Question

1. Multiple choice questions (4 scores for each question, 20 scores in total) (1) The condition for the axial compression member equal stability in both principal axes: () A. Equal bar length B. Equal calculated length C. Equal slenderness ratio D. Equal sectional geometry dimension (2) The ultimate state of the axial tensile member is calculated by strength is: ( A. The average stress of the net section reaches the tensile strength f, of the steel. B. The average stress of the gross section reaches the tensile strength of the steel. C. The average stress of the net section reaches the yield strength f, of the steel. D. The average stress of the gross section reaches the yield strength f, of the steel. (3) When there is a fixed and large concentrated load on the beam, its operating point should be:( A. Set longitudinal stiffeners B. Set transverse stiffeners C. Reduce the web width D. Increase the flange thickness (4) The slenderness ratio of each limb is specified as 2, 50.77mer, which is for the purpose of (). A. Keep the whole column stable B. To enable the two limbs to work together C. Avoid instability of one limb before the whole column D. Construction requirements (5) In order to improve the global stability of the beam, () is the most economical and effective way. A. Increasing the cross section B. Increasing lateral support point and decreasing / C. Set transverse stiffeners D. Changing the position of the load

Answer 1

D equal Lectional geomesg dimessig (A The average <treff of het section which is the tehsil Strength hood the steel, Increase the 3. D flange thickness B 7 A Avoid Thefasienty of one time befor the whole column c 6 © Let tranfverde stiffeners

Answer 2

correct answer is

1. d

2. a

3. d

4. c

5. c