Civil Technology Nov 2020 (Construction) Eng_hlayiso.com_.pdf

Down From hlayiso.com >“ ¥ —“¥ \¢ Department: () Basic Education LSA REPUBLIC OF SOUTH AFRICA SENIOR CERTIFICATE/ NATIONAL SENIOR CERTIFICATE basic education SSS SPSS SSSR SSSR SSSR SSS SRS SSSR SSS SESE SERS SEES « CIVIL TECHNOLOGY: CONSTRUCTION i i Ll a NOVEMBER 2020 ‘ Mg ee MARKS: 200 TIME: 3 hours This question paper consists of 12 pages and 8 answer sheets. Please turn over Copyright reserved

Downloaded from hlayiso.com Civil Technology: Construction 2 DBE/November 2020 SC/NSC REQUIREMENTS: 1. Drawing instruments 2. A non-programmable calculator 3. ANSWER BOOK INSTRUCTIONS AND INFORMATION 1. This question paper consists of SIX questions. Answer ALL the questions. Read all questions carefully. Re KN Answer each question as a whole. Do NOT separate subsections of questions. a Number the answers correctly according to the numbering system used in this question paper. Start the answer to EACH question on a NEW page. Do NOT write in the margins of the ANSWER BOOK. You may use sketches to illustrate your answers. oo nN fo 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 mm x 75 mm. 13. Use your own discretion where dimensions and/or details have been omitted. 14, Answer QUESTIONS 2, 3.6, 3.7, 4.15, 5.6, 5.7, 6.5 and 6.6 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. Copyright reserved Please turn over

Downloaded from hlayiso.com Civil Technology: Construction 3 DBE/November 2020 SC/NSC 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. COLUMN A COLUMN B 1.1.1 Powder coating A must be inclined slightly towards a building 1.1.2 Rungs B __ is used with the dumpy level to 1.1.3. Wing nut measure heights accurately 1.1.4 Rawl bolts C allows a worker to climb up or down a ladder 1.1.5 Telescopic staff D can be tightened or loosened without 1.1.6 Accident using a spanner 1.1.7 Putlog scaffold E _ suitable for outdoor furniture 1.1.8 Building rubble F result of an unsafe act or unsafe condition G must not be placed where it may obstruct the access to or the exit from a building site H_ resists pull-out failure I must be secured firmly when there is any sagging J prevent(s) workers from falling off a scaffold K disposal of waste materials and debris (8 x 1) 1.2 Explain ONE advantage of galvanising. 1.3 Name the document on hazardous chemical substances which the OHS Act requires employers to provide to interested or affected persons. 1.4 Describe TWO methods that can be used to move building material around the site. Copyright reserved Please turn over (8) (1) (1) (2)

Downloaded from hlayiso.com Civil Technology: Construction 4 DBE/November 2020 SC/NSC 1.5 State TWO specific advantages of water-based paint. 1.6 You were tasked to locate steel bars and copper pipes placed in a wall. 1.6.1 Name the tool you would use to detect these materials. 1.6.2 Describe how you would take care of this tool after using it. 1.7 FIGURE 1.7 below shows a joining fixture that is commonly used. 2 a FIGURE 1.7 Explain how this joining fixture can be used to secure a bracket to a wall. 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. Copyright reserved Please turn over (1) (2) (3) [20]

