This part of BS 5628 gives recommendations for the structural design of reinforced and prestressed masonry constructed of brick or block masonry or masonry of square dressed natural stone.
NOTE 1 The partial safety factors given in this code are based on the assumption that the special category of construction
control (see 3.1) will be specified by the designer. If this is considered to be impracticable, higher partial safety factors should be used.
NOTE 2 The dimensions of a member determined from strength considerations may not always be sufficient to satisfy requirements for other properties of the member such as resistance to fire and thermal insulation, and reference should be made to other appropriate standards.