PRECAST CONCRETE SLABS AND CONSTRUCTED STRUCTURES THEREOF

摘要

The present invention relates to a precast concrete slab and a combination structure thereof. The precast concrete slab of the present invention comprises: a plate unit; and, multiple first ribs extended in a longitudinal direction by being mutually distanced for a set interval in a widthwise direction on the bottom surface of the plate unit, which has main roots buried in the longitudinal direction. On both end units in a widthwise direction of the plate unit, are formed step units whose set height is lower than the top surface of the plate unit.