Civil Technology Grade 11 Eastern Cape November 2016 Memo

Downloaded from hlayiso.com NATIONAL SENIOR CERTIFICATE GRADE 11 NOVEMBER 2016 CIVIL TECHNOLOGY MEMORANDUM MARKS: 200 This memorandum consists of 12 pages.

Downloaded from hlayiso.com 2 CIVIL TECHNOLOGY (EC/NOVEMBER 2016) QUESTION 1: CONSTRUCTION PROCESSES 1.1 FIGURE 1.1 A and FIGURE 1.1 B on Sheet A show wall constructions without dampproofing. Draw on Sheet A the damp proofing underneath the floors and in the walls by means of clear lines. (8) 1.2 Any FOUR requirements to which wall constructions must comply. - Resist crushing - Insolation/Stability against rain - Insolation/Stability against heat - Insolation/Stability against cold - Insolation/Stability against noise - Insolation/Stability against fire - Contain minimum openings (Any 4 x 1) (4) 1.3 (1) Gap between wall an roof covering (2) be filled/sealed of OR Prevent wind/cold/small animals from entering the ceiling (2) 1.4 Indicate whether the following statements are TRUE or FALSE. 1.4.1 True (1) 1.4.2 True (1) 1.4.3 False (1) 1.4.4 True (1) 1.4.5 False (1) 1.5 FIGURE 1.5 1.5.1 Wall tie (1) 1.5.2 Cavity wall (1) 1.5.3 Binding wall leaves (1) 1.6 Binding roof truss parts (1) 1.7 Any FOUR general safety measures for hand tools. - Cutting tool must be sharp - Safety rules for specific tool must be applied - Use for purpose they are designed for - Tools must be complete - Do no place on edge of bench - Do not test blades with fingers - Report defects - Keep hands away from cutting surfaces (Any 4 x 1) (4) 1.8 1.8.1 Portable jig-saw (1) 1.8.2 Circular saw (1) 1.8.3 Thicknesser (1) [30] Copyright reserved Please turn over

Downloaded from hlayiso.com (EC/NOVEMBER 2016) CIVIL TECHNOLOGY 3 QUESTION 2: ADVANCED CONSTRUCTION PROCESSES 2.1 (1) Tensile force (2) Compressive force (3) Shear force. (3 x 1) (3) 2.2 FIGURE 2.2 2.2.1 Main bar/Shear bar (1) 2.2.2 Act against shear forces (1) 2.2.3 45º (1) 2.2.4 Tensile stress (1) 2.2.5 High tensile/yield steel (1) 2.2.6 16 mm (1) 2.3 (1) Tends to make column shorter/fatter, (2) to shear/bends/buckle/burst of the concrete. (2) 2.4 Any THREE erecting requirements for concrete formwork. - (1) Strong enough to (2) support loads/fresh concrete - (1) Strong enough to (2) provide adequate support/without excessive deflection - (1) Easily erected (2) and removed - (1) Be made (2) accurately - (1) Be sealed off to (2) prevent loss of concrete - (1) Clean from (2) dirt/sawdust (Any 3 x 2) (6) 2.5 Any TWO factors which determine the cover depth of steel reinforcement. - Thickness of reinforcement steel - Exposure conditions. (2 x 1) (2) 2.6 (1) Compressive stress is created inside the concrete (2) to balance/withstand tensile stress. (2) 2.7 Retaining wall with a buttress. Any FOUR labels of the retaining wall parts (12) Copyright reserved Please turn over

Downloaded from hlayiso.com 4 CIVIL TECHNOLOGY (EC/NOVEMBER 2016) 2.8 Any FOUR factors which must be considered when retaining walls are designed. - Pressure exerted by soil - Type of soil on which it must be build - Material available - Degree of sliding response - Landscape - Water filtering through. (Any 4 x 1) (4) 2.9 FIGURE 2.9 (1) Mass (2) Interlocking ability (3) Friction (3 x 1) (3) [40] QUESTION 3: CIVIL SERVICES 3.1 Drainage structure in FIGURE 3.1: FIGURE 3.1 3.1.1 Manhole/Inspection chamber (1) 3.1.2 Any TWO purposes of the structure in a drain system. - Checking drainage system - Cleaning drainage system - Where two or more drain lines are joining. (Any 2 x 1) (2) 3.1.3 (1) Depth and (2) size of system. (2 x 1) (2) 3.2 (1) Mirror is fixed at one end (2) and a torch is shined from the other end (2) 3.3 Any TWO test methods to test the closeness of drains. - Hydraulic test - Air test - Smoke test (Any 2 x 1) (2) Copyright reserved Please turn over

Downloaded from hlayiso.com (EC/NOVEMBER 2016) CIVIL TECHNOLOGY 5 3.4 FIGURE 3.4 3.4.1 Inspection eye (1) 3.4.2 50 mm (1) 3.4.3 Holderbat (1) 3.4.4 135º (1) 3.4.5 Gully (1) 3.4.6 P-trap (1) 3.4.7 (1) Avoid odours (2) returning from the drain system (2) 3.5 3.5.1 False (1) 3.5.2 True (1) 3.5.3 False (1) 3.5.4 False (1) 3.5.5 False (1) 3.5.6 True (1) 3.5.7 True (1) 3.5.8 True (1) 3.6 Any THREE advantages of the kick pipe in an electrical system. - Safer - Open cable cannot be seen - Cable not exposed to weather - Less exposed to damage - Looks tidier (Any 3 x 1) (3) 3.7 1 500 mm (1) 3.8 Building contractor (1) [30] Copyright reserved Please turn over

