Absorptive formwork for fabricating joist in reinforced concrete, has two lateral flanks fixed at upper wall provided with parallel rows of holes and two lateral rows, where one flank is folded to obtain lateral enlargement

摘要

The formwork has two lateral flanks (4, 5) fixed at a horizontal upper wall (3), and projecting towards the base. The wall is provided with parallel rows of traversing holes arranged along a longitudinal center line of the wall and two lateral rows. One of the flanks is appropriately folded to obtain a lateral enlargement. The flanks are provided with traversing holes (7) aligned on an axis parallel to the wall. Independent claims are also included for the following: (1) a method of in-situ fabrication of joists serving as a foundation to a washing water collecting installation (2) an installation for washing farm vehicles and husbandry implements, for collecting dirty water resulting from washing and for treating the water, including two joists.