− | As can be seen, regardless of outlet configuration, Material & Installation expenses represent the largest portion of the total construction costs (82 to 85%). These include costly components such as the, [[Liner|impermeable membrane/liner]], the [[underdrain]], the [[Permeable pavements#Foundation Aggregates|sub-base]] layer of 50 mm dia. [[clear stone]], base layer of 19 mm dia. [[clear stone]], [[Bedding layer|bedding layer]] and interlocking pavers. | + | As can be seen, regardless of outlet configuration, Material & Installation expenses represent the largest portion of the total construction costs (82 to 85%). These include costly components such as the, [[Liner|impermeable membrane/liner]], the [[underdrain]], the [[Permeable pavements#Foundation Aggregates|sub-base]] layer of 50 mm dia. [[clear stone]], [[Permeable pavements#Foundation Aggregates|base]] layer of 19 mm dia. [[clear stone]], [[Bedding layer|bedding layer]] of 5 mm dia. [[clear stone]] and interlocking pavers themselves. |