Downloaded from hlayiso.com 6 CIVIL TECHNOLOGY (EC/NOVEMBER 2016) QUESTION 4: MATERIALS AND QUANTITIES 4.1 (1) Two pieces of glass are (2) joined together by a poly-vinyl interlayer that is bonded under (3) heat and (4) pressure. (4) 4.2 Any THREE properties of stainless steel. - Resistance to corrosion - Very strong - High aesthetical appearance - Durable - Hygienic (Any 3 x 1) (3) 4.3 Any FOUR properties of aluminium. - Light - Ductile - Malleable - Resistant to corrosion - Easy workable - Conduct heat/electricity (Any 4 x 1) (4) 4.4 (1) Threaded joints (2) Flange joint (2 x 1) (2) 4.5 CORRUGATED CLADDING FIGURE 4.5 4.5.1 Part 4.5 A– Hook bolt Part 4.5 B – Angle iron (2) 4.5.2 Too thin material (1) can lead to elastic deformation or (2) creep/gradual compression (2) 4.5.3 Any THREE advantages of the use of steel cladding. - Variety of shapes - Variety of sizes - Prepared beforehand - In controlled environment prepared - Light in weight - Can be cut into any size (Any 3 x 1) (3) 4.5.4 (1) Cladding expand and contract (2) in consequence of heat or cold. (2) Copyright reserved Please turn over

Downloaded from hlayiso.com (EC/NOVEMBER 2016) CIVIL TECHNOLOGY 7 4.6 FIGURE 4.6 Determine the centre line of the strip foundation in FIGURE 4.6. 11 000 x 2 + 5 000 x 2 32 000 - 600 x 4 29 600 (8) [30] QUESTION 5: APPLIED MECHANICS 5.1 FIGURE 5.1 on Sheet B shows a frame structure with pointed loads. Complete the following on Sheet B: 5.1.1 The force diagram on scale 1 N = 2 mm (7) 5.1.2 The table by indicating the size and nature of the forces in the parts (9) 5.2 FIGURE 5.2 shows a beam with point loads. Use the information on Sheet C and calculate on Sheet C the shear force values from point a to c and draw the shear force diagram on scale 1 mm = 1 N. FIGURE 5.2 (9) Copyright reserved Please turn over

Downloaded from hlayiso.com 8 CIVIL TECHNOLOGY (EC/NOVEMBER 2016) 5.3 FIGURE 5.3 shows a beam with point loads. Calculate the reaction force of Support B. FIGURE 5.3 Om A LOM = ROM (Bx6) = (140x2)+(100x6)+(40x8) B6 = 280+600+320 B = 1200 6 = 200 N (5) [30] QUESTION 6: GRAPHICS AND COMMUNICATION 6.1 6.1.1 Outer door at D1 (2) 6.1.2 Window at W1 (2) 6.1.3 Inner door at D2 (1) 6.1.4 Water closet at WC (2) 6.1.5 Shower at SH (2) 6.1.6 Sink at S (2) 6.1.7 Stove at STV (2) 6.1.8 Light switch at the outer door (2) 6.1.9 Single fluorescent light in the middle of the living area (2) 6.1.10 Joining line between the light switch and the fluorescent light (1) 6.1.11 Complete measurements for the West elevation (12) 6.2 Make neat sketches to illustrate each of the following symbols: 6.2.1 Concrete (2) 6.2.2 Hardcore filling (2) 6.2.3 Power point (2) 6.2.4 Distribution board (2) 6.2.5 Vent pipe (2) [40] TOTAL: 200 Copyright reserved Please turn over

Downloaded from hlayiso.com (EC/NOVEMBER 2016) CIVIL TECHNOLOGY 9 ANSWER SHEET CIVIL TECHNOLOGY NAME: ANTWOORDBLAD A SIVIELE TEGNOLOGIE NAAM: QUESTION/VRAAG 1.1 A (3) QUESTION/VRAAG 1.1 B (5) Copyright reserved Please turn over

Downloaded from hlayiso.com 10 CIVIL TECHNOLOGY (EC/NOVEMBER 2016) ANSWER SHEET CIVIL TECHNOLOGY NAME: ANTWOORDBLAD B SIVIELE TEGNOLOGIE NAAM: QUESTION/VRAAG 5.1 (16) a h b i e f c SKAAL / SCALE: 1 N = 2 mm g DEEL/PART STUT/STRUT STANG/TIE AF 59 N BG 40 N CH 40 N d DI 59 N EI 51 N EF 51 N FG 20 N GH 20 N HI 20 N Copyright reserved Please turn over

Downloaded from hlayiso.com (EC/NOVEMBER 2016) CIVIL TECHNOLOGY 11 ANSWER SHEET CIVIL TECHNOLOGY NAME: ANTWOORDBLAD C SIVIELE TEGNOLOGIE NAAM: QUESTION/VRAAG 5.2 (9) Skuifkragwaardes/Shearforce values a = 95 N – 20 N = 75 N b = 75 N – 120 N = -45 N c = -45 N – 40 N + 85 N = 0 Skuifkragdiagram/Shearforce diagram Skaal/Scale: 1 mm = 1 N Copyright reserved Please turn over

Downloaded from hlayiso.com 12 CIVIL TECHNOLOGY (EC/NOVEMBER 2016) ANTWOORDBLAD SIVIELE TEGNOLOGIE NAAM: ANSWER SHEET D CIVIL TECHNOLOGY NAME: QUESTION/VRAAG 6.1 (30) FLOORPLAN Outer door 2 Window 2 Inner door 1 Water closet 2 Shower 2 Sink 2 Stove 2 Measurements 12 Light switch and light 5 TOTAL 30 Copyright reserved Please turn over