An 8 12 column of No 1 DF L has an unbraced length for buck

An 8 × 12 column of No. 1 DF. (L) has an unbraced length for buckling about the strong x axis of 16 ft and an unbraced length for buckling about the weak y axis of 8 ft, Cr = 1.0 and C,-1.0. 7.23 L b. The factored axial capacity using LRFD considering 1.4D and 1.2D + 1.6L Find a. The maximum axial loads using ASD considering D-only and D

Solution

Dimension of column given= 8 X 12

D.F.(L) =1

Buckling at strong 16ft in x-axis.

Buckling at weak 8ft y-axis.

Cm=1.0

Ct=1.0

Hence max axial load= Force applied X Cross Section Area of col

=1.0X8X12X1.0=96

Considering Factors for load as 1.4D, 1.2D and 1.6L

Factored axial capacity= 96X1.4=134.4

=96*1.2=115.2