Circumferential stirrup panel

A method for adding stirrup reinforcement to a concrete pipe reinforcing cage comprising the steps of:

• providing a mat comprised of a plurality of generally sinusoidal shaped stirrup members, each stirrup member including a plurality of nodes and antenodes, said stirrup members being oriented generally parallel to one another with said antenodes lying in a base plane and with said nodes projecting from said base plane, and said mat further including a plurality of tie wires joined to said stirrup members, said tie wires being oriented generally parallel to one another and generally perpendicular to said stirrup members;
• shaping said mat so that said stirrup members conform generally in curvature to the curvature of a cage to be reinforced at the area to be reinforced;
• and joining said mat to a pipe reinforcing cage with each of said sinusoidal stirrup members oriented to extend circumferentially with respect to said cage and with said tie wires oriented to extend longitudinally with respect to said cage.