Civil Technology Grade 12 November 2024 NSC Memo (English)

GRAAD 12 NATIONAL SENIOR CERTIFICATE GRADE 12 CIVIL TECHNOLOGY: CIVIL SERVICES NOVEMBER 2024 MARKING GUIDELINES MARKS: 200 These marking guidelines consist of 18 pages. Copyright reserved Please turn over

Civil Technology: Civil Services 2 DBE/November 2024 NSC – Marking guidelines INSTRUCTIONS FOR 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 guideline. • There are TWO approaches to answering questions; these are (1) to describe and (2) to explain. 1. If a candidate is required to explain e.g., a process in 4 steps, only the first 4 responses should be considered. 2. However, if for example candidate is required to explain or describe a process, we need to consider that that candidates may write a long description, not necessarily well organised. 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. • Mark what the candidate wrote and do not interpret or predict responses. • 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 or similar questions. • Accept incorrect spelling in answers unless the spelling changes the meaning of the answer. • If a learner writes two or more answers separated by a slash (/) mark only the first response, unless the additional answer/s are different names for the same item e.g., Yale lock/Night latch. In this case, the answer for the response should be awarded and the slash (/) should NOT be considered as an additional answer. 2. For calculations: • A mark is only awarded if the correct unit is written next to the answer. If the question states that the answer must be in a specific unit, a mark will ONLY be awarded if the answer has the correct unit as indicated in the question. • Marks will only be allocated for the correct values if the candidates add instead of multiply. NO marks will be awarded for the calculations and the answer. • Where an incorrect answer is correctly carried over, the marker must recalculate the values, using the incorrect answer from the first calculation. If correctly used, the candidate should receive the full marks for subsequent calculations. • Alternative methods of calculations must be considered, provided that the correct answer is obtained. • For the calculation of quantities marks will be awarded for the correct use of the dimension paper. Copyright reserved

Civil Technology: Civil Services 3 DBE/November 2024 NSC – Marking guidelines 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 guideline 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. Do not consider labels for members of which the labels were provided on the answer sheet. • Scale drawings should always be marked using an appropriate mask. • If the incorrect/wrong drawing was drawn, the candidate can be awarded for only what was provided for on the marking guideline. • If a line diagram or an orthographic view instead of a pictorial drawing (isometric/oblique/perspective) is drawn, the first assessment criteria for each member will be marked wrong, but marks will be awarded for the subsequent members if TWO or more marks are awarded for the same member. • If candidates draw/give more information than what is required, mark strictly according to the assessment criteria. 4. Incorrect numbering of questions: • If a candidate numbered an incorrectly, but the answer is in the correct position according to the sequence of the questions in the question paper, circle then the incorrect numbering and mark the response. • If questions were answered randomly not following the same sequence as in the question paper and the learner numbered incorrectly, the response should NOT be marked. 5. Duplication of responses and questions answered in the correct place: • If a question is answered twice, mark the first response. • If a question should be answered on an answer sheet and the candidate answered it on both the answer sheet and in the answer book, mark the response on the answer sheet and cancel the response in the answer book. • If the question was answered in the answer book instead of on the answer sheet, mark the response in the answer book according to the assessment criteria on the marking guideline. Copyright reserved Please turn over

Civil Technology: Civil Services 4 DBE/November 2024 NSC – Marking guidelines QUESTION 1: OHSA, MATERIALS, TOOLS, EQUIPMENT AND JOINING (GENERIC) 1.1 1.1.1 3m✓ (1) 1.1.2 3m✓ (1) 1.1.3 Fire-fighting measures ✓ (1) 1.1.4 ensure that the ladder does not protrude excessively ✓ (1) 1.1.5 Powder coating ✓ (1) 1.1.6 the thickness of under size parts can be increased ✓ (1) 1.1.7 head and pin ✓ (1) 1.1.8 preventing backing off ✓ (1) 1.1.9 wood preservatives ✓ (1) 1.1.10 spiral ✓ (1) 1.2 B✓ (1) 1.3 Diameter of thread/Size of Rawl bolt ✓ (1) 1.4 Properties and advantages of cured concrete: 1.4.1 • Improves the protection of the steel reinforcement ✓ • Improves the protection against rust ANY ONE OF THE ABOVE (1) 1.4.2 Cured concrete can carry more weight. ✓ (1) 1.5 A multi-detector can be used: • to detect materials in or behind a wall/carpentry/plumbing/construction surface. ✓ • to determine distances to and from an object. ANY ONE OF THE ABOVE A laser level can be used: • to indicate horizontal and/or vertical levels/heights/slopes. ✓ (2) Copyright reserved Please turn over

