Steel Design Te...

The IS 800:2007 says that the effective slenderness ratio of the laced built-up column is to be increased by a factor X to that of the maximum slenderness ratio of the column. Let Y be the reason for doing this. Which of the following is correct?

Consider the following two statements:

Statement I: A semi-compact section cannot reach yield stress.

Statement II: A semi-compact section cannot develop plastic moment of resistance.

A beam column for a non-sway column in a building frame is subjected to a factored axial load of 500 kN, factored moment at bottom of column of 45 kNm. For ISHB 200, the values are A = 4750 mm², γ_y = 45.1, h = 200 mm, b = 200 mm, b_f = 9 mm and the effective length is 0.8 L. Its buckling load will be

An I-section beam is fabricated with plates having an elastic section modulus of 200 × 10^-5 m³. If the laterally unsupported steel beam is classified as a semi-compact section, then the design plastic moment capacity of the beam considering Fe 410 grade of steel and the partial safety factor of material as 1.1 will be ____ kNm. (Use Bending stress reduction factor (X_LT= 1.0)