The Design of Steel Frames Discussion on Professor J.F. Baker's Paper

Manholes are constructed on sewers, at all changes of direction, gradient, and size, and in the case of small sewers, say 18 in. diameter and under, at intervals of not more than 360 ft. James Duff

The type of plate to be considered is that whose thickness is small compared with the overall linear dimensions and whose maximum deflection, under the application of load in a direction normal to the plane of the plate, is small compared with the thickness. The example which most frequently occurs is that of a plate bent under the application of uniformly distributed load, and the deflection of any such plate must satisfy the equation... F.A. Gerard

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.