A structure comprises a plurality of prefabricated rectangular pillars (1) and a square prefabricated waffle slab (2) placed on the pillars such that each corner of the waffle slab is in contact with part of a pillar. The waffle slab may be constructed such that the underside has a smaller...
workability such as transportability, storage properties, handling properties, etc., by forming a cover for constructing a waffle slab in a plate shape at the time of transport and the time of storage and without becoming larger than a resin sheet molded form with an L-shaped cross section. ...
By fitting ring 514 is mounted on the upper side of the opening of the concrete injection groove 522 so as to correspond to each other, the fitting ring 514 corresponding to the lower core 62 and the lower core 72 of the right waffle slab 7 of left waffle slab 6 each other Through ...
The waffled slabs work in one or two directions; a unidirectional slab is used in small and wide spans, if the support beam is of a large span, the rigidity will be increased by locating one or two ribs at each side of the beam with the suitable separation in the current technique. ...