Issue 4

A TWO dimensional photoelastic investigation has been carried out to explore the distribution of stress in the end block of a rectangular beam posttensioned by two cables with anchorages symmetrically arranged about the centre line of the end section. S. P. Christodoulides

A BRIEF description is given of the organisation of the coal industry under the National Coal Board development of new and existing mines, foundations with special reference to building on colliery refuse heaps and fillings, architectural design of colliery structures and buildings, headframes and heapstead buildings for drum winders, friction winders, mine ventilation, airlocks. The Koepe system of winding, ground type and overhead winders, colliery buildings, storage bunkers, choice of structural and cladding materials. George P. Bridges

THE new laboratories of the Rutherford College of Technology, Newcastle upon Tyne, are now under construction and, to clear the site, it was necessary to demolish a small house which was, at one time, the residence of the foreman of a builder’s yard. This house has considerable historical significance in the history of reinforced concrete and the opportunity was taken to investigate its construction. Professor W. Fisher Cassie