The paper describes the principles of cathodic protection (CP); this offers an effective method of inhibiting electrochemical corrosion of the steel reinforcement in concrete and provides an alternative method of treatment for reinforced concrete (RC) structures likely to suffer (or suffering) from corrosion problems in aggressive environments. It also describes methods of controlling and monitoring the eflicacy of installed CP systems and provides two examples of the use of cathodic protection. S.C. Das
Previous papers set the scene for NVQs. No apology need be made for a further article on this subject, as the technical education and training, and the assessment of competence in the workplace, is to be the pattern of the future. This feature accepts the inevitability of the National Vocation structure and seeks to explain and place it in the context of people in training for the 21 st century and a unified Europe. However, it is important at the outset to state what NVQ’s are not: they are not a replacement for the education and training which is vital to a dynamic industry and profession; NVQs bring another dimension of standards of workplace competence. E. Hewitt
Synopsis This paper outlines the design of the structure for an ofice building in the City of London, highlighting two aspects in particular. First, the underpinning of the surrounding party walls using a novel form of construction, to enable two levels of basements to be excavated. The other is the design philosophy for the superstructure which gives the optimum flexibility of column layout for the irregular plan shape, combined with a shallow floor depth which allows a maximum unimpeded depth for services within the 1.0 m overall floor zone. This was achieved by using post-tensioned flat slabs and structural steel columns. F.T. Hodgson
Shear reinforcement at a main bead secondary beam connection On 17 August, Mrs Valentina Brookfield drew attention to this problem as one in which some clarification was required. Professor P. E. Regan elaborates on ways in which he sees the problem being dealt with: Mrs Brookfield is right to draw attention to the need for appropriate detailing of beam-to-beam connections. Verulam