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→Planning Considerations
==Planning Considerations==
==Planning Considerations==
[[File:Cultec_infiltration_chamber_550x550.jpg|Infiltration chambers being installed]]
[[File:Cultec_infiltration_chamber_550x550.jpg|thumb|Infiltration chambers being installed]]
Both modular systems require a lower bedding layer of angular stone to permit infiltration, and provide a foundation for the installation:
Both modular systems require a lower bedding layer of angular stone to permit infiltration, and provide a foundation for the installation:
*Plastic modules usually have a parabolic shape to resist the load above. The spaces between the rows of the gallery are then filled with more clear stone to support the overlying infrastructure.
*Plastic modules usually have a parabolic shape to resist the load above. The spaces between the rows of the gallery are then filled with more clear stone to support the overlying infrastructure.