The title of this standard should not be taken to imply that all of the materials quoted are necessarily used solely or even principally in building. This schedule was first published in 1935 as an attempt to provide a solution to the problems which had arisen through structural and other calculations being based on different data for the weights of materials concerned. The 1949 revision was undertaken with a view to making the information more complete by the inclusion of certain extra materials, together with such changes in the data as had been found to be necessary | BRITISH STANDARD BS 648 1964 Incorporating Amendment Nos. 1 and 2 Schedule of Weights of building materials UDC 691 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS 648 1964 Co-operating organizations The committee responsible for the preparation of this British Standard includes representatives from the following organizations Association of Municipal Corporations . Building Research Station District Surveyors Association Institution of Municipal Engineers Institution of Structural Engineers National Federation of Building Trades Employers Royal Institute of British Architects The Royal Institution of Chartered Surveyors This British Standard having been approved by the Building Divisional Council was published under the authority of the General Council on 31 December 1964 Amendments issued since publication BSI 10-1999 Amd. No. Date of issue Comments The following BSI references 105 October 1968 relate to the work on this standard Committee reference B 19 344 October 1969 Indicated by a sideline in the margin Draft for comment D63 9318 ISBN 0 580 00808 8 BS 648 1964 Contents Co-operating organizations Foreword Page Inside front cover 11 Schedule 1 Appendix A Wire and sheet gauges 33 Index 36 BSI 10-1999