| 摘要 |
PROBLEM TO BE SOLVED: To provide a side ditch system with connection tools and a combination of the connection tools in order to obtain better efficiency by installing the connection tools between concrete-made side ditch covers. SOLUTION: A pair of fitting parts for fitting to a shorter side of side ditch covers from a lateral direction is constituted so as to be symmetrical via a gap forming member at a rear face, and a side ditch system is comprised of connection tools which is characterized by preventing from chattering of side ditch covers by installing to the side ditch covers and discharging rainwater to the side ditches, the side ditch covers which have recessed installation parts respectively arranged at both shorter parts where arbitrary side ditches and side ditch covers are installed, and connection tools which are arranged so that a pair of fittings for fitting to the installation parts is symmetrical via the gap forming member at the rear face. The side ditch system is characterized by preventing from chattering of the side ditch covers by sequentially fitting the side ditch covers and the connection tools to the side ditches and discharging rainwater to the side ditches and an upper face of the connection tools and an upper face of the side ditch covers become almost same height in relation to installation state. COPYRIGHT: (C)2008,JPO&INPIT
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