It is required to design tension members under three levels of factored tensile forces (65kN, 800kN...

  

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It is required to design tension members under three levels of factored tensile forces (65kN, 800kN and 1250kN). For each load level, consider three cross-section types (a single angle, a wide flange section W, and a square HSS Based on ASTM specifications-P6-106-115 in the 11th edition of the Handbook), i.e. the total number of designs required = 3 load levels x 3 cross-section types = 9 cases. Given: (a) All members have a 4m span. (b) All connections are welded and hence the net area will equal the gross area (A = Ag ) (c) Your design should conform to CAN-CSA-S16 requirements regarding slenderness, yield, and fracture limit states. (d) Neglect shear lag calculations in your solution (e) All steel is 300W with F = 300MPa and F = 450MPa y (f) For economic reasons, choose the lightest section that satisfies the design constraints in each of the nine cases. 1) For each case, show relevant equations, substitutions, and units. 2) Summarize your results in the tabular form below. In each case, identify the section chosen, the corresponding gross area, the maximum slenderness, the yield strength of the member, and the governing mode for each case, and whether the type of section chosen is economic. In some cases, you will notice that for a certain type of sections (angle, W, or HSS) the lightest section available in your handbook happens to exceed by far the resistance or slenderness requirements. In such cases, none of the modes of failure governs the design. In such cases the governing mode of failure should be marked as "none". This indicates that the type of section chosen is not economic/suitable for the level of force and/or span of the member. Factore Section Gros Maximum Yield Fractur Governin Is d Designatio S slendernes strengt e g mode of chosen Tensile n Area S h capacit failure section force (mm) (kN) y (kN) (kN) type economi C 65 65 65 800 800 800 1250 1250 1250 It is required to design tension members under three levels of factored tensile forces (65kN, 800kN and 1250kN). For each load level, consider three cross-section types (a single angle, a wide flange section W, and a square HSS Based on ASTM specifications-P6-106-115 in the 11th edition of the Handbook), i.e. the total number of designs required = 3 load levels x 3 cross-section types = 9 cases. Given: (a) All members have a 4m span. (b) All connections are welded and hence the net area will equal the gross area (A = Ag ) (c) Your design should conform to CAN-CSA-S16 requirements regarding slenderness, yield, and fracture limit states. (d) Neglect shear lag calculations in your solution (e) All steel is 300W with F = 300MPa and F = 450MPa y (f) For economic reasons, choose the lightest section that satisfies the design constraints in each of the nine cases. 1) For each case, show relevant equations, substitutions, and units. 2) Summarize your results in the tabular form below. In each case, identify the section chosen, the corresponding gross area, the maximum slenderness, the yield strength of the member, and the governing mode for each case, and whether the type of section chosen is economic. In some cases, you will notice that for a certain type of sections (angle, W, or HSS) the lightest section available in your handbook happens to exceed by far the resistance or slenderness requirements. In such cases, none of the modes of failure governs the design. In such cases the governing mode of failure should be marked as "none". This indicates that the type of section chosen is not economic/suitable for the level of force and/or span of the member. Factore Section Gros Maximum Yield Fractur Governin Is d Designatio S slendernes strengt e g mode of chosen Tensile n Area S h capacit failure section force (mm) (kN) y (kN) (kN) type economi C 65 65 65 800 800 800 1250 1250 1250