Synopsis Buckling of Steel Latticed Struct by Professor P. C. Varghese and C. Ganapathy Chettiar

Mr. R. E. Landau (F): The researches referred to in this valuable paper are relevant to the design of retaining walls and bridge abutments, which have 'flexural corners' at the junction of stem and base. Three cases may be considered.

Mr. Williams in introducing his paper quoted from an unpublished illustrated report on the first submerged tube tunnel under the River Thames at Rotherhithe which it was proposed to build in 1811 but was later abandoned because of differences among its promoters.

We have read the letter that appeared in The Structural Engineer, Vol. 5 0 , No. 1, January 1972, p. 28, with some surprise and not a little interest. Since this Company originated the idea and production of permanent woodwool formwork units in 1959, something like 2 x 106 yd2 of Spanform formers have been installed in the UK and overseas, and this criticism, to our knowledge, is the first of its kind.