Analytical Design of Ribbed Flat Slabs

These trees We remarked in March that an arboriculturist friend considered that oak trees in this country were regenerating satisfactorily and their conservation was not at risk. That comment was engendered by a correspondent's concern over the felling of six oak trees; since then we have heard that some experts are seriously concerned about the possible invasion of oak wilt which is endemic in America and which can be carried in the American oak sapwood imported into this country for its highly decorative value. The disease apparently spreads with great rapidity and, like Dutch elm disease, there is no treatment for it. The suggested precaution is to ban the importation of American oak wood. Verulam

The authors have, for 'many years, been involved in leading multidisciplinary engineering groups, working on the design of buildings with other firms of architects and quantity surveyors. This paper reviews the experience gained by examining the different stages of the design process and commenting on the lessons learned by working in this way. This review is illustrated by referring to some relevant projects. The paper concludes by suggesting that much can be done to encourage effective interdisciplinary collaboration by means of training and by improving the ways in which the 'normal duties' of the building design professions relate to each other. J.N. Martin, R.F. Emmerson and J.S.A. Berry

Mr. M. G. Stevens: The layout and load capacity of a typical king pile is given in Fig 1.