Civil Technology Grade 12 NSC November 2018 QP (Eng)

Downloaded from hlayiso.com NATIONAL SENIOR CERTIFICATE GRADE 12 CIVIL TECHNOLOGY: CIVIL SERVICES NOVEMBER 2018 MARKS: 200 TIME: 3 hours This question paper consists of 17 pages and 8 answer sheets. Copyright reserved Please turn over

Downloaded from hlayiso.com Civil Technology: Civil Services 2 DBE/November 2018 NSC 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. Answer each question as a whole. Do NOT separate subsections of questions. 4. Start the answer to EACH question on a NEW page. 5. Do NOT write in the margins of the ANSWER BOOK. 6. You may use sketches to illustrate your answers. 7. Write ALL calculations and answers in the ANSWER BOOK or on the attached ANSWER SHEETS. 8. Use the mark allocation as a guide to the length of your answers. 9. 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. 10. For the purpose of this question paper, the size of a brick should be taken as 220 mm x 110 mm x 75 mm. 11. Use your own discretion where dimensions and/or details have been omitted. 12. Answer QUESTIONS 2, 3.2, 3.6, 5.2, 5.3 and 6.3 on the attached ANSWER SHEETS using drawing instruments where necessary. 13. 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. 14. Drawings in the question paper are NOT to scale due to electronic transfer. 15. Google Images was used as the source for all photographs and pictures. Copyright reserved Please turn over

Downloaded from hlayiso.com Civil Technology: Civil Services 3 DBE/November 2018 NSC QUESTION 1: OHSA, 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–G) next to the question numbers (1.1.1 to 1.1.5) in the ANSWER BOOK, e.g. 1.1.6 H. COLUMN A COLUMN B 1.1.1 Sole plate A not to be used in the proximity of electrical wires 1.1.2 Aluminium ladder B to cover iron or steel with a layer of 1.1.3 Scaffold zinc to prevent it from rusting 1.1.4 Safety net C prevents splashing of chemicals 1.1.5 Galvanising D protect metal, wood and other materials against corrosion and decay E prevents falling objects from injuring workers F prevents vertical standards from sinking into the ground G should be provided with toe boards to prevent objects from falling off (5 x 1) (5) 1.2 Describe TWO safety precautions that must be adhered to when working on a scaffold. (2) 1.3 What is the purpose of the guard rail of a scaffold in terms of safety? (2) 1.4 Explain the purpose of painting. (2) 1.5 Describe ONE advantage of the curing process of concrete. (1) Copyright reserved Please turn over

Downloaded from hlayiso.com Civil Technology: Civil Services 4 DBE/November 2018 NSC 1.6 FIGURE 1.6 below shows a tool that is used in the building construction industry. A FIGURE 1.6 1.6.1 Identify tool A. (1) 1.6.2 Explain TWO uses of tool A. (2) 1.6.3 Explain why the batteries should be removed from the tool if the tool is not going to be used for a long time. (1) 1.7 FIGURE 1.7 below shows joining fixtures that are used on building sites and in workshops. A B FIGURE 1.7 1.7.1 Identify fastener A and fastener B. (2) 1.7.2 Explain ONE use of fastener A and fastener B respectively. (2) [20] QUESTION 2: GRAPHICS AS METHOD OF COMMUNICATION (GENERIC) 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. Copyright reserved Please turn over

Downloaded from hlayiso.com Civil Technology: Civil Services 5 DBE/November 2018 NSC 1 NOTES: Contractors must verify all dimensions and levels on site before commencing work. Architects to be notified immediately of any 2 discrepancies. 7 ARCHITECT'S SIGNATURE …………………. CLIENT'S SIGNATURE ……………….……. 3 The following must be placed in W1 W2 front of the sliding door: 4 1 : 10 8 5 W3 Access to the first floor must be by FFL 6 means of a: FIGURE A REVISION DATE DESCRIPTION PRINTED BY: DATE OF PRINT: 220 3 000 110 220 220 NKOSI PRINTERS 2018/10/02 DRAWING TITLE: SITE PLAN STAND 1843 9 PROJECT: PROPOSED DWELLING ON STAND 1843, 2 000 2 000 DIEPRIVIER W4 10 BATHROOM 11 PROJECT NO. DRAWING NO. 12 LOUNGE GR 557-102 557P9 13 W 14 DATE DRAWN CHECKED SCALE 15 110 W3 25/4/2018 JP MALOI P BRITZ 1 : 100 W3 4 000 REFERENCE CODE QP 1 - 2018 OFFICE 19 WINDOW 2 WINDOW 3 16 900 2 000 17 18 W2 220 1 200 1 200 110 2 800 220 FIGURE B 19 FIGURE 2 [40] Copyright reserved Please turn over

