Get Prepared for Part L 2013

April 6th 2014 will see the introduction of Part L 2013.  From this date projects will only be exempt from the new regulations under the following circumstances: Where work has already commenced; Where the project has already had a full plans submission, initial notice or building notice served if work begins on site before April [...]

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Part L 2013 – The Increased Importance of Thermal Bridging

  SUMMARY Achieving compliance with Part L1A 2013 will require detailed consideration of thermal bridging in all new dwellings. For some dwelling types, this is already common practice.  For non-traditional construction types where developers have typically used default values for thermal bridging, design teams have a choice of either making significant improvements to all other [...]

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Part L1A 2013 sets high energy efficiency targets

The Approved Document L1A, 2013 edition was published in November alongside the Standard Assessment Procedure 2012.  These two documents bring long-awaited clarity to the subject of energy and CO2 performance targets for new dwellings and will allow house builders to begin planning their routes to compliance. Both the Target Emission Rate (TER) and newly introduced [...]

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London Plan moves to 40% carbon dioxide reduction on regulated energy

As we reported in September, the Greater London Authority (GLA) has clarified that the move to a 40% CO2 reduction over Building Regulations Part L 2010 (London Plan Policy 5.2) came into effect from the 1 October 2013. This applies to both residential and non-residential development. The GLA is seeking this reduction on all referable [...]

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The Increasing Importance of Thermal Bridging

Thermal modelling of construction details is a key tool for developers seeking to comply with the new fabric standards for Part L 2013 and address the technical concern of surface condensation risk. This will become increasingly valuable when statutory fabric performance requirements are introduced in April 2014. Using 2D and 3D thermal modelling software, we [...]

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Special report on Building Regulation changes to Part L 2013

Expected in April, and now finally with us, are the first details of the Government’s proposals for the Building Regulations Part L 2013 for England. It was announced on the 30th of July that new versions of the regulations will come into force in April 2014. We have produced a Special report on changes to Part L 2013 to [...]

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Aircrete block supply chain challenges

Aircrete concrete blocks are often at the centre of fabric energy efficiency strategies and a crucial part of the specification for Part L and Code for Sustainable Homes (Code) compliance.  This summer has seen a significant shortage of certain types of aircrete blocks with many buyers attempting to overcome the supply chain issue by sourcing [...]

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Analysis of air pressure test results

We have carried out analysis of 500 air pressure tests results. The chart below demonstrates that our clients are now comfortably achieving air leakage results below 5m3/hm2 at 50Pa. And whilst setting design air leakage rates of less than 4m3/hm2 at 50Pa is not yet the preferred choice for larger projects, such results are certainly achievable [...]

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What might a delay of the new Part L mean for London Plan Policy?

New guidance for Part L of the Building Regulations is late, and there are mounting industry concerns that the next version of the Regulations may not come into force until April 2014.  A delay will have knock-on effects for any planning policies predicated on the Government’s zero carbon homes timetable. An example is the London [...]

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Masterplanning for District Heat Networks

The location and timing of the provision of Energy Centres on large multi-phase development sites with district heat networks is complex as there are a number of often competing factors: – Overall capital cost Cash flow Operational efficiency & costs (which influences resident energy costs) Phasing flexibility Matching Energy Centre output to development heat demand [...]

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Ventilating dwellings in noise exposed areas

Developers must carefully consider the technical impacts of any planning requirements which preclude the use of openable windows in residential developments.  The limited technical solutions currently available mean that any such requirements will severely constrain the ventilation strategy and have a direct impact on Part L1A CO2 compliance. Where planning requirements for developments in areas [...]

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We extend our work on Europe’s largest regeneration project

Hampton House – Nine Elms Following our work through the planning process, Richard Hodkinson Consultancy has recently been appointed to continue involvement on this high-quality mixed-use scheme.  We are to provide a range of environmental assessments through the design and build program. The Nine Elms project, on the south bank of the Thames, is the [...]

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The Benefits of Dynamic Simulation Energy Modelling at Concept Design Stage

A recent dynamic simulation exercise for a client has highlighted the importance of early consideration of a “joined-up” building services and fabric strategy. This ensures an optimised heating solution delivers comfort and acceptable running costs. The use of our dynamic simulation energy modelling software greatly improved the accuracy of this process over standard SBEM compliance [...]

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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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Improving thermal bridging for a mid-floor apartment: a case study

Undertaking Part L 2010 assessment over multiple projects has taught us that it can be difficult to take advantage of improved ‘thermal bridges’ for some building types. For most dwelling types, Accredited Construction Details (ACDs) should provide a 50% reduction in thermal bridging heat loss compared to the SAP worst case.  However, we have found [...]

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Winners of Southwark Council competition tender for Elmington sites C, D, E & G

Richard Hodkinson Consultancy have assisted Bellway Homes and Family Mosaic in being selected as The London Borough of Southwark’s development partner for the four phases at Elmington Sites C, D, E & G. The project will form part of the on-going comprehensive regeneration of the Elmington Estate, by providing 226 dwellings, in an approach that [...]

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Window lintels and Part L

We have undertaken a desktop study to test the significance of lintel performance on the outcome of Part L assessment. The study was based on the 2010 version of the Building Regulations for new homes. We conclude that selecting lintels with a view to their thermal performance can be of real advantage to designers seeking [...]

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Assessment of thermal mass gives Part L 2010 advantage

A review of the treatment of thermal mass under Building Regulations Part L1a suggests that, rather than relying on default assumptions, there is an advantage to be gained by undertaking an individual dwelling assessment. The results of a thermal mass parameter assessment are similar for a range of house types on the same development. This [...]

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Lighting design for Part L Compliance

Addressing the energy demand and associated CO2 emissions from lighting is a key element in complying with Part L of the Building Regulations (2010). Good lighting design is fundamental to cost-effectively meeting the standards. Furthermore, there are added benefits of a good lighting design in terms of occupant comfort and potentially lower running costs. Good [...]

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Electric heating for Code for Sustainable Homes level 4

The 25% dwelling emission rate (DER) improvement over Part L1A 2010 CO2 standards required for Code for Sustainable Homes Level 4 compliance is being achievable via multiple routes. These have focussed on the use of decentralised energy, heat pump technology, or high efficiency gas boilers, with further CO2 reductions through the use of renewable technologies. [...]

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