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The Structural Engineer

Connections incorporating a single, ‘kidney-shaped‘ slot are commonly used for relatively lightly loading bracing connections, although no design rules for their capacity exist. This Technical Note describes a testing programme to investigate the capacity of such details, undertaken as part of the CIMsteel project, and presents the design rules derived from the tests. David Brown

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The Structural Engineer

Ductility is required in composite joints to enable redistribution of moment to occur. This may be provided through yielding of the slab reinforcement and slip of the shear connection. As the reinforcement may eventually fracture, a calculation method is needed to determine the joint rotation corresponding to this failure mode. This paper describes such a method. Comparisons with test results show good agreement. The proposed model can also be used to predict rotation capacity limited by slip due to partial shear connection. Professor D. Anderson, Professor J.M. Aribert, Professor H. Bode and H.J. Kronenburger

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The Structural Engineer

The need for legislation is not new. Moses recognised the need for environmental legislation over 3400 years ago by including a brief reference in the Mosaic Law that instructed the Israelites to avoid polluting and defiling the land. Roger Johnson

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The Structural Engineer

The UK Government is pressing for a large increase in house construction. At the time of writing, the target is of the order of 5M new dwellings in the next 20 years. The crucial question is: how will they be built? Professor J.M. Davies

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The Structural Engineer

Shear in Concrete Dr Satish Desai adds further comment to Professor Paul Regan’s contribution to the above topic (7 December 1999): In my earlier contribution of 3 August, I had emphasised that rules in different Codes must be used as independent packages and not mixed. I wish to demonstrate this concept with a brief comparison between the BS 8110 rule and the latest EC 2 draft rule, as shown below, which may also address some of the concerns expressed by Professor Regan. (The new EC 2 rule is quite different to the rule given in the ENV stage Eurocode.)

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