# Groups of Piles Under Mono-Planar Forces. Written Discussion on the Paper by L. D. Turzynski, A.M.I.Struct.E.

*Mr. I.L. GULYAS wrote that several logical mistakes appeared to have been made in the mathematical derivation of the equations used by the author. He also commented that using conventional eliminative methods of solution of equations the results arrived at by Mr. Turzynski could be arrived at with half the energy and time required by the methods of vector analysis used by the author. While welcoming the utilization of matrix notation for clarity in the solution of structural problems, it appeared that the author had shot at a sparrow with a cannon when a three millimetre air-gun would have been sufficient.*