Improvements in the construction of underground tanks for storing fluids. (Machine-translation by Google Translate, not legally binding)

摘要

Improvements in the construction of underground tanks for storage of fluids, characterized in that they are constituted with a lower covering that covers the bottom and at least a portion of the sides of the cavity, which are filled with a resistant granular material disposed on said coating and that substantially fills said cavity, said cavity is completed, with an upper impermeable membrane that covers said filling material, and that is provided with inlet and outlet means that interconnect the interior of said cavity with a source of fluid. (Machine-translation by Google Translate, not legally binding)