Engineering Practice Exam for Structural Engineering Students - Summer 2007, Exams of Engineering Drawing and Graphics

Download Engineering Practice Exam for Structural Engineering Students - Summer 2007 and more Exams Engineering Drawing and Graphics in PDF only on Docsity! Cork Institute of Technology Bachelor of Engineering (Honours) in Structural Engineering- Stage 3 (NFQ Level 8) Summer 2007 Engineering Practice (Time: 3.5 Hours) Instructions Answer ALL questions In Section A. Answer ONE question from Section B, and TWO questions from Section C. Use separate answer books for each section Examiners: Mr. A. M. Conway Mr. F. Delaney Mr. A. Mac Ilwraith Mr. P. Anthony Prof. P. O’Donoghue Section A – Answer all questions QA1.(a) The attached drawing shows a structural steel frame. The drawing details one bay of the construction but represents ten bays. You are required to measure quantities using the civil engineering standard method of measurement (CESSM3) for: (i) Columns and their base plates and connections. (9 marks) (ii) Beams and their connections. (9 marks) (iii) Holding down bolt assemblies. (7 marks) The relevant parts of CESMM3 are attached. QA2. Answer the following questions relating to the I.E.I conditions of contract. (a) Discuss the granting of an extension of time by the engineer to a contractor. (5 marks) (b) Discuss how “Dayworks” are used in a construction project. (4 marks) (c) Define what is meant by the following terms: (i) Retention (2 marks) (ii) Interim certificate (2 marks) (iii) Nominated sub-contractor (2 marks) 2 Section B: FIRE ANSWER 1 QUESTION FROM THIS SECTION (20 MARKS) Question B1. (a) The brick clad building shown in figure B1, is currently being designed for industrial use. All windows and doors are initially to be standard non-fire resisting elements. Using the enclosing rectangle method and Table B1 below, calculate the required boundary separation distances, and examine the adequacy of the available separation distances to the boundary fence. (14 Marks) (b) If the separation distance to the boundary fence is inadequate, provide calculated solutions to ensure adequate boundary separation, while keeping the existing boundary location. (6 Marks) Table 1 (continued) Width of Distance from relevant boundary for unprotected percentage not exceeding enclosing "29% 30% 40% 50% 60% 70% 80% 90% 100% rectangle (m) Minimum boundary distance (m) Figures in brackets are for Residential, Office and Assembly/recreation uses Enclosing rectangle 21m high 3 2.0 (1.0) 3.0 (1.5) 3.5 (20) 45 (25) 5.0 (3.0) 55 (3.0) 60 (35) 6.5 7.0 (4.5) 6 35 (15) 5.0 (25) 6.0 (3.5) 7.0 (4.0) 8.0 (5.0) 9.0 (5.5) 9.5 (6.0) 10.0 10.5 (7.0) 9 45 (2.0) 65 (35) 75 (45) 9.0 (5.5) 10.0 (6.5) 11.0 (7.0) 120 (7.5) 13.0 13.5. (9.0) 12 (25) 75 (40) 9.0 (5.5) 105 (65) 120 (75) 13.0 (85) 14.0 (9.0) 15.0 (10.0) 16.0 (10.5) 15 835 (5.0) 105 (65) 120 (75) 135 (85) 143 (95) 16.0 (10.5) 165 (11.0) 17.5 (12.0) 18 95 (55) 11S (7.0) 130 (80) 145 (9.5) 16.0 (10.5) 17.0 (11.5) 18.0 (123) 19.3 (13.0) 2 78 10.0 (6.0) 125 (75) 140 (9.0) (10.0) 170 (11.0) 18.5 (125) 20.0 (13.5) 21.0 (740) 4 80 10.5 (6.0) 13.0 (8.0) 