| 摘要 |
PURPOSE: A hollow core slab having a stepped edge binding portion for improving integrity is provided to be continuously bound with being overlapped in width direction, thereby improving integrity. CONSTITUTION: A hollow core slab having a stepped edge binding portion for improving integrity includes a slab body(100), a lower stepped binding portion(110), and an upper stepped binding portion(120). The slab body has a certain thickness(T) and width(W). The slab body forms a bottom surface(101), a top surface(102), and a plurality of hollows(103). The plurality of hollows are formed between the bottom surface and the top surface at regular distance in width direction. The lower stepped binding portion is formed at one side of the slab body. The lower stepped binding portion has a bottom surface which is on the same plane of the bottom surface of the slab body. The thickness(t1) of the lower stepped binding portion is thinner than the thickness(T) of the slab body. The upper stepped binding portion(120) is formed at the other side of the slab body. The upper stepped binding portion has an upper surface on the same plane of the top surface of the slab body. The thickness(t2) of the upper stepped binding portion is thinner than the thickness of the slab body. The width(W1) of the lower stepped binding portion is longer than the width(W2) of the upper stepped binding portion(120), thereby forming a gap(G) between the hollow core slab(10) and the next hollow core slab(10') in width direction.
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