Artificial blocks for the construction of hydraulic works (Machine-translation by Google Translate, not legally binding)

摘要

Block for the construction of hydraulic works, characterized in that it is provided with at least four protuberances, whose axes depart substantially from a common center, each of said protuberances having a cross section according to a plane perpendicular to the axis of the protuberance , whose periphery does not present any acute angle. (Machine-translation by Google Translate, not legally binding)