Downloaded from hlayiso.com Civil Technology: Construction 5 DBE/November 2020 SC/NSC NOTES: Contractors must verify ali dimensions and levels on site before commencing work. Architects must be notified of any discrepancies immediately. 7 ARCHITECT'S SIGNATURE CLIENT'S SIGNATURE .. Brick force must be installed every third course up to window height. From the top of the window, brick force must be installed between every course up to wall plate height. DPM must be fitted under the floor slab to prevent water from penetrating from the substructure. The foliowing electrical fittings must be installed in the kitchen: FIGURE A 2x40W SCALE 1: 100 REVISION DATE | DESCRIPTION PRINTED BY: DATE OF PRINT: 2.500 — 2000 {p40 + MTANDO PRINTERS —_ 01/04/2020 2 Q| 220 110 yy 110 yy g . i) DRAWING TITLE: v1 A nN il Y Wi W2 W2 _W1, e SITE PLAN STAND 101 : =I —I —————} 2 i BATHROOM || TOILET | PROJECT: BEDROOM 1 BEDROOM 2 a PROPOSED DWELLING ON STAND 101, | 3 JABULANI STREET, CRADOCK 5 ; PROJECT NO. DRAWING NO. a f= | GR 448-210 559P7 c=) &. = 3 DATE | DRAWN | CHECKED |SCALE \ = 27/03/2020 | N DAMON} P HENSLO | 1 : 100 . | | = 2 REFERENCE CODE | ® = ‘QP 4-2020 -|| | g WINDOW 1 WINDOW 2 ea 1x40W LOUNGE a KITCHEN Ti 1600 > | | SS 800. ; \ —— K k FIGURE B “1 - = SCALE 1 : 100 FIGURE 2 [40] Copyright reserved Please turn over

Civil Technology: Construction 6 DBE/November 2020 Downloaded from hlayiso.com SC/NSC QUESTION 3: ROOFS, STAIRCASES AND JOINING (SPECIFIC) Start this question on a NEW page. 3.1 3.2 3.3 3.4 3.5 3.6 3.7 Copyright reserved 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. 3.1.6 114 mm x 38 mm. 760 mm; _fire-proof material; corrugated iron sheets; 300 mm; 38x 38mm; sisalation; 1200 mm; fibre-cement tiles; 450 mm; concrete and clay roof tiles; bitumen asphalt; 50 x 76mm 3.1.1 The maximum spacing between roof trusses for a thatch roof 3.1.2 The material that can be used as an underlay to reduce the fire hazard during the construction of a thatch roof 3.1.3 The maximum spacing between the battens for a thatch roof 3.1.4 The type of roof covering if the maximum space between the roof trusses is 760 mm 3.1.5 The dimensions of a batten that is used in an eaves construction for corrugated iron sheet covering State ONE principle to consider when designing a staircase in terms of the following: 3.2.1 Minimum width of the staircase 3.2.2 Minimum headspace 3.2.3 Safety Differentiate between a rise and riser as used in a staircase. Name the template that is used to set out a staircase. State any TWO purposes of a balustrade. Use ANSWER SHEET 3.6 and draw a neat freehand sketch, in good proportion, to show how a roof truss is joined to a wall. Use the assessment criteria on the ANSWER SHEET as a guide. Use ANSWER SHEET 3.7 and draw to scale of 1 : 10 the junction between the tie beam, king post and struts of a gang-nailed South African (Howe) roof truss. The angle between the struts and the tie beam is 30°. Label any TWO parts with the dimensions and print the title and scale below the drawing. Use the assessment criteria on the ANSWER SHEET as a guide. Please turn over (1) (1) (1) (1) (1) (1) (1) (2) (1) (2) (9) (8) [30]

Downloaded from hlayiso.com Civil Technology: Construction 7 DBE/November 2020 SC/NSC QUESTION 4: EXCAVATIONS, FORMWORK, TOOLS, EQUIPMENT AND MATERIALS (SPECIFIC) Start this question on a NEW page. 4.1 4.2 4.3 44 4.5 46 47 Define the term excavations. Describe the consequence if heavy vehicles drive close to the edge of an excavation. Predict what will happen if the sides of an excavation are not dug at the correct angle. At which part of the formwork will you start when dismantling formwork in excavations? What precautions must be taken around a trench that is deeper than 2 metres? Excavation of loose soil is necessary on a building site to reach a firm soil base. 4.6.1 The location of different types of services should be determined before excavation commences. Name any TWO of these services. 4.6.2 The trenches should be inspected regularly when working in deep trenches. Explain when these inspections should take place. FIGURE 4.7 below shows a tamping rammer that is used on a building site. ~ FIGURE 4.7, 47.1 Describe how one should operate the tamping rammer safely. 4.7.2 Why should this machine be stored in a safe, dry place? Copyright reserved Please turn over (1) (1) (1) (1) (1) (2) (1) (2) (4)

