Permeable Sub-Base Replacement Systems
- Conventional Block Paving
- Permeable Paving
- Sustainable Urban Drainage Systems
- Total Infiltration
- Partial Infiltration
- Non Infiltration or Tanked
- Permeable Sub-Base Replacement Systems
- Rainwater Harvesting
- Further Information
- New Government Legislation
- Pack Information
In situations where increased water storage capacity or shallower sub-bases are demanded, permeable sub-base replacement systems can be incorporated into permeable paving systems. These proprietary sub-base systems consist of geocellular boxes made of lattice plastic crate-like structures that are connected together to form a rigid raft structure that replaces some or all of the permeable sub-base depending on traffic loading.
The water storage capacity is higher than with conventional granular aggregate sub-bases, with some void ratios of up to 90%. Consequently the overall depth of construction can be reduced resulting in shallower excavation and reduced material disposal to landfill. This type of system typically incorporates a Rainwater Harvesting facility.