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8.4 Design criteria considerations
Quantity
The designer should confirm Outline Design
■ whether infiltration is appropriate for the ■ storage locations and approximate
site or whether rainfall will be managed as volumes to appropriate flow rates
runoff
■ overflow arrangements from each storage
■ whether Approach 1 or Approach 2 is location
being used to manage volumes
■ exceedance routing when design volumes
■ contributing area of impermeable hard are exceeded or flows are generated from
surface outside the site
■ sub-catchment design ■ allowances for climate change and urban
creep.
■ flow control locations
Quality
The designer should demonstrate
■ there are sufficient SuDS surfaces to meet ■ how spillage could be managed 60
interception losses requirements
■ how runoff could be managed during
■ sufficient treatment is available to manage construction.
pollution risk along the management train
Amenity
The designer should demonstrate
■ the SuDS is understandable to people ■ the visual character of the SuDS will
using the site and maintenance personnel enhance the development
– legibility
■ spaces and connecting routes are multi-
■ the site is generally accessible to people functional and can be used when not
and safe ‘by design’ providing a SuDS function for rainfall
management.
Enfield Council SuDS D & E Guide © 2018 McCloy Consulting & Robert Bray Associates