Downloaded from hlayiso.com Civil Technology: Construction 8 DBE/November 2020 SC/NSC 48 FIGURE 4.8 below shows equipment that is used to test concrete on a 49 4.10 4.11 4.12 4.13 4.14 4.15 construction site. Study FIGURE 4.8 below and answer the questions that follow. ~ FIGURE 4.8 4.8.1 Name the test used in FIGURE 4.8. 4.8.2 Identify A and B. 4.8.3 Indicate the time needed before testing can take place, after the concrete has been immersed in water. 4.8.4 Which property of concrete is tested during this process? State TWO properties of ductile cast iron. . Name ONE material that can be used to fix cladding to a wall. Describe the function of poling boards as used in shuttering for excavations. Explain TWO functions of walling boards that are used in shuttering for excavations. How many walling boards must be used for an excavation that is 1 metre deep? Describe the spacing of poling boards for shuttering in firm soil and shuttering in loose soil respectively. FIGURE 4.15 on ANSWER SHEET 4.15 shows an incomplete drawing of the formwork for a straight flight of concrete stairs with a landing. Use ANSWER SHEET 4.15 and complete the drawing. Use the assessment criteria on the ANSWER SHEET as a guide. Copyright reserved Please turn over (1) (2) (2) (1) (2) (1) (1) (2) (1) (2) (14) [40]

Civil Technology: Construction 9 DBE/November 2020 Downloaded from hlayiso.com SC/NSC QUESTION 5: PLASTER AND SCREED, BRICKWORK AND GRAPHICS AS MEANS OF COMMUNICATION (SPECIFIC) Start this question on a NEW page. 5.1 5.2 5.3 5.4 5.5 5.6 5.7 Copyright reserved Classify the type of finish that can be obtained by using the following: 5.1.1 A Tyrolene machine 5.1.2 Hessian cloth or cement bag State TWO purposes of screed. Explain ONE method of preparing a smooth concrete floor to receive the screed. Identify the material that can be added to plaster to increase its workability and plasticity. Differentiate between a rough arch and a gauged arch in terms of the respective shapes of the mortar joints. Use ANSWER SHEET 5.6 and draw a neat sketch showing the alternate plan courses of a one-and-a-half brick pier built in stretcher bond. Use the assessment criteria on the ANSWER SHEET as a guide. Use ANSWER SHEET 5.7 and draw to scale 1 : 10 a horizontal sectional view through a wooden door frame built into a 220 mm wall. Use the assessment criteria on the ANSWER SHEET as a guide. Please turn over (1) (1) (2) (1) (1) (2) (10) (12) [30]

Downloaded from hlayiso.com Civil Technology: Construction 10 DBE/November 2020 SC/NSC QUESTION 6: REINFORCEMENT IN CONCRETE, FOUNDATIONS, CONCRETE FLOORS AND QUANTITIES (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 6.1.3 6.1.4 6.1.5 Steel that is used as reinforcement in concrete is available in the following thicknesses: A 8mm, 25 mm and 40 mm B 5mm, 7mm and 13mm C 9mm, 18 mm and 28 mm D 14mm, 26 mm and 35 mm Reinforcement rods and bars are available in lengths of up to ... A 3000mm. B 6000 mm. C 13000 mm. D 15000 mm. Spacers are used to prevent the reinforcement from ... bending and buckling. touching the sides of the formwork. twisting. All the above-mentioned 0DOWUPY ... Can be used as bars and rods for reinforcement. A Square twisted bars B_ Round bars C_ Ribbed bars D_ All the above-mentioned The purpose of minimum concrete cover is to ensure ... adequate bonding between the steel and concrete. adequate protection of steel in the event of a fire. protection of steel against corrosion. All the above-mentioned voor 6.2 Give TWO reasons for the installation of pile foundations. Copyright reserved Please turn over (1) (1) (1) (1) (1) (2)