15.0 (9.5) (10.5) 18.0 (12.0) 20.0 (13.0) 21.0 (14.0) 22.0 (15.0) 27 85 115 (65) 140 (85) 16.0 (10.0) 18.0 (11.5) 19.0 (13.0) 21.0 (14.0) 22.5 (15.0) (16.0) 30 9.0 (40) 12.0 (7.0) 145 (9.0) 165 (105) 185 (12.0) 20.5 (13.0) 22.0 (14.5) 235 (16.0) 25.0 (16.5) 40 10.0 (4.5) 135 (75) 16.5 (10.0) 19.0 (12.0) 21.5 (13.5) 23.0 (15.0) 25.5 (16.5) 27.0 (18.0) 285 (19.0) 30 11.0 (45) 14.5 (8.0) 18.0 (11.0) 21.0 (13.0) 235 (14.5) 25.5 (16.5) 28.0 (18.0) 30.0 (20.0) 31.5 (21.0) 60 1S (45) 155 (85) 19.5 (115) 225 (13.5) (15.5) (175) 30.5 (195) 325 (21.0) 335 (22.5) 80 12.0 (43) 17.0 (85) 21.0 (12.0) 25.0 (14.5) (17.0) 5 (19.0) 34.0 (21.0) 36.5 (23.5) 100 120 (45) 180 (9.0) 225 (12.0) 27.0 (15.5) (18.0) 345 (205) 37.0 (22.5) 40.0 (25.0) 120 12.0 (45) 185 (9.0) 235 (120) 285 (16.0) (85) 365 (21.5) 395 (235) 43.0 (26.5) 45.5 (285) no limit 12.0 (4.5) 19.0 (9.0) 25.0 (12.0) 29.5 (16.0) (19.0) 38.0 (22.0) 41.5 (25.0) 455 (26.5) 48.0 (29.5) Enclosing rectangle 24m high 3 (1.0) 3.0 (15) 3.5 (2.0) 45 (25) (3.0) 60 35) 7.0 (40) 75 (45) 6 (13) 5.0 (25) 6.0 (35) 7.0 (45) 85 (5.0) 10.0 (6.0) 105 (7.0) 11.0 (7.0) 9 (20) 65 (35) 80 (5.0) 95 (55) 110 (6.5) 13.0 (80) 135 (9.0) 145 (9.5) 12 60 (25) 80 (45) 95 (6.0) 11S (7.0) 125 (80) 140 (85) 150 (5) 16.0 (10.5) 165 (11.5) 15 65 3.0) 9.0 (5.0) 110 (65) 13.0 (8.0) 145 (9.0) 153 (10.0) 17.0 (11.0) 18.0 (12.0) 19.0 (13.0) 18. 75 (3.0) 10.0 (5.5) 12.0 (7.5) 14.0 (85) 15.5 (10.0) 16.5 (11.0) 18.5 (12.0) 19.5 (13.0) 20.5 (14.0) 2 8.0 (35) 105 (6.0) 13.0 (80) 15.0 (95) 165 (105) 180 (12.0) 20.0 (13.0) -—-21.0,(14.0) 22.0 (15.0) 24 85 (35) 115 (6.5) 140 (85) 16.0 (70.0) 18.0 (11.5) 195 (125) 21.0 (140) 22.5 (15.0) 24.0 (16.0) 2 9.0 (4.0) 12.5 (7.0) 15.0 (9.0) 17.0 (11.0) 19.0 (12.5) 20.5 (13.5) 22.5 (15.0) —24.0.(16.0) 25.5 (17.0) 30 935 (40) 130 (75) 155 (95) (13.0) 25 (14.0) 23.5 (155) 25.0(17.0) 26.5 (18.0) 40 110 (45) 145 (85) 18.0 (11.0) (143) 25.0 (16.0) 275 (180) 29.0 (19.0) 305 (205) 50, 120 (5.0) 16.0 (90) 195 (12.0) 5 (16.0) 275 (17.5) 30.0 (19.5) 32.0 (21.0) 33.5 (22.5) 60 (5.0) 17.0 (95) 21.0 (12.5) 24.5 (15.0) 27.5 (17.0) 30.0 (19.0) 325 (21.0) 35.0 (23.0) 36.5 (245) 80 3.5. (5.0) 185 (10.0) 235 (13.5) 275 (165) 31.0 (185) 34.5 (21.0) 37.0 (235) 395 (255) 41.5 (275) 100 13.5 (5.0) 20.0 (10.0) 25.0 (13.5) 295 (17.0) 33.5 (20.0) 37.0 (22.5) 40.0 (25.0) 43.0 (27.5) 45.5 (29.5) 120 (35) 205 (10.0) 265 (135) 31.0 (17.5) 36.0 (20.5) 395 (235) 43.0 (26.5) 46.5 (29.0) 49.0 (31.0) nolimit 13.5 (5.5) 21.0 (10.0) 27.5 (13.5) 32.5 (18.0) 375 (21.0) 42.0 (240) 45.5 (275) 49.5 (30.0) 52.0 (32.5) Enclosing rectangle 27m high 3 2.0 (1.0) 3.0 (1.5) 4.0 (2.0) (2.35) 3.5 (3.0) 60 (35) 6S (4.0) 7.0 (40) 75 (4.5) 6 35 (15) 5.0 (25) 6.5. (3.5) (45) 5 (5.0) 95 (6.0) 105 (6.5) 11.0. (7.0) (7.5) 9 5.0 (2.0) 7.0 (35) 85 (5.0) (6.0) NS (7.0) 125 (75) 135 (85) 14.5 (9.5) (10.0) 12 6.0 (2.5) 8.0 (45) 10.5 (6.0) 12.0 (7.0) 135 (80) (9.0) 16.0 (10.5) 17.0 (11.0) 17.5 (12.0) 15 70 (3.0) 95 (55) 1S (7.0) 135 (85) 15.0 (9.5) 5 (10.5) 18.0 (11.5) 19.0 (12.5) 20.0 (13.5) 18 8.0 10.5 (6.0) 12.5 (8.0) 145 (9.0) 16.5 (105) 17.5 (11.5) 195 (125) 20.5 (13.5) 21.5 (14.5) 2 85 (3.5) ILS (6.5) 14.0 (8.5) 