Two-Phase Materials with Particular Reference to Glass Reinforced Plastics

This paper presents a method of determining influence lines involving the use of Muller-Breslau's principle and the direct distribution of deformation. The method is applicable, generally, to continuous beams, symmetrical or unsymmetrical frames, and structures with prismatic or non-prismatic members. Alan Williams

At the meeting a number of members contributed to a discussion on Dr. Plowman's paper and their comments were recorded by the Institution's shorthand writer, Mr. A. R. Purchase, whose death was announced a day or two later. Despite many efforts it has proved impossible to transcribe Mr. Purchase's notes. The written contributions to the discussion are published below, with Dr. Plowman's replies. The Institution offers its apologies to Dr. Plowman and to those members who spoke at the meeting for the fact that publication of the full discussion is impossible.

The Chairman, opening the discussion, said that the Institution had received an interesting letter from Sir Edwin McAlpine, parts of which were pertinent to the discussion and which he would read. Sir Edwin had said that he very much regretted that owing to a previous engagement he was prevented from attending the meeting, but took the opportunity of calling attention to a few of the more unusual aspects of the very large scheme. The letter then continued: ‘ First and foremost, I think some of the problems in foundations on this site gave very good opportunities for improving our knowledge of the use of cylinder piles, for example the special treatment of the retaining wall adjacent to the Kings Scholars’ Pond Sewer. Secondly, the decision to use a dewatering system instead of steel sheet piling for the pile cap raft supporting Block A, which resulted in a saving in time and money and also eliminating the troubles of noise nuisance which are engendered by driving steel sheet piling in an area such as this.‘