Determine the effective length of the following column where L = 12 ft. One end is fixed. The other end is free to rotate and translate.

The critical buckling load is sometimes called the _______ load.

The ratios bf/2tf and h/tw are called _______ and denoted by the Greek letter ___.

What is L/r?

A W16 x 50 column is made from ASTM A36 steel and has a length of 36 ft. The column is only supported at its ends. Both ends are pinned. Determine the elastic buckling stress, Fe, for this column.

A W18 x 35 column is made from ASTM A572 Gr. 42 steel and has a length of 31 ft. The column is only supported at its ends. Both ends are pinned. Determine the elastic buckling stress, Fe, for this column.

Can a W14 x 53 column with an effective length of 6 feet support a dead load of 80 kips and a live load of 80 kips? Use LRFD.

A W18 x 35 column is made from ASTM A572 Gr. 60 steel and has a length of 15 ft. Both ends are pinned. Determine the effective slenderness ratio.

A W14 x 90 column is made from ASTM A572 Gr. 60 steel and has a length of 30 ft. The column is only supported at its ends. Both ends are pinned. Determine the nominal compressive strength, Pn, for this column. Assume the shape is nonslender.

Is a W-shape with the following details considered slender according to AISC 360 Table B4.1a?bf/2tf = 10h/tw = 38Fy = 50 ksi