Open Discussion on Learn to Live Without CP 114 by D.D. Matthews

Limit state design Mr M. J. Fothergill writes: Mr Skinner, in the February 1981 issue, raised the topic of limit state design once more, and made a very important point which I felt could have been developed more strongly, instead of diverting into a discussion of the relative merits of CP 114 and CP 110. Verulam

The paper reviews the evolution of structures in unity with architecture in ancient Greece, to the growth of science and engineering during the I7th, 18th, and 19th centuries, which progressively divided architecture and engineering at a time when philosophers such as Kant were arguing for the recognition of aesthetics as equal to reason. T. Harley-Haddow

The current position concerning analysis of fastener groups subject to eccentric shear loading is reviewed briefly. Present application of the rigid plate-plastic fastener model is inhibited by the lack of a convenient general solution. A new approach is presented which, by suitable choice of parameters for loading and eccentricity, enables the full practical range of fastener groups to be analysed with minimal tabulation. Accuracy in analysis and effectiveness in design are tested by typical applications. An accuracy within ± 2% may be generally expected from the tables. The choice of parameters accords well with the natural sequence of decisions when designing this class of joint. J.O. Surtees, C.P. Gildersleeve and C.J. Watts