Downloaded from hlayiso.com Civil Technology: Civil Services 6 DBE/November 2018 NSC QUESTION 3: CONSTRUCTION ASSOCIATED WITH CIVIL SERVICES, OHSA AND QUANTITIES (SPECIFIC) Start this question on a NEW page. 3.1 FIGURE 3.1 below shows a sectional view of a manhole. Study the drawing and answer the questions that follow. A B FIGURE 3.1 3.1.1 What is the main function of a manhole? (1) 3.1.2 Identify A. (1) 3.1.3 Identify B. (1) 3.1.4 Manholes that are deeper than 750 mm should be set in frames and have greased double seals. Give TWO reasons why greased double seals are installed. (2) 3.2 ANSWER SHEET 3.2 shows a top view of a T-junction of a half-brick wall in stretcher bond built with common bricks. Draw the sectional front view on section A-A by projecting it from the top view. The front view must have FIVE brick courses. (10) 3.3 State THREE regulations that protect workers during excavations. (3) Copyright reserved Please turn over

Downloaded from hlayiso.com Civil Technology: Civil Services 7 DBE/November 2018 NSC 3.4 FIGURE 3.4 below shows TWO different types of shoring/shuttering. A B FIGURE 3.4 3.4.1 Different types of shoring are used for different soil types. Which type of shoring, A or B, will be suitable to use in loose or water-logged soil? (1) 3.4.2 Motivate your answer to QUESTION 3.4.1. (1) 3.5 Choose the correct word(s)/term in brackets. Write only the word(s)/term next to the question numbers (3.5.1 to 3.5.2) in the ANSWER BOOK. 3.5.1 Working in confined spaces, such as a (manhole/french drain/excavation), is one of the most dangerous tasks. (1) 3.5.2 A safety harness is clipped to a rope known as a (safety rope/ lifeline). (1) Copyright reserved Please turn over

Downloaded from hlayiso.com Civil Technology: Civil Services 8 DBE/November 2018 NSC 3.6 FIGURE 3.6 below shows an incomplete sectional view through the bricks and concrete floor slab of a manhole. Use ANSWER SHEET 3.6 and answer the following questions. 900 1 000 125 75 1 150 1 000 1 000 FIGURE 3.6 3.6.1 Calculate the volume of concrete that will be used for the foundation. Round off your answer to TWO decimals. (4) 3.6.2 Calculate the number of bricks needed for the manhole. Specifications:  The wall is a one-brick wide wall  The centre line for the brickwork of the manhole is 4,96 m  100 bricks per square metre (m²) are needed for a one-brick wall (4) [30] Copyright reserved Please turn over

Downloaded from hlayiso.com Civil Technology: Civil Services 9 DBE/November 2018 NSC QUESTION 4: COLD AND HOT-WATER SUPPLY, TOOLS, EQUIPMENT AND MATERIALS (SPECIFIC) Start this question on a NEW page. 4.1 FIGURE 4.1 below shows a geyser. FIGURE 4.1 4.1.1 Identify the type of geyser in FIGURE 4.1 above. (1) 4.1.2 Which part inside the geyser heats the water? (1) 4.1.3 Geysers use a lot of electricity. Recommend ONE other device that can be used to heat water without using electricity. (1) 4.2 Many different faults can occur in hot-water systems. Describe ONE cause of the following faults in hot-water systems: 4.2.1 Dripping geyser overflow (1) 4.2.2 No hot water (1) 4.2.3 Water leaking through the ceiling (1) Copyright reserved Please turn over

