For battened beam-columns, the global stability of the column limb can be calculated according to ( ).
Axial compression member
Beam
C. Tension member
D. Beam-column
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What kind of global buckling may occur outside the moment plane for the unidirectional flexural solid-web beam-columns? ( )
A. Bending buckling
B. Torsional buckling
C. Lateral-torsional buckling
Distortional buckling
When Q345 steel is used for welding components, the type of electrode used shall be .
A. E43
B. E50
C. E55
D. E60
Grade 1 and Grade 2 welds require a certain amount of ultrasonic inspection, and the detection rate of Grade 1 welds is and the detection rate of Grade 2 welds is 20%.
A. 20%
B. 50%
C. 80%
D. 100%
When calculating the tensile strength of the Grade 3 butt weld, the design value of the tensile strength takes of that of the base material.
A. 50%
B. 70%
C. 85%
D. 90%