Electro-welded lattice reinforcement in reinforced concrete ribbed slabs

Shear strength of precast concrete ribbed slabs reinforced with electro-welded lattice girders variable height is experimentally verified. Technical justification given for the use high latticework in reinforcement lightweight double-tee and 30 cm thickness. It was established that contribution to shear always higher than expected values according Spanish standards. Furthermore, as low exhibited lower ultimate ones based on standards, need arose provide an adequate lattices ensure anchorage compressed area order develop strut-and-tie mechanisms. Consequently, approximately 80% specimen are highly recommended slabs, when length chords 20 cm.