Question

(18 points) Dfficuity (4/5) Given the truss shown, loaded and dimensioned with the values given here: a-5ft F1-900b F3-1920b c-8.lfr Find the fo owing, assuming the truss does not deform out-of-plane a) The reaction forces at the supports. b) The forces carried in each member c) The minimum required dameter of the tension members, assuming the members have circular cross-sections and are composed of a material that has an allowable stress of 24 ksi. (Enter NA for compressive members) d) The change in length of the tension members, assuming they have circular cross-sections with the minimum diameters found in part (c), and are composed of a material that has an elastic modulus of 31000 ksi. (Enter NA for compressive I the support applies an upward or rightward force on the structure, enter a positive vaue, otherwise enter a negative vaue) b), (c) and (d) Denote tensile forces with positive values and compressive forces with negative vaiues. Enter NA for the diameters and changes in length of compressive and zero-force members.) Required Change in Force AR CD DE GIN IS CJ CI CHI DIN EH

Answer 1

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