What is the easiest way to analyze a column section?

Generally, columns are built with the same reinforcement in the two faces parallel to the axis of bending.

Determine the maximum axial strength φPn,max for the following tied column.Column width, b = 28 in.Column thickness, h = 26 in.Number of longitudinal bars = 4Size of longitudinal bars = No. 10Size of ties = No. 4Concrete strength = 8,000 psiYield strength of longitudinal bars = 60,000 psiYield strength of ties = 60,000 psi

What does the horizontal axis of a typical interaction diagram for reinforced-concrete column represent?

What is the strength-reduction factor, φ, for tied columns?

Determine the maximum axial strength φPn,max for the following tied column.Column width, b = 24 in.Column thickness, h = 28 in.Number of longitudinal bars = 8Size of longitudinal bars = No. 8Size of ties = No. 3Concrete strength = 8,000 psiYield strength of longitudinal bars = 60,000 psiYield strength of ties = 40,000 psi

Use the interaction diagrams found in Appendix A of the textbook to determine whether the following circular spiral column can safely support a load of Pu = 704 kip and Mu = 241.3 kip-ft.h = 16 in.fc’ = 4 ksify = 60 ksiγ = 0.9ρg = 0.02

In small buildings, the most frequently used concrete strength is _______ to _______ psi.

Ties restrain the longitudinal bars from buckling out through the surface of the column.

In seismic regions, column ties are heavier and spaced further apart than ties in nonseismic regions.