Conservation of fuel and power: Approved Document L, Volume 2 — Buildings other than dwellings

R24-27C O N L I N E V E R S I O N Modular and portable buildings with a planned service life of more than two years 2.11 Placing an existing module on a new site is considered by the Building Regulations to be the construction of a new building. 2.12 Special considerations apply to modular and portable buildings with a planned service life of more than two years. a. For modular and portable buildings at a single location, follow paragraphs 2.13 to 2.15. b. For modular and portable buildings intended for use at more than one location, for example under hire agreements, follow paragraphs 2.16 to 2.19. At a single location 2.13 Modular and portable buildings with a planned service life of more than two years at a single location should be shown to comply with the energy efficiency requirements. 2.14 If more than 70% of the external envelope of this type of building will be created from sub- assemblies manufactured before the date when this approved document came into force, the target primary energy rate and target emission rate should be multiplied by the relevant factors from Table 2.2. NOTE: One way of demonstrating the date of manufacture of each sub-assembly is by relating the serial number to the manufacturer’s records. 2.15 After initial manufacture, any work on a module should meet the standards in this document, treating it as work on an existing building. Fabric elements that will be refurbished or replaced in modular sub-assemblies should meet the minimum standards given in Section 4. Fixed building services elements that will be replaced in modular sub-assemblies should meet the minimum standards in Sections 5 and 6. Table 2.2 T arget primary energy rate and target emission rate multiplying factors for modular and portable buildings with a service life of more than two years at a single location Date of manufacture of 70% of modules Target primary energy rate Target emission rate making up the external envelope multiplying factor multiplying factor After the coming into force date 1.00 1.00 6 April 2014 – coming into force date 1.30 1.30 1 Oct 2010 – 5 April 2014 1.40 1.40 6 April 2006 – 30 Sept 2010 1.67 1.67 Pre 6 April 2006 1.67 1.67 At more than one location 2.16 Modular and portable buildings with a planned service life of more than two years but with an intended time of use in a single location of less than two years should be shown to comply with the energy efficiency requirements. An example of this type of building would be a modular or portable building intended for short term hire to multiple locations. NOTE: An example of evidence that the planned time of use in the given location is less than two years is the hire agreement for the unit. 14 Approved Document L Volume 2, 2021 edition Building Regulations 2010 O N L I N E V E R S I O N