The Effect of Wind Friction on Hyperbolic Cooling Towers

Mr. Bobrowski: Since the speed with which grandstands have to be built is such that it was virtually impossible to obtain up-to-date photographs of Sandown Park and Calgary before publication of the paper it should be useful to supplement the discussion with the following figures:

I was very interested to read the report of the discussion on this subject, and in particular, the reference made to the Forth Road Bridge, since I was deputy resident engineer on that project. B.G. Smith

Research which included tests on 157 cores, 216 cylinders and 244 cubes is described in this paper. The authors recommend a method for equating tests on cores with cube strengths obtained under the standard conditions of manufacture and curing set out in specifications. J.M. Plowman, W.F. Smith and T. Sherriff