UFC 3-210-10
25 October 2004
8-14.2
Cost Data. Permeable asphalt costs range from t0 per square meter
(
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.50 to
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.00 per square foot,) while permeable concrete costs between and per square meter ( .00 and .50 per square foot.) In addition, permeable pavements
may reduce or eliminate the need for additional stormwater infrastructure, so a more
accurate price comparison would involve the costs of the full stormwater management
paving system. For example, a grass/gravel paver and porous concrete representative
stated that when impervious paving costs for drains, reinforced concrete pipes, catch
basins, outfalls and storm drain connections are included, an asphalt or conventional
concrete stormwater management paving system costs between 2 and 5 per
square meter (.50 and .50 per square foot,) compared to a permeable pavement
stormwater management system at to per square meter (.50 to .50 per
square foot.) The savings are considered to be even greater when permeable paving
systems are calculated for their stormwater storage; if designed properly, they can
8-14.3
Maintenance Issues. Maintenance requirements are similar to those for
permeable pavers. To maintain its permeability, the pavement must be vacuumed or
cleaned with a street sweeper twice a year. This removes sediments, organic matter,
and atmospheric deposition that would otherwise clog the pavement over time.
8-14.4
Corrective Actions. With proper preventative maintenance, no additional
actions should be necessary to maintain permeability. Pavements that have clogged as
a result of neglect may require intensive vacuuming. As with conventional pavement,
normal wear and tear may require repairs. For asphalt, however, care should be taken
to replace the affected areas, because re-sealing would create an impervious surface.
Contractors and maintenance staff should be acquainted with the differences between
conventional and permeable pavement in order to prevent such a scenario.
Figure 8-14. Permeable Pavement Cross-Section
Figure 8-15. Drainage in
Both Types of Pavement
35
Peterson, 2002.
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