Apparatus for receiving run off water in shopping centers and the like
includes an underground storage area from which the stored water
percolates into the local aquifer or is pumped out, as desired or as
required. Several embodiments of perimeter support structures are
illustrated. In one embodiment, a retaining wall is used to support
structural tee elements, and in another embodiment caissons are spaced
apart and receive L-beams which in turn support structural tee elements.
Other embodiments show full vertical walls and stepped walls. The tee
elements may be used to support a parking area for vehicles or to provide
support for other appropriate uses. An appropriate liner is secured to
the perimeter support structure for holding the run off water.