Location
Gloucester
Sector
Commercial
The council accepted the soakaway drainage design for planning.
Soakaways approved
Rainwater drains into the ground, sized for a 1-in-100-year storm.
Soakaways worked
01
The uncertainty
A commercial development needed evidence that infiltration drainage was viable to support its SuDS strategy and planning submission.
02
What we established
The measured infiltration rate supported a soakaway design suitable for a 1-in-100-year rainfall event with a 40% climate change allowance, consistent with Gloucester City Council’s SuDS requirements.
03
What changed
The soakaway-based drainage strategy was accepted by the local planning authority, removing the need to discharge to surface water sewers.
04
What was avoided
A surface water sewer connection.
05
How we got there
- BRE Digest 365-compliant testing at the proposed soakaway location
- Mechanically excavated trial pits with soil permeability and groundwater recorded
- Rapid technical report for civil engineers, planners and the local planning authority
Services on this project
BRE 365 Soakaway Testing
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