Dynamic Stability of Arches Curved Plates Rings and Pipes Submitted to Periodically Variable Stresse

The literature on the comparative properties of solid and perforated bricks is reviewed. In view of the extensive use of perforated bricks it is surprising that there has been little detailed experimental work comparing ceramically similar bricks with and without perforations. The paper describes an extensive investigation to remedy this deficiency. Bricks covering a wide range of strength and water absorptions were used, together with two mortars. H.W.H. West, H.R. Hodgkinson, D.G. Beech and S.T.E. Davenport

As is customary at the first Ordinary Meeting of the New Year, the meeting of the Institution at 6 o’clock on Thursday 14 January, 1971 will take the form of an open discussion. This year’s theme is a subject of considerable topical interest. All members are invited to bring to the meeting colleagues from the contracting industry from whom contributions to the discussion will be most welcome.

The conditions for the 13th Biennial Competition for the Drury Medal, founded by the late Mr. F. E. Drury (Past President) are now available.