New reinforced concrete element for the construction of prefabricated ditches (Machine-translation by Google Translate, not legally binding)

摘要

New reinforced concrete element for the construction of prefabricated ditches, characterized in that it consists essentially of a piece of reinforced concrete, corrugated, of trapezoidal section, with the greater open base and the sides that rest on it, flanged externally, and whose surfaces interior and exterior are identical, moving from the last to the first by vertical parallel translation and the existence of the mentioned flanges. (Machine-translation by Google Translate, not legally binding)