fabric is put the strands 10 are referred to as longitudinal wires at the factory where the fabric is made since they are the wires which come off the rolls and which run continously during the fabric manufacturing process the transverse wires 20 are laid down transversely to the longitudinal wires 10 and are welded thereto if the fabric 1 were employed to manufacture cages for concrete pipe however the transverse wires 20 would become 34 longitudinal 34 wires since they would run longitudinally of the cage the longitudinal wires 10 on the other hand would be referred to as 34 circumferential wires 34 since they would extend circumferentially of the cage joined to fabric 1 such that they lie generally in the plane of fabric 1 fig2 and 3 are a plurality of stirrup members 30 one such stirrup member 30 being shown in fig1 each stirrup member 30 includes a tie rod 31 to which a plurality of stirrup projection rods 32 are welded projection rods 32 are welded generally at right angles to tie rod 31 also welded to tie rod 31 at generally right angles thereto are at least two joining projection rods 40 the joining projection rods 40 extend beyond tie rod 31 a distance farther than any of the other projection rods 32 extend and are welded to an adjacent transverse strand 20 the portion of joining projection rods 40 which lies between the parallel transverse wire 20 and tie rod 31 is hereinafter referred to as the joining portion 41 thereof a strike 42 is made at each joining portion 41 so that joining projection rod 40 has a narrower cross section at strike.