Civil Technology: Civil Services 5 DBE/November 2024 NSC – Marking guidelines 1.6 Uses of dumpy level: • Determine differences between levels and vertical heights ✓ • Determine levels ✓ • Determine slopes • Determine horizontal angles/angles • Setting out of buildings • Transferring levels and heights • Determine the distance from the dumpy level to an object/telescopic staff ANY TWO OF THE ABOVE (2) 1.7 Caring for the telescopic staff: • The staff must always be folded when it is transported ✓ • Keep it in a bag to prevent damage/scratching of the graduation during transportation ✓ • Ensure that the plastic or metal clips are in working order to keep the sections in position • Clean after use • Store in a safe dry place ANY TWO OF THE ABOVE (2) [20] Copyright reserved Please turn over

Civil Technology: Civil Services 6 DBE/November 2024 NSC – Marking guidelines QUESTION 2: GRAPHICS AS MEANS OF COMMUNICATION (GENERIC) NO. QUESTIONS ANSWERS MARKS What is the measurement of the 1. 12 000 mm/12 m ✓ 1 dwelling facing Hibiscus Street? 2. Identify number 1. Manhole/MH ✓ 1 Identify the number indicating the 3. 4✓ 1 building line. Identify number 2. 4. Boundary line ✓ 1 5. Identify number 3. Driveway/Entrance/Exit ✓ 1 Write down the abbreviation for 6. RE ✓ 1 number 5. Garage door: 7. Explain the purpose of number 6. 1 To enter/close/secure the garage ✓ How many fluorescent tubes are used 8. 1 x 40W /1/One ✓ 1 in number 7? How many one-way switch single-pole 9. 4/Four ✓ 1 switches are in the dwelling? How many built-in cupboards are in 10. 2/Two ✓ 1 the dwelling? What is omitted in terms of electrical Switch socket outlets/Socket 11. 1 installation in the bedrooms? outlets/Wall plugs ✓ Access points: • Sliding door/Lounge door/Door at Number 8/Number 8 ✓ Name TWO access points into the 12. • Garage doors/Rollup 2 dwelling. door/Door at Number 6/Number 6 ✓ How do you know in which direction 13. By the direction of an arrow ✓ 1 the door at number 8 will open? Bath/Bidet/Urinal/Vanity/Bathroom Name ONE other fixture that can be cabinet/Wash hand basin/Basin/ 14. installed in the bathroom indicated by 1 Extractor fan/Heated towel rail ✓ number 9. (Abbreviations is NOT accepted) 15. Identify number 10. Hot-water cylinder ✓ 1 Copyright reserved Please turn over

Civil Technology: Civil Services 7 DBE/November 2024 NSC – Marking guidelines Which plot is on the eastern side of 16. Plot number 27/Number 27/27 ✓ 1 plot number 23? How many inside doors are in the 17. 4/Four ✓ 1 building? How many 2 600 mm x 1 400 mm 18. 3/Three ✓ 1 windows are in the building? Who checked the drawing of the new 19. P Bot ✓ 1 dwelling? No step ✓ Why will it be difficult to enter the No porch/stoep 20. dwelling at number 8 if the NGL is 1 300 mm lower than the FFL? No ramp The door is at a higher level Who was responsible for the printing 21. Frog printers ✓ 1 of the building plan? Deduce from the notes column the 22. 14/04/2024 ✓ 1 date that revision 1 took place. In which town will the new dwelling be 23. Malubu ✓ 1 erected? ✓ ✓ ✓ Draw the symbol for a sink unit – 24. double. ✓ ✓ 5 OR ✓ 25. Draw the symbol for hardcore filling. ✓ 2 Calculate the metres of clear-view 25 000 ✓ + 25 000 ✓ + 30 000 ✓ + fencing that would be needed to fence 30 000 ✓ – 4 000 mm ✓ plot number 23, excluding the = 106 000 mm = 106 ✓m 26. driveway. 6 OR Give your answer in metres and show 25 + 25 + 30 + 30 – 4 = 106 m all calculations. 39,6 m² ✓ = 6,6 m The internal area of the garage is 6m✓ 39,6 m². Calculate the internal length = 6 600 mm ✓ 27. of number 11. OR 3 Give your answer in mm and show all 39 600 000 mm² calculations. 6 000 mm = 6 600 mm TOTAL: 40 Copyright reserved Please turn over

Civil Technology: Civil Services 8 DBE/November 2024 NSC – Marking guidelines QUESTION 3: CONSTRUCTION ASSOCIATED WITH CIVIL SERVICES, OHSA AND QUANTITIES (SPECIFIC) 3.1 3.1.1 Incidence board ✓ (1) 3.1.2 Concrete lid ✓ (1) 3.1.3 Wedge ✓ (1) 3.1.4 1:90 ✓ (1) 3.1.5 Queen closer ✓ (1) 3.2 3.2.1 Safety harness ✓ (1) 3.2.2 Extractor fan/Blower/Fan/Ventilation ✓ (1) 3.2.3 Respiratory mask/Respirator/Breathing apparatus ✓ (1) Copyright reserved Please turn over

