Correspondence. Elementary Beam Theory

REINFORCED concrete structures are in many cases so redundant that a complete mathematical design is impossible and certain assumptions are made to simplify procedure. W.T. Marshall

It can be said that structural steelwork is the same whether produced for normal uses or for railway work, but railway work presents very definite problems and difficulties which I hope this paper will show. J.S. Campbell

This month's letters cover legislation for design checks, embodied carbon of modular construction approaches, and assessment of masonry buildings for earthquake resilience in New Zealand.