| 摘要 |
A frame formed of metal, for draining ditches, comprising two downward pointing legs extending in parallel spaced relationship forming between them a channel having the material in the upper region of the wall of the ditch formed integrally with it therein said legs being interconnected with each other via a web the upper surface of which forms an abutment area for a ditch covering, and a leg extending upwards from the web for holding the channel covering laterally, with the two lower legs, in particular, being provided with several recesses at the undersides thereof leaving between them projections with the recesses and projections of the one lower leg being respectively arranged to abut at least in part or at least approximately the gaps of the other lower leg.
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