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To the EDITOR of The Structural Engineer. SIR,-In your March issue was published an interesting letter from Mr. Ewart S. Andrews dealing with a problem in connection with retaining wall design, which although frequently arising, in practice is not adequately dealt with in text books.
Mr. H. W. BRINKWORTH, referring to Fig. 1, drew attention to the statement (in the top right-hand corner) that the curve for Fidler’s formula (a) was worked to a stress of 20 tons per sq. in., and thc curve for Fidler’s formula (b) to 25 tons per sq. in. He asked if those figures should be reversed, because he could not quite understand why the curve was lower at the bigger ultimate stress.
STRUCTURAL engineering is a term or title often incorrectly interpreted. There was a tendency at one time to use it in particular reference to static structures in steel and reinforced concrete, because, with the growth of these forms of construction, specialisation of production and of professional services in connection therewith, became distinctive, particularly in relation to building. F.E. Drury