Civil Technology: Civil Services 9 DBE/November 2024 NSC – Marking guidelines 3.3 BRANCH CHANNEL 1 2 4 INLET OUTLET 3 5 6 BENCHING WALL Any TWO labels 7 7 DRAWING/BRANCH CHANNEL CAN BE ROTATED IN ANY DIRECTION OR BRANCH CHANNEL 1 2 INLET 4 OUTLET 3 5 6 BENCHING WALL 7 7 NO. ASSESSMENT CRITERIA MARK 1 Walls 1 2 Hatching 1 3 Straight channel 1 4 Branch channel 1 5 Direction of flow 1 6 Benching labelled 1 7 Any TWO labels 2 (8) TOTAL: 8 Copyright reserved Please turn over

Civil Technology: Civil Services 10 DBE/November 2024 NSC – Marking guidelines 3.4 3.4.1 Rodding eye ✓ (1) 3.4.2 1✓ (1) 3.4.3 110/100 mm ✓ (1) 3.4.4 PVC ✓ (1) 3.4.5 1✓ (1) 3.4.6 3 pipes of 6 m lengths ✓ (1) 3.4.7 Straight coupling double socket/Kimberley socket ✓ (1) 3.5 2 2 3 1 1 1 1 NO. ASSESSMENT CRITERIA MARK 1 Stretcher course 4 2 1/ Bricks 2 2 3 Any full brick 1 TOTAL: 7 (7) [30] Copyright reserved Please turn over

Civil Technology: Civil Services 11 DBE/November 2024 NSC – Marking guidelines QUESTION 4: COLD- AND HOT-WATER SUPPLY, TOOLS, EQUIPMENT AND MATERIALS (SPECIFIC) 4.1 4.1.1 Mechanisms to open a full-way valve: A - is opened with a wheel/hand wheel that move the tapered gate up and down ✓ B - is opened with hand lever/lever that rotates the ball ✓ (2) 4.1.2 Open and closing mechanism inside full-way valve: Full-way valve with wheel: Gate ✓ Full-way valve with lever handle: Ball ✓ (2) 4.2 4.2.1 Pipe-thread cutting machine ✓ (1) 4.2.2 Use of the pipe-tread cutting machine: • To thread pipes ✓ • To cut pipes ✓ • To thread nuts • To thread bolts ANY TWO OF THE ABOVE (2) 4.2.3 Grease/Lubricant oil/Oil ✓ (1) 4.3 4.3.1 Airlocks ✓ (1) 4.3.2 Airlock preventions: • Pipes should be installed horizontally with an upwards slope in the direction of flow/Pipes should be installed correctly ✓ • Install vent valves in the pipeline. ✓ • Do not install a small diameter feed pipe to a bigger diameter pipe ANY TWO OF THE ABOVE (2) 4.4 4.4.1 Element / Heating element ✓ (1) 4.4.2 Anode ✓ (1) 4.4.3 The thermostat regulates ✓ the temperature of the water ✓ OR The thermostat switches the heating element on or off (2) 4.5 4.5.1 PS ✓ OR ✓ (2) Copyright reserved Please turn over

Civil Technology: Civil Services 12 DBE/November 2024 NSC – Marking guidelines 4.5.2 ✓ ✓ (2) 4.5.3 ✓ ✓ (2) 4.6 4.6.1 A - Cold water inlet pipe/Pipe for cold water supply/Inlet ✓ B - Hot water outlet pipe/Pipe for hot water supply/Outlet ✓ (2) 4.6.2 The purpose of the pressure reducing valve is to: • lower the incoming water pressure ✓ • balance the water pressure of the hot- and cold-water supply ✓ (2) 4.6.3 Safety valve/Temperature and pressure safety valve/TP Valve ✓ (1) 4.6.4 The drip tray: • collects water if the geyser leaks ✓ • prevents water damage to the building • pipe connected to drip tray allows water to flow outside ANY ONE OF THE ABOVE (1) 4.6.5 Vacuum breaker ✓ (1) 4.7 4.7.1 F✓ (1) 4.7.2 B✓ (1) 4.7.3 A✓ (1) 4.7.4 G✓ (1) 4.7.5 H✓ (1) 4.8 4.8.1 Dezincification ✓ (1) 4.8.2 Electrolytic reaction ✓ (1) 4.8.3 Galvanic corrosion ✓ (1) Copyright reserved Please turn over

Civil Technology: Civil Services 13 DBE/November 2024 NSC – Marking guidelines 4.9 1 OR 2 3 1 NO. ASSESSMENT CRITERIA MARK 1 110 mm Soil pipe 2 2 Inspection eye 1 3 90° Reducing socket for waste pipe 1 TOTAL: 4 (4) [40] Copyright reserved Please turn over

