DOI link for Tied Columns
Tied Columns book
A tied column is a concrete column reinforced with transverse reinforcement called ties (Figure 7.1) in addition to longitudinal reinforcement. The main function of ties, as specied for tied columns, is to hold the reinforcement in place during casting. Ties may also serve to resist shear, conne the concrete, and prevent the bars from buckling if they are proportioned properly for those tasks.