3. Research Results on Autoclaved Aerated Concrete Block

Cracking in a prestressed bridge There have been a number of letters responding to the request made by Mr A. Y. Qaraqish in July for advice on the likely cause and effect of longitudinal cracking in a prestressed concrete bridge deck, which form part of a motorway system in Saudi Arabia. Verulam

The scope of research on the resktance of masonry to lateral loading is outlined up to the assessment and publication of BS 5628 in 1978. Subsequent research aimed to consolidate the basis of codification, provide improved confidence in key areas, and afford an understanding of continuing developments and any problems arking. A diversity of future changes may be expected to generate a continuing demand for research. J.F.A. Moore

The ‘viewpoint’ articles published in The Structural Engineer over the last few months have been concerned with Codes of Practice. In all, there are references to the rival views concerning CP114 and CP110. I would like to add a few comments of my own. M.J. Ryall