Structural Engineering in Railway Work with Special Reference to Steelwork

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

Sir, I owe an apology for the undue compression of my letter on- the above subject in the July issue of the STRUCTURAL ENGINEER. The reason was that I was uncertain whether the point was novel or not. It seems from Mr. Cornish’s letter in the current issue-for which I am obliged-that it is novel. I would therefore like to set out the argument in more detail, taking a rather different line of approach.