To develope a drainage port on a drainage canal for drainage pavement free to set an existing drainage canal on a road surface with interlocking blocks laid on it and to replace it in a short period of time when a water- permeable function is deteriorated with no sense of incongruity and its fixing method.
A plural number of bolts 4 are erected on an upper surface of a drainage, through holes to insert the bolts are rspectively provided by avoiding a decorative material on a bottom part of a decorative material frame body corresponding to positions of these bolts, the bolts are respectively fastened by box nuts from upper parts and fixed free to connect and disconnect at the time of placing and installing the decorative material frame body 2 on the upper part of a drainage canal 1 for drainage pavement free to connect and disconnect, filling the decorative material 3 consisting of a water permeable material of ceramics, color sand, etc. in the upper part of the frame body and installing the decorative material frame body filled with the decorative material 3 on the upper part of the drainage for drainage pavement.
SUZUKI KIYOSHI
YAMAMOTO KO
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