Downloaded from hlayiso.com Civil Technology: Civil Services 10 DBE/November 2018 NSC 4.3 Choose a description from COLUMN B that matches an item in COLUMN A. Write only the letter (A–G) next to the question numbers (4.3.1 to 4.3.5) in the ANSWER BOOK, e.g. 4.3.6 H. COLUMN A COLUMN B 4.3.1 Vacuum breaker A loose pipework 4.3.2 Heat pump B located above the solar panel 4.3.3 Pressure control valve C located below the solar panel 4.3.4 Electrical isolator D switches electricity supply to the geyser on and off 4.3.5 Water tank E reduces the pressure of incoming water supply F allows air to enter the pipe when necessary G extracts heat from the air and uses it to generate hot water (5 x 1) (5) 4.4 Draw the SANS approved symbols for the followings fittings used in hot water systems: 4.4.1 Automatic shut-off valve (2) 4.4.2 Non-return valve (2) 4.4.3 Pressure reducing valve (2) 4.5 Explain, in FOUR steps, how you would fix a leaking copper pipe with compression joints. The water supply is already shut off. (4) Copyright reserved Please turn over

Downloaded from hlayiso.com Civil Technology: Civil Services 11 DBE/November 2018 NSC 4.6 FIGURE 4.6 below shows a fitting that can be used under a wash basin. B A C FIGURE 4.6 4.6.1 Identify the fitting in FIGURE 4.6. (1) 4.6.2 Name the material that is used to manufacture this fitting. (1) 4.6.3 Which part, A or B, will be connected to the bottom of the wash basin? (1) 4.6.4 Describe the purpose of the seal at C. (1) 4.7 FIGURE A and FIGURE B below show two different types of taps. FIGURE A FIGURE B 4.7.1 Identify the taps in FIGURES A and B respectively. (2) 4.7.2 Describe where you would use EACH of the taps above. (2) 4.7.3 Explain the advantage of plastic taps over brass taps on the outside of a building. (1) Copyright reserved Please turn over

Downloaded from hlayiso.com Civil Technology: Civil Services 12 DBE/November 2018 NSC 4.8 Explain the purpose of installing a water meter on the incoming supply pipe of a house. (1) 4.9 Materials react differently when used. 4.9.1 Describe dezincification. (2) 4.9.2 Describe the problems dezincification can cause. (3) 4.10 Recommend ONE method to remove scale or corrosion from a metal surface. (1) 4.11 One function of a centrifugal pump is to convert kinetic energy to another type of energy. Name this type of energy. (1) 4.12 Which tool would you use to clear blockages in drains? (1) 4.13 Recommend ONE tool that can be used to test for leakages in a below- ground drainage system. (1) [40] Copyright reserved Please turn over

Downloaded from hlayiso.com Civil Technology: Civil Services 13 DBE/November 2018 NSC QUESTION 5: GRAPHICS AS MEANS OF COMMUNICATION, ROOF WORK AND STORM WATER (SPECIFIC) Start this question on a NEW page. 5.1 Give ONE word(s)/term for EACH of the following descriptions by choosing a word(s)/term from the list below. Write only the word(s)/term next to the question numbers (5.1.1 to 5.1.5) in the ANSWER BOOK, e.g. 5.1.6 Vacuum breaker. length of the roof; galvanised sheet metal; gutter seal; concrete shoe; manhole; pitch of the roof; stop end; gutter; kerb 5.1.1 This fitting can be used to seal off the gutter at the ends (1) 5.1.2 One factor to consider before installing a flashing (1) 5.1.3 A material that can be used for flashings (1) 5.1.4 This part collects rainwater flowing from the roof (1) 5.1.5 A raised edge on the road that guides water to storm-water drains (1) 5.2 FIGURE 5.2 on ANSWER SHEET 5.2 shows an incomplete drawing of a roof construction. Complete the drawing of the roof by drawing the following parts: 5.2.1 Square gutter (2) 5.2.2 Down-pipe with offset (3) 5.2.3 Holderbat (2) 5.3 ANSWER SHEET 5.3 shows the front and top view of a frustrum of a cone where the top is not parallel to the base. Use the drawing and information on the ANSWER SHEET and draw the development of the cone. The development must have a 3 mm seam on both sides. Show ALL construction lines. Do NOT redraw the drawing, project the development from the given drawing. (18) [30] Copyright reserved Please turn over

