... Specification for SI units and recommendations for the use of their multiples and of certain other units1).BS 63 99, Loading for buildings.BS 63 99-1 ,Code of practice for dead and imposed loads.BS 63 99-2, ... new Part to BS 63 99 (formerly CP 3: Chapter V).Imposed roof loads were previously included in BS 63 99-1. This new Part of BS6399 now gives more information on imposed roof loads and in particular ... loads.CP 3, Code of basic data for the design of buildings1).CP 3: Chapter V, Loading.ISO 3898, Bases for design of structures — Notations — General symbols1).ISO 4355, Bases for design of structures...