Sustainable Drainage System Terms A-Z
S
section 38
An agreement entered into pursuant to Section 38 Highways Act 1980 whereby a way that has been constructed or that is to be constructed becomes a highway maintainable at the public expense. A publicly maintainable highway may include provision for drainage of the highway. (Drainage of highways is defined in Section 100 (9) of the Highways Act 1980).
section 102 or 104
Section within the Water Industry Act 1991 permitting the adoption of a sewer, lateral drain or sewage disposal works by the sewerage undertaker. Sometimes referred to as S102 or S104.
section 106 (Town and Country Planning Act 1990)
A section within the Town and Country Planning Act 1990 that allows a planning obligation to a local planning authority to be legally binding.
section 106 (Water Industry Act 1991)
A key section of the Water Industry Act 1991, relating to the right of connection to a public sewer.
SEPA
Scottish Environment Protection Agency.
separate sewer
A sewer for surface water or foul sewage, but not a combination of both.
sewer
A pipe or channel taking domestic foul and/or surface water from buildings and associated paths and hardstandings from two or more curtilages and having a proper outfall.
sewerage undertaker
This is a collective term relating to the statutory undertaking of water companies that are responsible for sewerage and sewage disposal including surface water from roofs and yards of premises.
sewers for Adoption
A guide agreed between sewerage undertakers and developers (through the House Builders Federation) specifying the standards to which private sewers need to be constructed to facilitate adoption.
site and regional controls
Manage runoff drained fro several sub-catchments. The controls deal with runoff on a catchment scale rather than at source.
SNH
Scottish Natural Heritage.
soakaway
A subsurface structure into which surface water is conveyed to allow infiltration into the ground.
SOIL
Soil Index Value obtained from the WRAP soil classification, used in the Wallingford Procedure to calculate the treatment volume.
source control
The control of runoff or pollution at or near its source.
STORM
A computer model based on equations used in the California Stormwater Best Management Practice Handbook. Used to assess detention basin performance.
sub-base
A layer of material on the sub-grade that provides a foundation for a pavement surface.
sub-catchment
A division of a catchment, allowing runoff management as near to the source as is reasonable.
sub-grade
The surface of an excavation prepared to support a pavement.
subsidiarity
The principle that an issue should be managed as close as is reasonable to its source.
SUDS (Sustainable Drainage Systems)
Sustainable drainage systems or sustainable (urban) drainage systems: a sequence of management practices and control structures designed to drain surface water in a more sustainable fashion than some conventional techniques (may also be referred to as SuDS).
surface water management
The management of runoff in stages as it drains from a site.
suspended solids
Undissolved particles in a liquid.
swale
A shallow vegetated channel designed to conduct and retain water, but may also permit infiltration; the vegetation filters particulate matter. |
