An Analysis of the Bending and Shearing Forces on Circular and Rectangular Reinforced Hollow Concret

THE discovery and use of asphalt dates from the remotest ages. D'Eyrinis, who discovered the Val de Travers mine, and published a work on the subject in 1721, held that Noah's Ark was coated, and the Tower of Babel cemented, with it. He based his assertion on the proximity of the deposit at Siddim. L.A. Simmons

Foreword by PHILIP MOON, M.Inst.C.E. (Engineer and General Manager to the Bournemouth Gas and Water Company).The new gasworks at Poole-the ferro-concrete structures of which are described by Mr. Hale in the following paper-were rendered necessary by the continued and rapid development of the extensive area served by the Bournemouth Gas & Water Company. How rapid this development has been can be gathered from the following particulars with regard to the output of gas :- Year. Output of Gas. 1903 ... ... 537,819,000 cubic feet. 1914 ... ... 1,114,806,000 ,, ,, 1928 . . . . . . 2,468,504,000 ,, ,, 1930 . . . . . . 2,652,022,000 , , , , H.M. Hale

THE object of this paper is an attempt to overcome an unnecessary and irritating difficulty in connection with the design of steel pillars. This difficulty is due to the fact that within recent years the permissible working stresses have been and still are frequently altered, with the result that tables of safe loads on pillars are soon rendered obsolete and require to be recalculated, and, since the “straight line graphs” originally included in the London County Council General Powers Act of 1909 have been superseded in the London County Council Code of Practice of 1932 by a “curved graph” with a further complication of a permissible increase of stress in the case of eccentric loading, the preparation of such tables has become a laborious and thankless task. W. Cyril Cocking