Environmental Engineering Reference
In-Depth Information
Figure 8-2
Example of stone aggregate for infiltration-storage bed. Uniformly graded 2 in.
crushed with 40% void space.
Figure 8-3
Storage chambers fabricated from recycled plastics.
include a variety of proprietary, interlocking plastic units (Figure 8-3) that con-
tain much greater storage capacity than aggregate, at an increased cost. Designers
are encouraged to search the marketplace for alternative storage options.
19. All pervious pavement installations must have a backup method for water
to enter the stone storage bed in the event that the pavement fails or has its
permeability otherwise degraded. In uncurbed lots, this backup drainage may
consist of an unpaved 2-ft-wide stone edge drain connected directly to the bed
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