16.0 (10.0) 18.0 (11.5) (13.0) 21.0 (14.0) 22.5 (15.0) 23.5 (16.0) 24 9.0 (35) 12.5 (7.0) 15.0 (9.0) 17.0, (11.0) 19.0 (12.5) (13.5) 22.5 (15.0) (16.0) (17.0) 27 10.0 (4.0) 13.0 (7.5) 16.0 (10.0) 18.0 (11.5) 20.0 (13.0) (14.0) 24.0 (16.0) (17.0) 27.0, (18.0) 30 10.0. (4.0) (8.0) 17.0 (10.0) 19.0 (12.0) 21.0 (13 (15.0) 25.0 (17.0) 26.5 (18.0) 28.0 (19.0) 40, ILS (5.0) (9.0) 19.0 (11.5) 22.0 (14.0) 24.5 (15.5) (17.5) 29.0 (19.0) (22.0) 50 125. (5.5) (9.5) 21.0 (12.5) 24,0 (15.0) 27.0 (17.0) 5 (19.0) 32.0 (21.0) 36.0 (24.0) 60, 185 (10.5) 22.5 (, 26.5 (16.0) (8.5) (205) 35.0 (22.5) 39.0: (26.5) 80 25.0 (14.5) 29.5 (17.5) (20.5) (22.5) 39.5 (25.0) 44.0 (29.5) 100, 215 (11.0) 27.0 (15.5) 32.0 (19.0) 5 (21.5) (245) 43.0 (27.0) 48.5 (32.0) 120 22.5 (11.5) 28.5 (15.5) 34.0 (19.5) 39.0 (22.5) 43.0 (26.0) 46.5 (285) 50.5 (32.0) $3.0 (34.0) no limit 2. 35.0 (20.0) 40.5 44.5 (27.0) 52.0 (3 (35.0) 6 Question B2. (a) A proposed single storey computer manufacturing facility, with plan dimensions of 40m by 40m, is to have a life safety sprinkler system installed. The overhead sprinkler system is 8m above the control gauge, which is 1m above the ground floor level. As this building is in the Ordinary Purpose Group III category, then the minimum design density can be taken as 5mm/m2/min, and the assumed maximum area of operation taken as 216m2. 32mm diameter range pipes, and 100mm diameter distribution pipe & riser, will provide suitable water flows for this installation. Maximum area of coverage per sprinkler head is 12m2, and the maximum spacing both along the range and between the range pipes is 4.0m. Draw a suitable sprinkler layout on plan, to a suitable scale, assuming a centrally placed distribution pipe fed from the end. (8 Marks) (b) Calculate the water flow requirements of the system in litres/second. (3 Marks) What pressure is required at the control gauge in order to ensure a minimum pressure of 1.5 Bar at each sprinkler head? (6 Marks) Outline briefly the additional requirements of a life safety sprinkler system, when compared to a property safety sprinkler system. (3 Marks) Pressure Loss per metre length of 32 mm pipe = 57 mBar Pressure Loss per metre length of 100 mm pipe = 3 mBar Equivalent length of a 32 mm elbow = 1.04 m Equivalent length of a 32 mm T-piece = 2.13 m Equivalent length of a 100 mm elbow = 3.04 m Equivalent length of a 100 mm T-piece = 6.10 m 7 Section C - Attempt TWO questions QC1 (a) Technical Guidance Document L May 2006 of the Building Regs details the Overall Heat loss method and the Elemental Heat loss method for determining compliance with the Building Regs. Discuss how both of these methods are applied. (4 marks) (b) A two storey detached building measures 14 m by 20m in plan. The combined floor to ceiling height for both storeys is 5.5 m. There is a pitched roof with the insulation laid between the 2nd storey ceiling joists. The total external window and door areas are 24 m2 and 5.4 m2 respectively. Given the following U-values, use the overall heat loss method to check if the proposed dwelling is in compliance. 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