Downloaded from hlayiso.com Civil Technology: Civil Services 14 DBE/November 2018 NSC QUESTION 6: SEWERAGE, SANITARY FITTINGS 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 C. 6.1.1 An inspection eye is placed at … in the drainage system. A rodding eyes B junctions C gully's D All the above-mentioned (1) 6.1.2 Glue can be used to join … pipes. A PVC B copper and PVC C copper and galvanised D copper, PVC and galvanised (1) 6.1.3 A straight pan collar is used to join the … to the discharge pipe. A toilet pan B T-junction C straight couplings D cross junction (1) 6.1.4 The … allows odours and gases to escape from the drainage system. A wastewater pipe B soil pipe C soil vent pipe D All the above-mentioned (1) 6.1.5 All branch pipes should join the main drain at an angle of … A 90° B 135° C 120° D None of the above-mentioned (1) Copyright reserved Please turn over

Downloaded from hlayiso.com Civil Technology: Civil Services 15 DBE/November 2018 NSC 6.2 FIGURE 6.2 below shows a part of a sewerage system. Study the drawing and answer the questions that follow. FIGURE 6.2 6.2.1 Identify component C. (1) 6.2.2 Describe ONE purpose of A. (1) 6.2.3 Explain why B is at an angle with the main pipe. (1) 6.3 FIGURE 6.3 on ANSWER SHEET 6.3 shows the line diagram of part of a building with sanitary fitments and sewerage components. Use ANSWER SHEET 6.3 and develop and draw a one-pipe sewerage layout for this building up to the indicated manhole. ALL regulations and design principles of a good drainage (sewerage) system must be considered and appropriate symbols and abbreviations must be used. The drainage system should consist of:  2 x rodding eyes  5 x inspection eyes  1 x ventilation pipe  Main sewerage pipes  Branch pipes (10) Copyright reserved Please turn over

Downloaded from hlayiso.com Civil Technology: Civil Services 16 DBE/November 2018 NSC 6.4 FIGURE 6.4 below shows the incomplete sectional view of a shower installation. Study FIGURE 6.4 and answer the questions that follow. FIGURE 6.4 6.4.1 What is the diameter of the water pipes that are usually used for a shower? (1) 6.4.2 Identify A. (1) 6.4.3 Why is the surface B sloped towards C? (1) 6.4.4 Describe the function of C. (1) 6.4.5 The pipework from fitting A to fitting D consists of copper pipes. Name ONE method of joining these pipes if you are unable to use a compression joint. (1) Copyright reserved Please turn over

Downloaded from hlayiso.com Civil Technology: Civil Services 17 DBE/November 2018 NSC 6.5 Explain the function of an anti-siphonage pipe. (1) 6.6 Differentiate between FIGURE A and FIGURE B below in terms of their use. FIGURE A FIGURE B (2) 6.7 Name ONE sanitary appliance that discharges soil water. (1) 6.8 Draw the SANS approved symbols for the following components: 6.8.1 Urinal (2) 6.8.2 Grease trap (2) 6.8.3 Shower (2) 6.9 Name TWO materials that are commonly used in the manufacturing of sanitary fittings. (2) 6.10 Name TWO types of solder that can be used in the building industry. (2) 6.11 Give ONE use of a chemical anchor. (1) 6.12 FIGURE 6.12 below shows a joint between two pieces of metal. Study the drawing and answer the questions that follow. A B FIGURE 6.12 6.12.1 Identify A. (1) 6.12.2 Explain the function of B. (1) [40] TOTAL: 200 Copyright reserved

Downloaded from hlayiso.com Civil Technology: Civil Services DBE/November 2018 NSC EXAMINATION NUMBER: CENTRE NUMBER: ANSWER SHEET 2 NO. QUESTIONS ANSWERS MARKS 1 Identify FIGURE A. 1 2 Identify FIGURE B. 1 3 Identify number 4. 1 4 Identify number 5. 1 5 Identify number 9. 1 6 Identify number 10. 1 7 Identify number 11. 1 8 On what date was the plan printed? 1 9 Who drew the building plan? 1 Name the feature in the column for the 10 notes in FIGURE 2 that must be 1 installed in front of the sliding door. Name the feature in the column for the 11 notes in FIGURE 2 that must give 1 access to the first floor. Identify the type of roof that is used for 12 1 the building in FIGURE A. 13 Explain the purpose of number 1. 1 14 Explain the purpose of number 2. 1 Copyright reserved

