(1) The hook of the vertical steel bar should face the center of the column, the angle between the hook plane of the corner steel bar of the rectangular column and the formwork surface should be 45, and the angle between the hook and the formwork should not be less than 15 when inserting the vibrator.
(2) Stirrup joints should be staggered vertically; The corner of stirrup and the intersection of vertical reinforcement shall be bound (the intersection of straight part of stirrup and vertical reinforcement can be bound every other plum blossom). When binding stirrups, the wire buckle should be tied into a figure of eight.
(3) When binding column rebar, the verticality should be controlled by messenger wire, and the spacing of main rebar should be strictly controlled. The stirrups at the lap joint of column reinforcement and the vertical reinforcement of column should all be bound, and the rest can be bound at plum blossom point.