Design and Detailing of Structural Concrete Using Strut-and-Tie Models

Flatness and tolerances in HSFG bolted connections Mr J. Renshaw of Sale, Cheshire, raises the question of tolerances in HSFG bolted connections within the context of overall construction tolerances for steel frames: Questions have arisen recently relating to the fit of welded endplates when employing high strength friction grip bolts to develop fixed ended joints. The questions are, what are the flatness tolerances for the endplate and what is the maximum gap which can be tolerated between the contact surfaces? Each of these questions, taken at face value, seems very innocent and simple to answer but, when given some thought, they are not as innocuous and simple as one might think. Verulam

The paper describes tests carried out on tall cantilever retaining walls of post- tensioned brick diaphragm wall construction. The results show that such walls have very high resistance to lateral loading and thus offer the designer an alternative solution. W.G. Curtin and J. Howard

Dr. M. A. Abdul-Salam (Damascus University, Syria) The paper describes carefully designed experiments on low levels of connection, gives the major results, and points out the major conclusions. Few hints are necessary to help in understanding the experimental results. Besides, a comparison with earlier experimental work might be useful in drawing conclusions to be used in the new draft Code’s methods of design. Verulam