Author: I. Hume (formerly English Heritage) and J. Miller (Ramboll)
1 June 2015
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I. Hume (formerly English Heritage) and J. Miller (Ramboll)
The design of concrete slabs and beams is not generally affected by fire design requirements. However, these can be a governing factor in the sizing of columns, particularly in multi-storey buildings. This article therefore concentrates on the guidance given in Eurocode 2 on the sizing of concrete columns for different fire resistance periods.
Historic buildings and structures, like any other, move to some degree, whether due to thermal effects, changes in moisture levels in the structural fabric, influences on the founding subsoil, or environmental forces. The key question for the conservation engineer is to determine whether the movement is progressive and presents a risk to the structure. This article introduces engineers to the various techniques available to monitor movement in historic structures, from simple manual techniques which are less commonly used today, to sophisticated electronic systems. The form of monitoring will depend on the nature of the assumed movement, the funds available, and the possible consequences if the movement is progressive.
As structural engineering students, we learn about mild steel, modern design and construction methods. However, historic structures often do not fit into this mould. Whether you work in conservation or are a general practitioner, you are likely to come across cast iron, wrought iron, as well as early mild steel structures.