SBEM Calculations: Building regulations Part L (Conservation of Fuel & Power)
From April 2006 all commercial new-build properties and some extensions need an SBEM Calculation to comply with Part L Building Regulations. Part L2A is for assessing new-build non-domestic buildings and part L2B is for existing buildings. Extensions to existing properties are assessed under Part L2A. There are two stage to the process, first at the design stage, which demonstrates that the building as designed will comply, and then when the building is completed a second report confirming that the actual measured performance agrees.
From your drawings and specifications we will produce a calculation of the CO2 emissions of the building using approved software, which you then submit with your Building Control Application. We will let you know exactly what you need to provide for us to produce the report. The calculation shows the relationship between the Target Emission Rate (TER) and the Building Emission Rate (BER). The design must equal or better the target figure to comply.
All buildings are subject to air tightness testing to show that the assumptions used in the design stage energy calculations have been achieved. Building Control also now require post-construction verification that metering is installed, building services are fully commissioned and a building Log Book has been prepared.