD  BOARD  SKIRTING  ROUGH GROUND  QUADRANT MOULD  FLOOR COVERING  APPLICATION OF SCALE ASSESSMENT CRITERIA MARK Correctness of drawing: Plywood board 1 Skirting 1 Rough ground 1 Quadrant mould 1 Floor covering 1 Application of scale 1 TOTAL: 6 DRAWING NOT TO SCALE USE A MASK TO MARK THIS QUESTION (6) [30] Copyright reserved Please turn over

Downloaded from hlayiso.com Civil Technology: Woodworking 12 DBE/November 2021 NSC – Marking Guidelines QUESTION 4: ROOFS, CEILINGS, TOOLS, EQUIPMENT AND MATERIALS (SPECIFIC) 4.1 4.1.1 F (1) 4.1.2 H/B  (1) 4.1.3 I (1) 4.1.4 K (1) 4.1.5 B (1) 4.1.6 J (1) 4.1.7 A (1) 4.1.8 E (1) 4.2 Both machines must be:  Switched on before coming into contact with the work piece.   Switched off when lifting the machine from the work piece.  (2) 4.3 Safe handling of the square chisel with its drill (mortising attachment):  The square chisel with its drill bit must be securely tightened.   Ensure a clearance of 1 mm between the tip of the bit and the cutting edge of the chisel.   Never use a blunt chisel and drill bit. ANY TWO OF THE ABOVE (2) 4.4 When working with a belt sander and router:  Place both hands on the handles when operating these machines.   Keep your hands away from moving parts. ANY ONE OF THE ABOVE (1) 4.5 4.5.1 Metal T-strip  (1) 4.5.2 Tie beam  (1) 4.5.3 Materials for trapdoor:  Gypsum board/Rhino board   Timber/Plywood/Masonite/Hardboard   Block board   Metal  Fibre-cement/Nu-tech  PVC/Plastic  ISO board ANY THREE OF THE ABOVE (3) Copyright reserved Please turn over

Downloaded from hlayiso.com Civil Technology: Woodworking 13 DBE/November 2021 NSC – Marking Guidelines 4.5.4 Aluminium is popular because:  It is light in weight.   It provides an aesthetic finish/No need to paint it.   It is durable/strong/corrosion free.  It is easy to fix against brandering. ANY TWO OF THE ABOVE (2) 4.6  Lean-to roofs/Flat roofs   Couple roofs  (2) 4.7 King post roof: Tie beam  Collar-tie roof: Collar beam  (2) 4.8 Ridge beam  (1) 4.9 To secure/fix the rafters to the ridge beam.  (1) 4.10 The number of the queen posts will be determined by the:  Length of the tie-beam.   Span of the truss/building. ANY ONE OF THE ABOVE (1) 4.11 Components used:  Soffit hanger   Bearer   Soffit board  Quarter-round moulding  Ceiling board/Slats  Fascia board ANY TWO OF THE ABOVE (2) 4.12 2 4 6 3 5 1 MARK STRICTLY ACCORDING TO SEQUENCE (6) 4.13 Type of varnish finish:  Glossy   Matt   Satin/Sheen ANY TWO OF THE ABOVE (2) Copyright reserved Please turn over

Downloaded from hlayiso.com Civil Technology: Woodworking 14 DBE/November 2021 NSC – Marking Guidelines 4.14 Sanding sealer can be applied with a:  Spray gun   Brush ANY ONE OF THE ABOVE Wax can be applied with a:  Sponge   Shoe brush/Brush  Cloth ANY ONE OF THE ABOVE (2) 4.15 Waxed surfaces tend to make:  White spots on the surface   White rings on the surface ANY ONE OF THE ABOVE (1) [40] Copyright reserved Please turn over