Downloaded from hlayiso.com Civil Technology: Construction 11 DBE/November 2020 SC/NSC 6.3 Draw a neat freehand sketch in your ANSWER BOOK showing the first step of the installation of a driven in-situ pile. Show the following in the drawing: Steel cable Steel pipe-casing Drop hammer Any ONE label 6.4 FIGURE 6.4 below shows a faulty installation of a rib and block floor construction. Analyse FIGURE 6.4 and answer the questions that follow. 4a--b-4 cee REE Fyfe FIGURE 6.4 6.4.1 Predict TWO consequences of installing the rib and block floor as shown. 6.4.2 Draw a neat freehand drawing in your ANSWER BOOK and rectify the faults in FIGURE 6.4. 6.4.3 What is the minimum recommended width of the load-bearing walls that support this type of floor construction? 6.5 Use ANSWER SHEET 6.5 and draw a neat sectional view of a round reinforced concrete column with eight main bars in good proportion. Use the assessment criteria on the ANSWER SHEET as a guide. Copyright reserved Please turn over (5) (2) (6) (1) (7)

Downloaded from hlayiso.com Civil Technology: Construction 12 DBE/November 2020 SC/NSC 6.6 FIGURE 6.6 below shows the floor plan of a storeroom in a construction workshop. Study the floor plan and answer the questions that follow. 6 500 f=) fos) Ww) x FIGURE 6.6 Use the following specifications: Outside measurements of the storeroom: 6 500 mm x 4 500 mm Size of the window opening: 2 500 mm x 600 mm Size of the door opening: 2 100 mm x 900 mm Concrete floor: 75 mm thick Walls: 220 mm wide Tiles: 350 mm x 350 mm eee0ee3ee Use the dimension paper on ANSWER SHEET 6.6 and calculate the following: 6.6.1 The area of the floor 6.6.2 The volume of concrete needed for the floor. Round off your answer to TWO decimal places. 6.6.3 The number of tiles needed TOTAL: Copyright reserved (5) (2) (5) [40] 200

Downloaded from hlayiso.com Civil Technology: Construction DBE/November 2020 SC/NSC | CENTRE NUMBER: L[ [ [| [ J [EXAMINATIONNUMBER: | | | | | | LT TT 7] ANSWER SHEET 2 NO. QUESTION ANSWER MARKS 1 Identify the elevation in FIGURE A. 1 2 Describe the type of house that is indicated in FIGURE A. 1 3 Identify number 1. 1 4 Identify number 3. 1 5 Identify number 4. 1 6 Identify the fastener indicated by 1 number 5. 7 Identify number 6. 1 8 Identify number 7. 1 9 Identify number 8. 1 10 What does DPM stand for, as 1 indicated in the notes? 11 Identify number 10. 4 Recommend a suitable material that 12 can be used for the manufacturing of 1 number 2 in FIGURE A. 13 Name the TWO elevations on which 2 number 2 is installed. 14 Describe the purpose of number 3. 1 Deduce ONE feature that has been 15 omitted from the elevation in 1 FIGURE A. Recommend any TWO sanitary 16 fitments carrying waste-water, other 2 than a bath, that can be installed in the room indicated by number 11. Copyright reserved

Downloaded from hlayiso.com Civil Technology: Construction DBE/November 2020 SC/NSC What sanitary fixture carrying soil 17 water can be installed in the room indicated by number 12? Describe the error that appears at 18 number 6 in the elevation in FIGURE A. 19 State the reference code for this plan. 20 Which room will number 13 serve? 21 | What does the line between numbers 13 and 14 represent? Differentiate between number 15 in 22 FIGURE B and number 17 in the notes. Explain the installation of brick force 23 from the top of the window to the wall plate, as indicated by the architect. Recommend a possible finish for the 24 outside walls of the house. Deduce from FIGURE 2 which eS elevation does NOT have windows. 26 Deduce the thickness of the external wall from FIGURE 2. 27 Name a material that can be used to close the open sides of number 16. 28 Name the town in which the proposed dwelling will be build. Calculate the area of the bathroom. 29 Show ALL calculations. Give your answer in m?. Calculate the total length of the wall on the eastern side of the building. Show ALL calculations. The length must be indicated in metres. 30 TOTAL: Copyright reserved

