Long-term Deformation Characteristics of Lytag Lightweight-aggregate Concrete

The Craigellachie bridge, over the River Spey at Craigellachie, Banffshire, was originally designed and constructed in cast iron by Thomas Telford in 1814-15. It was reconstructed in 1963-64 to make it capable of carrying modern traffic not greater than 14 tons the bridge, it was essential to keep as much of the original character in weight. In addition, it was recognized that, in reconstructing as possible; when a new bridge is constructed nearby, the cast-iron bridge is to be restored to a condition which will enable it to be retained for as long as possible as a monument to Thomas Telford and his work. W.W. Lowson

The Joint Building Group was formed in 1963 and exists to improve efficiency within the building and construction industry by promoting interprofessional discussion on common problems.

Mr. Peter Dunican, introducing his paper, said that the title ‘ The art of structural engineering ’ had been chosen quite deliberately because, although it was a matter which he might not be able to pronounce upon too clearly, it was a subject which as a practising structural engineer he ought to know something about.