Downloaded from hlayiso.com Civil Technology: Woodworking 15 DBE/November 2021 NSC – Marking Guidelines QUESTION 5: CENTERING, FORMWORK, SHORING AND GRAPHICS AS MEANS OF COMMUNICATION (SPECIFIC) 5.1 5.1.1 C (1) 5.1.2 A (1) 5.1.3 D (1) 5.1.4 A (1) 5.1.5 B (1) 5.2 5.2.1 A: Segmental arch/Oval/Elliptical arch  (1) B: Semi-circular arch/Half round arch  (1) 5.2.2 Closed laggings  (1) 5.2.3 450 mm  (1) 5.2.4 Ribs can be secured by:  Ties   Struts ANY ONE OF THE ABOVE (1) 5.3  KING POST   QUEEN POST      TIE BEAM STRUT RAFTER  ASSESSMENT CRITERIA MARK Correctness of drawing: Rafters 2 King post 1 Queen posts 2 Struts 2 Tie beam 1 Label (Any ONE) 1 TOTAL: 9 (9) Copyright reserved Please turn over

Downloaded from hlayiso.com Civil Technology: Woodworking 16 DBE/November 2021 NSC – Marking Guidelines 5.4 SHUTTERBOARD   BEARER JOIST SIDE BEAM/SIDE   CLEAT/CLAMP STRUT   WEDGE     KICKER/FIXING PLATE SOFFIT BOARD  ASSESSMENT CRITERIA MARK Correctness of drawing: Bearer joists 2 Clamps/Cleats 2 Struts 2 Wedges 2 Kicker/Fixing plates 2 Label (Any ONE) 1 TOTAL: 11 (11) [30] Copyright reserved Please turn over

Downloaded from hlayiso.com Civil Technology: Woodworking 17 DBE/November 2021 NSC – Marking Guidelines QUESTION 6: SUSPENDED FLOORS, STAIRCASES, IRONMONGERY, DOORS AND JOINING (SPECIFIC) 6.1 6.1.1 Night latch/lock  (1) 6.1.2 Mortise lock  (1) 6.1.3 Rim lock  (1) 6.1.4 Straight cupboard lock  (1) 6.2 6.2.1 Between the leg and the rail.  (2) 6.2.2         ASSESSMENT CRITERIA MARK Correctness of drawing: Rail 1 Haunch 4 Tenon 3 TOTAL: 8 (8) Copyright reserved Please turn over

Downloaded from hlayiso.com Civil Technology: Woodworking 18 DBE/November 2021 NSC – Marking Guidelines 6.3 WALL FLOOR JOIST    TRUSS OR JOIST HANGER (3) 6.4 STRAIGHT FLIGHT OF STAIRS WITH A LANDING   OR (2) AND Copyright reserved Please turn over

Downloaded from hlayiso.com Civil Technology: Woodworking 19 DBE/November 2021 NSC – Marking Guidelines STAIRWELL WITH A HALF-LANDING    OR (3) Copyright reserved Please turn over

Downloaded from hlayiso.com Civil Technology: Woodworking 20 DBE/November 2021 NSC – Marking Guidelines 6.5 DIRECTION OF GRAIN TONGUE AND GROOVE FLOORBOARDS SKIRTING WALL  QUADRANT  PLASTER   JOIST AIRBRICK  BEARER   ANT GUARD WALL PLATE  DPC BRICK NGL  PIER  FOUNDATION ASSESSMENT CRITERIA MARK Correctness of drawing: Closure of opening between wall and floorboards 2 Members supporting flooring boards: Wall plate 1 Bearer 1 Joists 2 One-brick pier with foundation 2 Prevention of termites and moisture at the pier 2 TOTAL: 10 Copyright reserved Please turn over

Downloaded from hlayiso.com Civil Technology: Woodworking 21 DBE/November 2021 NSC – Marking Guidelines 6.6 SIDELIGHT STILE FRAME STILE  BOTTOM RAIL WITH   REBATE   RAISED AND FIELDED PANEL   GROOVE  ASSESSMENT CRITERIA MARK Correctness of drawing: Frame stile with rebate 2 Sidelight stile 1 Groove/Clearance for expansion 1 Bottom rail 1 Raised and fielded panel 2 Hatching 1 TOTAL: 8 (8) [40] TOTAL: 200 Copyright reserved