Downloaded from hlayiso.com Civil Technology: Construction SC/NSC | CENTRE NUMBER: I [| DBE/November 2020 [EXAMINATION NUMBER: | ANSWER SHEET 3.6 ASSESSMENT CRITERIA MARK CANDIDATES MARK Brick wall Wall plate Tie beam Rafter Hoop-iron strap Clout nails Correctness of drawing TOTAL: wl) a)o}a)/a)/a)/ a Copyright reserved

Downloaded from hlayiso.com Civil Technology: Construction DBE/November 2020 SCINSC [CENTRENUMBER: | | | | | | | | | [EXAMINATIONNUMBER: | | | | | | | | | | | | |_| ANSWER SHEET 3.7 ASSESSMENT CRITERIA MARK | CANDIDATE'S MARK Tie beam King post Struts Any ONE label with dimensions | Application of scale Correctness of drawing TOTAL: eo} /—/ro/ro} a} oa Copyright reserved

Downloaded from hlayiso.com Civil Technology: Construction SC/NSC DBE/November 2020 | CENTRE NUMBER: L_] [EXAMINATION NUMBER: |__| ANSWER SHEET 4.15 SHUTTER BOARD WALL 220mm —__, LANDING | Uy D™D?DM'MY«Y(UWé«éi GG FIGURE 4.15 \ SOLE PLATE ASSESSMENT CRITERIA MARK CANDIDATE'S MARK Cross bearers Bearer/Joist | Props Folding wedges Cleats to support props Wall string | Bevelied riser Cleats Correctness of drawing TOTAL: Rlaly|y)s|sinjo|a/s Copyright reserved

Downloaded from hlayiso.com Civil Technology: Construction DBE/November 2020 SC/NSC | CENTRE NUMBER: LTT TT TT yt [EXAMINATION NUMBER: | | | | LTT? Tf, {Ty i ANSWER SHEET 5.6 ASSESSMENT CRITERIA MARK | CANDIDATE'S MARK | Strecher bond — first course 5 Strecher bond — second course iS} TOTAL: 10 Copyright reserved

Downloaded from hlayiso.com Civil Technology: Construction SC/NSC | CENTRE NUMBER: [| TT TT TT DBE/November 2020 [EXAMINATIONNUMBER: | | | | | | | | J ANSWER SHEET 5.7 ASSESSMENT CRITERIA MARK | CANDIDATE'S MARK Wall 220 mm Plaster 12 mm Exterior reveal Door frame 110 mm x 70 mm DPC attached to door frame Quarter rounds Any ONE label Correctness of drawing TOTAL: plAlaiNy|siyl}aiyiny Copyright reserved

Downloaded from hlayiso.com Civil Technology: Construction DBE/November 2020 SC/NSC [CENTRE NUMBER: _ TTT TTT Ty i [EXAMINATIONNUMBER: | | | | | LT] [T |] 7 [TT J ANSWER SHEET 6.5 ASSESSMENT CRITERIA MAR CANDIDATE'S MARK Column Stirrup Main bars Cover depth indicated (min concrete cover) Correctness of drawing aly|alyl x S = TOTAL: | 7 (7) Copyright reserved

Downloaded from hlayiso.com Civil Technology: Construction DBE/November 2020 SC/NSC | CENTRE NUMBER: JT [TTT {TT 7 TJ [EXAMINATIONNUMBER: | | | | | | | | | | | [| | J ANSWER SHEET 6.6 A B c D (12) Copyright reserved