This paper describes the structural work involved in the erection of a reinforced concrete factory at Belfast. The design includes hyperbolic paraboloid and barrel vault shell roofs together with precast concrete members. The paper is presented in two parts. G.S. Millington and J.D. McCaughey
Twenty feet clear headroom is normally required for transit sheds for the Port of London Authority but thirty feet clearance is occasionally needed where mobile cranes are used within the shed. This was the requirement for the new ' L ' Shed at South West India Dock. F.A. Page and E.H. Adams
Dr. Lenczner said, in introducing his paper, that in practice the problem of finding an appropriate value for the constant K1 could be a difficult one and at the time the paper had been written he could see no easy solution to it. Since then, however, it had occurred to him that, provided one could establish a correct value for Janssen’s K in the static condition one could use it to obtain K1, since there was a simple relation between them which could be obtained as follows.
Mr. Kent, introducing the panel, stated on their behalf that they were present not in the capacity of experts but in order to lead the discussion. He reminded the meeting of the terms of reference set out in the January issue of The Structural Engineer. By ‘ control ’ they meant both the regulations themselves and the enforcement of them. It was hoped to keep the discussion on general lines and not to deviate on to points of detail. Nor did they wish to make any detailed comparisons between the LCC Regulations and the Model By-Laws. A number of people had asked to be permitted to speak and Mr. Kent invited them to contribute first of all, calling upon Mr. Ranger to open the discussion.
Dr. Neil Jackson (Queen's College, Dundee) writes:- 'Dr. Imegwu's analytical approach is a useful contribution but his method requires further clarification if incorrect solutions are to be clearly recognized. Dr. Imegwu has commented briefly on this in section 8 of his paper.'
Mr. T. G. Kowalski writes:- 'The author is to be congratulated on shedding a valuable first light on the problem of creep in glued joints between precast concrete segments. Further the Institution is to be commended for accepting this paper dealing with a vital, new, structural jointing medium. I hope it will be the first in a long series on similar topics. Having been modestly connected with two specific projects, which involved structural adhesives, I should like to comment briefly.'
The paper describes an approximate method for the direct stress analysis of orthotropic skew bridge slabs, without the usual need for intermediate deflexion calculations. A. Coull