This Part of BS 6399 provides dead and minimum recommended imposed loads for use in designing buildings. It applies to:

a) new buildings and new structures;

b) alterations and additions to existing buildings and existing structures;

c) existing construction on change of use.

The principal change in this edition of the standard is the presentation of the imposed floor loads according to the type of activity/occupancy, rather than occupancy class. The weights of movable partitions which were redefined as imposed loads, to retain their classification. The reductions in floor load with number of storeys and with area have also been clarified.