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Approved Document L2B
häftad,
2014,
Engelska,
ISBN 9781859465134
Building Regulations Part L: Approved Document L1B (2013 edition, effective 6 April 2014) requires a 25% improvement over 2006 standards for every new home. An aggregate approach …
Approved Document L1B
häftad,
2014,
Engelska,
ISBN 9781859465110
Building Regulations Part L: Approved Document L1B Conservation of fuel and power in existing dwellings (2013 edition, effective 6 April 2014) requires a 25% improvement 2006 …