The Implications of the Report of the Inquiry into the Collapse of Flats at Ronan Point , Canning To

THE Institution's Shear Study Group, which began its meetings in March 1965, was given the following terms of reference: 'To consider the available information on shear in concrete in various scientific papers and foreign Codes, to decide what further tests are required, and to put forward suggestions for a research programme which will eventually enable a relationship to be established between design formulae and the various modes of failure that can occur.' Professor A.L.L. Baker, C.W. Yu and P.E. Regan

This month's letters include discussion over design checks and suitably experienced engineers as well as seismic design of masonry and more.

The tragedy of the Francis Scott Key Bridge highlights the need for structural engineers to ensure that the risks inherent in our built infrastructure remain acceptable, argues Colin Caprani.