Author: Ward, L E
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Ward, L E
The Structural Engineer, Volume 36, Issue 10, 1958
Introduction The expression a p - S = U is used in a method of calculating the equilibrium moisture distribution in soils, where a = a compressibility factor; S = the suction characteristic of the soil; U = the pore water pressure relative to the position of the water-table;and P = the pressure due to the overburden above the zone under consideration. The value p can also include any surface loading n due to a road, runway, or light structure, i.e., p = h Dw, + n, where h = depth from the surface to the centre of the zone: Dw = Dd (100 + m)/ 100 = bulk density of the soil,and Dd is the dry density: m = a value of moisture content assumed as a first approximation (this may be adjusted when the equilibrium moisture contents have been estimated once, by choosing the new value of m to give a better estimate of Dw). E. LL. Morgan
The structural industry was one of the early users of electric arc welding and there are many examples which date back to the 1920’s. Its use increased steadily until the Second World War, but it was during the war and in this post war period that the greatest increase in its application has taken place. It has now become one of the leading methods of fabrication and welded work, as a percentage of the total structural production in this country, rivals all other methods. Indeed, in many structural fields, for example rigid frames and structures designed by the plastic theory, it is now the only method of fabrication in use. J.S. Allen
The Institution welcomes as President for the Session 1958-1959 Mr. G. S. McDonald, M.I.Struct.E., M.I.C.E., M.I.Mun.E., who takes office on the 2nd October.