Downloaded from hlayiso.com Civil Technology: Civil Services DBE/November 2018 NSC Explain the abbreviation FFL at 15 1 number 6. 16 Explain the purpose of number 7. 1 Explain the meaning of the arrow on 17 the feature that must be installed in 1 front of the sliding door. Explain what is meant by 1 : 10 18 1 indicated on the symbol in the notes. 19 Which room will feature 15 serve? 1 Explain the short dashed lines on the 20 1 windows. Deduce the height of window 2 from 21 1 the window schedule. Deduce the width of window 3 from 22 1 the window schedule. On what elevation of the building is 23 1 the bathroom window situated? Differentiate between component 24 2 number 3 and component number 8. Differentiate between the light in the 25 2 lounge and the light in the bathroom. Recommend a suitable floor covering 26 1 for the bathroom. Recommend an appropriate scale to 27 which FIGURE A should be drawn, 1 according to SANS. Recommend an alternative sanitary 28 fitment to replace number 11 that will 1 serve a similar purpose. Copyright reserved

Downloaded from hlayiso.com Civil Technology: Civil Services DBE/November 2018 NSC Calculate the internal area of the office 29 3 in m². Show ALL calculations. Calculate the perimeter of the building. 30 7 Show ALL calculations. TOTAL 40 Copyright reserved

Downloaded from hlayiso.com Civil Technology: Civil Services DBE/November 2018 NSC CENTRE NUMBER: EXAMINATION NUMBER: ANSWER SHEET 3.2 A A ASSESSMENT CRITERIA MARK CANDIDATE'S MARK FIVE courses of bricks in stretcher 5 bond correctly drawn Alternate corner bricks on left side 3 Section correctly drawn 1 Hatching lines 1 TOTAL: 10 Copyright reserved

Downloaded from hlayiso.com Civil Technology: Civil Services DBE/November 2018 NSC CENTRE NUMBER: EXAMINATION NUMBER: ANSWER SHEET 3.6 A B C D 3.6.1 Volume of concrete for foundation: Volume = ℓ x b x h 1/ ________ ________ ________ ________ ________ m³ of concrete is needed (4) 3.6.2 Number of bricks needed for the manhole: 1/ ________ Centre line of wall = 4,96 m ________ ________ ________ ________ bricks are needed (4) Copyright reserved

Downloaded from hlayiso.com Civil Technology: Civil Services DBE/November 2018 NSC CENTRE NUMBER: EXAMINATION NUMBER: ANSWER SHEET 5.2 FIGURE 5.2 ASSESSMENT CRITERIA MARK CANDIDATE'S MARK Square gutter 2 Down-pipe with offset 3 Holderbat 2 TOTAL: 7 Copyright reserved

Downloaded from hlayiso.com Civil Technology: Civil Services DBE/November 2018 NSC CENTRE NUMBER: EXAMINATION NUMBER: ANSWER SHEET 5.3 FRONT VIEW Ø 50 ASSESSMENT CRITERIA MARK CM Construction lines to top of cone 2 Construction lines of outer circle 2 Divide outer circle in 12 parts 1 Construction lines from top of cone to outer 3 circle Cone measurement (marked/transferred) 6 from front view to determine top part of development Outside lines of development 2 3 mm seam on both sides 2 TOTAL: 18 TOP VIEW Copyright reserved

Downloaded from hlayiso.com Civil Technology: Civil Services DBE/November 2018 NSC CENTRE NUMBER: EXAMINATION NUMBER: ANSWER SHEET 6.3 MH ASSESSMENT CRITERIA MARK CANDIDATE'S MARK 2 x rodding eyes correctly positioned 2 5 x inspection eyes correctly positioned 5 1 x ventilation pipe correctly positioned 1 Drain pipes drawn correctly (main and 2 branch pipes) TOTAL 10 Copyright reserved