The paper describes the design and construction of Adhamiyah Bridge over the River Tigris in Baghdad. Of steel construction acting compositely with a concrete deck, the cable-stayed bridge is the first of this type to be erected in the Middle East. D.J. Lee and A. Wallace
The subject of prestressing covers a process that is relatively new and the inventor and chief protagonist of which died only 20 years ago-Eugene Freyssinet. Indeed, the major innovations in prestressed concrete, and the notable structures that have resulted, have come about in the last 40 years or so; the ‘childhood’ will therefore deal only with a short time-span, up to about 20 years ago. F. Walley
The literature dealing with the expansion of concrete due to alkali-silica reaction (ASR) is reviewed and experimental work currently in progress at the Cement & Concrete Association is described. It is shown that concrete containing a reactive aggregate and a UK cement is unlikely to exhibit deleterious expansion due to ASR if the alkali content of the concrete, expressed as equivalent Na20, is less than 4 kg/m3. D.W. Hobbs
Foundations The piers of the main spans are founded on cast in situ cylinders which were constructed in open excavations except at the main tower pier no. 3 where a temporary cofferdam was required. The abutments are founded on precast concrete piles. Ismail. I. Al-Bayah and D.J. Lee
Extract from CP2004 Code of practice for foundations: 7.5 Bearing capacity and test loading 7.5.1 Bearing capacity of a pile. The bearing capacity of a pile is dependent on the size, shape and type of pile and on the properties of the soil in which it is embedded. The ultimate bearing capacity is the load at which the resistance of the soil becomes fully mobilized . . . Dennis Waite
The first 75th Anniversary function held out-of-house was the Thanksgiving Service at Sr. Lawrence Jewry on 24 November 1983, followed by a Reception at the Guildhall. Nearly 300 members and guests attended the Service and heard the follo wing address by Dr. George Geddes, CBE, FEng (Past President)
The Institution accepted a suggestion from the Standing Committee on Structural Safety that guidance on the structural use of chipboard for flooring should be produced which would take into account long-term load effects, deterioration, moisture, misuse, vibration, impact, and local application of load. The Standing Committee pointed out that the properties of chipboard are somewhat different from those of traditional flooring materials in that the critical mode of failure is more likely to be by punching or shear, particularly where there are heavy concentrations of applied load. As the Timber Research & Development Association (TRADA) had, at the same time, requested Government financial assistance to produce a similar document, it was agreed that a joint IStructE/TRADA Working Party should be set up to produce a state-of-the-art report on flooring before the end of 1983.
Timber frame housing The use of timber frame housing still tends to be regarded, in this country, as innovatory, even though more than 500 000 houses have been built using this method during the last 20 years and it is common practice in many other countries. However, it has recently attracted considerable comment by the media, much of it ill-informed. Mr Phillip Reece has now written seeking a better understanding of the practical options open when the alternatives are described simply as brick and timber. He points out that: Verulam