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How to deal with corridors under Part L1A (and IES software approved)

by Mel Starrs on December 20, 2006

in Part L

Additional guidance has been published on the NCM FAQ’s page regarding how to deal with shared spaces within blocks of flats using iSBEM:

Each flat is a separate dwelling and must be assessed using SAP (the relevant guidance is in ADL1A). However, the common areas in the flats are not classified as dwellings. As stated in ADL1A paragraph 14, the appropriate approach to compliance depends on whether the common areas are heated or unheated. If they are heated, the guidance in ADL2 should be applied using SBEM. If they are unheated, reasonable provision would be to provide fabric elements that meet the fabric standards set out in paragraphs 33 to 36 of ADL1A. 

A new activity will be added to the activity database in a future version of iSBEM for these areas. For now, please select Building type ‘Hotel’ and activity ‘Circulation area (corridors and stairways)’. This activity has no DHW demand associated with it. It is still necessary to assign a DHW generator to these areas, this will not cause any problems in the project because the generator will not be used where there is no DHW demand. The default DHW generator should be used in this case, if gas is not available in the building, the DHW fuel should be changed to any fuel other than natural gas.

In related new, IES have announced that their SAP 2005 and SBEM packages have been approved by DCLG. Version 5.6.1 was released yesterday:

IES are the only provider that can now offer approved software for all of the possible CO2 calculation methods allowed under Part L:

·               SAP 2005 (L1A)
·               Dynamic Thermal Simulation (L2A)
·               SBEM (L2A)