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The CHAIRMAN (Mr. M. B. Buxton, M.C., M.A., A.M.Inst.C.E., Vice-president) said that Professor Batho needed no introduction to members of the Institution, for his work at Birmingham University was well known, and his name appeared in many scientific reports. This paper on the effect of concrete encasement was of the greatest interest to members.
THE American Concrete Institute has recently published an analysis of the number of rigid frame bridges built during the last decade, and these figures show in a striking fashion the remarkable and steady increase in this type of construction in the United States. In 1926 the number of portal frame bridges built was seven, in 1931 it had risen to 39 per annum, and the number constructed in 1936 was 81. About 70 per cent. of the portal frame bridges since 1922 have been of a single span. W. Fisher Cassie
On 20 July last, under ref. BRA/1068/2, the DOE addressed the letter given below to local authorities, new town development corporations, etc. The letter contains an assessment of the BRE Report on the failure of roof beams at Sir John Cass's Foundation and Red Coat Church of England Secondary School, Stepney, and sets out a programme of action for inspection and assessment. Attached to the letter was an annex 'Suggestions for testing high alumina cement concrete' which is published on page 326.