Which of the following statement are correct regarding laced column?

I. The effective slenderness ratio must be taken as 1.05 times the actual maximum slenderness ratio.

II. The angle of inclination of the lacing bar with the longitudinal axis of the component must be between 40° - 70°.

III. The lacing is designed to resist the traverse equal to 2.5% of the axial force in the column.

IV. The slenderness ratio of the lacing bar should be less than 180.