Viewpoint: Since when did we need different factors for dead and live loads?

This month's letters scrutinise the President's views on site supervision, raise some interesting questions in the aftermath of the Grenfell Tower fire, discuss the benefits and drawbacks of BIM, as well as commenting on concrete design to the Eurocodes and British Standards, fracking and various other topics.

Balazs Trojak challenges BIM refuseniks to dip their toe in the water and explore its benefits, or risk irrelevance in an increasingly digital future.

This month, Hugh Morrison MIStructE poses a question on bending and deflection for a steel floor beam.