To provide a drainable paving structural body capable of maximally bringing out drainage capacity of a paving body while preventing the exposure to the surface of the paving body by enlarging an outside diameter of a raw water transmission pipe and the occurrence of a crack of the paving body of the upper part of the raw water transmission pipe.
In the drainable paving structural body embedding the raw water transmission pipe 6 in the drainable paving body 1 consisting of an open-graded paving body 2 of a surface layer and an impervious layer 3 of a lower layer along a side section on the paving body side, it is so constituted that (1) a plurality of raw water transmission pipes are provided to be adjacent to each other, (2) an outside diameter (D) of each raw water transmission pipe is 8 to 40mm and that (3) a distance (h) between the outermost surface of the surface layer and the outermost surface of the raw water transmission pipe is not less than 12 mm.
YAMADA YOSHIHIKO
YOSHIKAWA TORU
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