Civil Technology: Civil Services 14 DBE/November 2024 NSC – Marking guidelines QUESTION 5: GRAPHICS AS MEANS OF COMMUNICATION, ROOF WORK AND STORM WATER (SPECIFIC) 5.1 2 1 1 1 1 2 PICTORIAL VIEW NOT ACCEPTED NO. ASSESSMENT CRITERIA MARK 1 Development of stopped end 4 2 Edges/Seams 2 TOTAL: 6 (6) 5.2 Method of channelling storm water: • Roof gutters/Gutters ✓ • Rainwater down pipe/Down pipe • Channels/Surface channels • Inclined surfaces • Roadside gutters • Road kerbs • Storm water drains • Furrows ANY ONE OF THE ABOVE (1) 5.3 ✓ ✓ ✓ ✓ Precast open channel (4) Copyright reserved Please turn over

Civil Technology: Civil Services 15 DBE/November 2024 NSC – Marking guidelines 5.4 NO. ASSESSMENT CRITERIA MARK 1 Projection lines to apex 1 2 Determine true length 2 3 Projection lines and arcs 3 from pyramid 4 4 Development of base of 5 6 4 pyramid 5 Development of top of 5 pyramid 7 5 6 3 mm seams (any ONE) 1 5 7 Folding lines (any TWO) 2 4 TOTAL: 19 3 5 3 USE A MASK TO MARK THIS QUESTION 7 5 1 5 4 3 4 2 A 2 (19) [30] Copyright reserved Please turn over

Civil Technology: Civil Services 16 DBE/November 2024 NSC – Marking guidelines QUESTION 6: SEWERAGE, SANITARY FITTINGS AND JOINING (SPECIFIC) 6.1 6.1.1 B✓ (1) 6.1.2 D✓ (1) 6.1.3 A✓ (1) 6.1.4 C✓ (1) 6.1.5 D✓ (1) 6.2 6.2.1 Single-bowl urinal /Single stall urinal ✓ (1) 6.2.2 A – Flush valve/Automatic flush valve/Push button valve/Flush ✓ B – P-trap/Metal trap/Earthenware trap ✓ (2) 6.2.3 The flush valve: • releases water when pressed or after movement ✓ • flushes/cleans the urinal ANY ONE OF THE ABOVE (1) 6.2.4 Removable mesh guard/Urinal mat/Any object that can prevent foreign matter to enter the urinal can be accepted ✓ (1) 6.3 6.3.1 Pointed head/Head/Soldering iron/Non-electrical soldering iron ✓ (1) 6.3.2 The head is made of copper because: • copper is a good conductor of heat ✓ • copper retains heat well ANY ONE OF THE ABOVE (1) 6.3.3 The soldering stick has a composition of tin and lead. ✓ (1) 6.3.4 Reasons for applying flux: • Cleans the joint/surface ✓ • Prevents oxidation/rust ✓ • Promotes the flow of solder/capillary action ANY TWO OF THE ABOVE (2) 6.4 The process of joining PVC pipes to a straight coupler using a solvent: • Use sandpaper to remove wax surface of the pipe and coupler and create a chamfer. ✓ • Clean ends of the pipes and the coupler. ✓ • Apply solvent/PVC weld to outside of the pipes. ✓ • Push in coupler over the pipes and clean excess solvent from the joint. ✓ (4) Copyright reserved Please turn over

Civil Technology: Civil Services 17 DBE/November 2024 NSC – Marking guidelines 6.5 CONCRETE COVER SLAB MANHOLE COVER WATERPROOF PLASTER PARTITION WALL 1 2 INFLOW PIPE DISCHARGE OUTFLOW SETTLING 3 CHAMBER CHAMBER 3 PIPE 5 6 7 7 WATER LEVEL SCUM 4 4 OPENING CONCRETE SLAB NO. ASSESSMENT CRITERIA MARK 1 Partition wall 1 2 Hatching of partition wall 1 3 Plaster on both sides of 2 partitioning wall 4 Opening in partition wall 2 5 Indicating water level 1 6 Indicating scum 1 7 Labels: Water level Scum 2 TOTAL: 10 Copyright reserved Please turn over

Civil Technology: Civil Services 18 DBE/November 2024 NSC – Marking guidelines 6.6 NO. ASSESSMENT CRITERIA MARK 1 Inspection eyes 3 2 Branch pipes - 45° 3 3 Junction of the main sewer lines 1 quarter round/45° 4 Vent pipe correct position 1 5 Gully 1 6 Abbreviations – IE and VP 2 TOTAL: 11 MUNICIPAL CONNECTION MH/RE 1 1 6 IE IE 3 RE 5 4 2 2 6 G VP 2 IE 1 RE [40] TOTAL: 200 Copyright reserved