Surface water run-off
Surface water run-off is: 'Water flow over the surface of roofs and ground surface to a drainage system. Ground surface run-off occurs if the ground is impermeable, is saturated or if the rainfall is particularly intense.'
Volume of run-off is: 'The volume of run-off that is generated by rainfall occurring on the site. This is typically measured in cubic metres. Additional predicted volume of run-off is the difference between the volumes of run-off; pre-development, greenfield and post development.'
Ref Home Quality Mark One, Technical Manual SD239, England, Scotland & Wales, published by BRE in 2018.
NB Run-off coefficient is a measure of the amount of rainfall that is converted to run off.
A recurrence interval is: ‘The average time between runoff events that have a certain flow rate, for example, a flow of 2 m/s might have a recurrence interval of two years.’ Ref The SuDS Manual (C753) published by CIRIA in 2015.
Climate Change 2021, The Physical Science Basis, published by the Intergovernmental Panel on Climate Change in 2021, defines runoff as: ‘The flow of water over the surface or through the subsurface, which typically originates from the part of liquid precipitation and/or snow/ice melt that does not evaporate, transpire or refreeze, and returns to water bodies.’
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Issue support documents
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[edit] Management:
- BREEAM Sustainability champion
- BREEAM Environmental management
- BREEAM Considerate construction
- BREEAM Monitoring of construction site impacts
- BREEAM Aftercare support
- BREEAM Seasonal commissioning
- BREEAM Testing and inspecting building fabric
- BREEAM Life cycle cost and service life planning
- BREEAM Stakeholder consultation (ac)
- BREEAM Commissioning (ac)
- BREEAM Handover (ac)
- BREEAM Inclusive and accessible design (ac)
- BREEAM Post occupancy evaluation
[edit] Health and Wellbeing
- BREEAM Visual comfort Daylighting (partly ac)
- BREEAM Visual comfort View out
- BREEAM Visual comfort Glare control
- BREEAM Indoor air quality plan
- BREEAM Indoor air quality Ventilation
- BREEAM Thermal comfort
- BREEAM Internal and external lighting (ac)
- BREEAM Indoor pollutants VOCs (ac)
- BREEAM Potential for natural ventilation (ac)
- BREEAM Safe containment in laboratories (ac)
- BREEAM Acoustic performance
- BREEAM Safety and security (ac)
[edit] Energy
- BREEAM Reduction of energy use and carbon emissions
- BREEAM Energy monitoring
- BREEAM External lighting
- BREEAM Low carbon design
- BREEAM Passive design
- BREEAM Free cooling
- BREEAM LZC technologies
- BREEAM Energy efficient cold storage (partly ac)
- BREEAM Energy efficient transportation systems
- BREEAM Energy efficient laboratory systems
- BREEAM Energy efficient equipment (partly ac)
- BREEAM Drying space
[edit] Transport
- BREEAM Transport assessment and travel plan
- BREEAM Public transport accessibility
- BREEAM Sustainable transport measures
- BREEAM Proximity to amenities
- BREEAM Cyclist facilities
- BREEAM Alternative modes of transport (ac)
- BREEAM Maximum car parking capacity
- BREEAM Travel plan
- BREEAM Home office (ac)
[edit] Water
- BREEAM Water consumption
- BREEAM Water efficient equipment
- BREEAM Water monitoring
- BREEAM Water leak detection (ac)
[edit] Materials
- BREEAM Hard landscaping and boundary protection
- BREEAM Responsible sourcing of materials
- BREEAM Insulation
- BREEAM Designing for durability and resilience
- BREEAM Life cycle impacts
- BREEAM Material efficiency (ac)
[edit] Waste
- BREEAM Construction waste management
- BREEAM Recycled aggregates
- BREEAM Speculative floor & ceiling finishes
- BREEAM Adaptation to climate change
- BREEAM Operational waste
- BREEAM Functional adaptability (ac)
[edit] Land Use and Ecology
- BREEAM Site Selection
- BREEAM Ecological value of site
- BREEAM Protection of ecological features
- BREEAM Minimising impact on existing site ecology
- BREEAM Enhancing site ecology
- BREEAM Long term impact on biodiversity (ac)
[edit] Pollution
- BREEAM Impact of refrigerants
- BREEAM NOx emissions
- BREEAM Flood risk management (ac)
- BREEAM Surface water run-off (ac)
- BREEAM Reduction of night time light pollution (partly ac)
- BREEAM Reduction of noise pollution
Once an ISD has been initially created the '(ac)' marker can be removed
This particular index is based around the structure of the New Construction and RFO schemes.