civ101f_2005_exam - UNIVERSITY OF TORONTO Faculty of...

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Unformatted text preview: UNIVERSITY OF TORONTO Faculty of Applied Science and Engineering FINAL EXAMINATION, DECEMBER 9, 2005 First Year - Programs 1,2,3,4,6,7, 8 and 9 CIV 101F - STRUCTURES, MATERIALS, AND DESIGN Examiner: Staff in Civil Engineering M“ FAMILY NAME: GIVEN NAMES: ma (Please print clearly) STUDENT NUMBER: CIRCLE THE NAME OF YOUR LECTURER AND YOUR GROUP LETTER A Kuhn, Eva E Kamaleddine, Fouad H Packer, Jeffrey A. B Kuhn, Eva F J oghataie, Reza J Seica, Michael C Birkemoe, Peter C G Angelakos, Bill K El-Diraby, Tamer K D Wright, Peter M CIRCLE MODEL NUMBER OF CALCULATOR CASIO 260 SHARP 520 TI 30 NOTES: 1. Be sure you have all 7 sheets of this examination paper. Page 7 is blank. If you need more space for a question please use the back of the preceding question. In all cases indicate clearly where your calculations are continued. 2. Answer all 5 (five) equal-valued questions. 3. No other paper will be accepted for marking nor allowed on the desk. 4. The permissible calculators are listed above. 5. Solutions must include free body diagrams which are NOT to be superimposed on the original sketches. DO NOT WRITE IN THIS SPACE. Page 2 of 7 Name 1. The solid 6 m wide gate (barrier) ABC whose cross-section is shown has a uniform density of 4000 lszg/m3 . It is used to control flow in a fresh water smooth—bottomed channel. Determine the reaction components at the hinge A and at the contact point C. Page 3 of 7 Name 2. The timber truss shown, which is supported by a pin at A and a roller at B, is subjected to a single vertical load P = 117 kN which can act at either point C or point D. Considering both cases, determine the required cross- section for member ED assuming that the failure stresses for the timber are 10 MPa in tension and 15 MPa in compression. Use a load factor = 2.4, and E = 12 x 103 MPa. The cross-section is also shown. 0.53 Page 4 of 7 Name 3. The 2.2 m uniform bar AB is supported by a ball-and-socket at A and two smooth walls at B, one in the x-y plane and one in the y—z plane. The bar weighs 400 N/m and the tension in the vertical cable CD is 2 kN. Sketch the free body diagram for the bar AB, and determine the reaction components at A and B. ,, 777‘—-—————F—— Page 5 of 7 Name The pin-connected frame is supported by a cable AB and a pin at O. Neglecting the weights of all of the components determine: (a) the force in the cable AB and the reaction components at O (b) the force components acting at B, C, D, and O of member BCDO. Show the force components on a sketch of BCDO. Page 6 of 7 Name 5. A simply supported emergency pedestrian bridge spans 10 m; one of the beams is shown in Figure A. The bridge consists of a timber deck fastened to two beams each made from tw0127 x 76 x 8 hollow structural sections (HSS) as shown in the cross-section. The load on the bridge consists of a uniform load of 1.5 kN/m2 which includes the self-weight of the bridge, and two concentrated loads‘of 10 kN, one on each beam. Assume that the yield stress for the steel is 350 MPa. The properties of the HSS are given below. (a) Sketch the shear and moment diagram for one beam ‘ (b) Determine the maximum stress in the beams due to bending moment (0) Comment on theradeguacy (safety) of the beams. RECTANGULAR HollowStrucluralSecllons lama Designation Load Area Zx J C“ t , mmmmmm; _ 7 HSSIéfiiéggjs rhii§3127x7627x9§55a . . 96.4 . 705 28.6 37.5 6600 690 ._. ._, - x . x .. . . x 6.4 Cross-Section . 7 _ of the Whole Bridge Beam Section Page 7 of 7 Name ...
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This note was uploaded on 06/22/2008 for the course ENGINEERIN CIV101 taught by Professor Various during the Fall '08 term at University of Toronto- Toronto.

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civ101f_2005_exam - UNIVERSITY OF TORONTO Faculty of...

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