Page 112 - Updated SuDS Design & Evaluation Guide-Newham V3 Spreads

P. 112

Detailed Design 9.8 Amenity 9.8.2 Accessibility Detailed Design

Confirming integrated SuDS design
All parts of the SuDS landscape should be
accessible to both everyday users and site
Amenity is one of the four pillars of SuDS
managers.
design and perhaps open to the most
Full accessibility requires safety by design for
interpretation and judgement.
every element of design including:
Amenity focuses on the usefulness and
aesthetic elements of SuDS design
associated with features ‘at or near the
changes of level
surface’, and considers both multi- ■ ■ open water
functionality and visual quality. ■ design detailing eg. headwalls, inlets and
outlets
The amenity value of SuDS will have been

considered at both Concept and Outline ■ clear visibility of the system
design stages but some finer aspects of value ■ physical accessibility to all with an
will be enhanced by detail design at stage.
understanding of the limitations of level
Hopwood Park MSA M42. Wooden terrace and
An evaluation of the successful integration of changes and open water. balastrade with wet bench and planted aquatic
amenity uses the design criteria set out in bench protection to open water.
Concept Design.
Informal play, through integrated design.
9.8.3 Multifunctionality
107 Many parts of the SuDS landscape can be Other functionality can include: 108
9.8.1 Legibility useful in ways not associated with managing

Understanding how the SuDS design ■ How does runoff travel from where it has rainfall. ■ play opportunity throughout the SuDS
landscape
functions is important both to everyday users been collected onwards through ‘source Permeable pavement is an example of full
of the SuDS environment and those who look control’ components to each part of the multi-functionality in that the surface is ■ informal leisure like jogging, picnics,
after it. site. This is conveyance? always available for managing rainfall and dog-walking etc

An exercise in following each management ■ Where is runoff stored and cleaned along also allows vehicle access, parking and ■ community activities such as gardening
train from source to outfall and imagining the management train in ‘site controls’ pedestrian use. etc
how the scheme presents itself to the visitor recognising that these functions may Reasonably level green space can be used for ■ wildlife habitat
should highlight any problems with legibility. occur within permeable construction? sports and other social activity most of the
Considerations will include: ■ education.
■ Where are flow controls are located? time but not when inundated. Everyday
■ How is rainfall collected? rainfall (1-2 year return period events) can be Usability of swales and basins can be
■ Are overflow and exceedance routes clear
designed to be managed elsewhere in the enhanced by under-draining into filter
■ What ‘source control’ techniques have and understandable? landscape. trenches below the ground to keep grass
been used and how they can be accessed ■ Is the outfall obvious, accessible and surfaces dry most of the time. For instance,
and maintained?
understandable? within housing where grass surfaces are
valuable for play.

107 108 109 110 111 112 113 114 115 116 117