Commercial – Non Dwellings |
Every non-dwelling is required to be tested, with some exceptions: |
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Buildings under 500m2 (gross floor area) may wish to accept a poor default value of 15m3/h/m2. (There will be a cost somewhere else in the process to pay for this trade off) |
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Factory made modular buildings may prove their performance using an independent approved test body to conduct test programmes both in the factory and on site. |
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Large and / or complex buildings will sometimes find it impossible to test and will therefore need to engage an idependent person to undertake a detailed programme of design development, component testing and site supervision to provide the necessary confidence. |
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All extensions to existing non-dwellings are treated as for new build, providing they are:
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Greater than 100m2 (gross floor area) |
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Greater than 25% of the total useful floor area. |
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| more information |
