Flooding in London

Regionally, London has the highest number of people at risk from flooding. In the Greater London area, there are 542,000 properties and around one million people located in the floodplain. Although London has the largest number of people at risk (458,000), 18% of properties at risk in London are in areas with a low chance of [...]

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Planning implications for schemes with large water using features

There are advantages and disadvantages of incorporating large water-using features into landscape designs. On the one hand water features add amenity value, ecological value and can be used as a technique for attenuating surface water run-off. On the other hand they usually require large volumes of water and can often consume large amounts of energy. [...]

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Looking forward to 2013

Planning The wider adoption of Community Infrastructure Charging Schedules (the use of planning obligations will be more restricted from April 2014); The expiration on 27 March 2013 of the 12-month NPPF transitional period, designed to allow some protection for existing local plans depending on the date of their adoption, even where there is a limited [...]

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Implementation of Flood Water Management Act moves closer

Implementation of the Flood and Water Management Act (2010) moved a step closer last week with the closing of the consultation period on the National Standards for SUDS. The Act will make the incorporation of SUDS compulsory for new development, with approval for surface water drainage design from a SUDS Approval Body (SAB) required before construction work [...]

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Strategy for ensuring Code compliance

1. START EARLY The Code Assessor is an important member of the team, who will not only be responsible for completing the Code compliance requirements for the development, but can also assist on which credits should be aimed for and how they can be achieved. It is recommended that a core team is formed, to [...]

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The changing face of the Code—impacts from the new guidance on the SUR1 credit

On 16 December 2009 BRE published ‘Supplementary Guidance on the Assessment of the Management of Surface Water Runoff (SUR1)’. Our download provides a detailed analysis of the main changes. In summary these changes are: Existing planning consents and statutory requirements can meet the Code requirements by default.  For large phased developments with existing drainage infrastructure [...]

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Why do green roofs die?

There are several different types of green roofs.  Intensive roofs are thicker and heavier more like roof gardens and require regular maintenance.  Extensive roofs are lighter and typically sedum based, requiring less maintenance, often only once a year depending on the location of the roof. Typical requirements of an extensive roof is yearly fertilizing and [...]

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Biodiversity benefits of brown roofs

Industrial brownfield sites can include valuable ecosystems, supporting rarely found species of plants, animals and invertebrates. When the site is re-developed this biodiversity can be preserved by the use of a ‘brown roof’. In order to encourage biodiversity the Rio Earth Summit in 1992 the ‘Convention on Biological Diversity’ (CBD) was adopted and set the [...]

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Code for Sustainable Homes: surface water issues – October 2009

This note identifies key housebuilding experiences in achieving Code Certification for the Surface Water Credits. It has been prepared for technical representations to BRE and CLG. In summary, it is considered that the current SUR 1 mandatory elements are overly prescriptive and often inappropriate to achieve their stated outcomes. They should be replaced with a [...]

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Greywater recycling and CO2 emissions

Using greywater for WC flushing is less energy efficient than using the mains water supply. Traditional water saving techniques such as aerated taps and dual flush WCs remain the most important technologies to improve water efficiency. We have calculated that the CO2 emissions associated with greywater recycling systems are around 1kgCO2/m2. This offsets typical savings [...]

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