Author: J. Ruddy (CARE & Capstone Consulting Engineers Ltd)
2 November 2015
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J. Ruddy (CARE & Capstone Consulting Engineers Ltd)
Timber Engineering Notebook (TEN) No. 11 and No. 12 provided a detailed introduction to the applications and use of cross-laminated timber (CLT) as a structural timber product, together with information on the manufacture, detailing and erection of CLT constructions. This article presents detailed advice on the material properties and structural design of CLT based on current UK practice.
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.
This article looks at some aspects of floor loading and how its application has changed for the better. It encourages a careful consideration of loadings to avoid unnecessary and irreversible loss of fabric through the application of significant strengthening schemes, cutting away existing historic framing.