Author: T. Ryan
1st February 2016
First published: 1st February 2016
Standard: £9 + VAT
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In contrast, the need to maintain a balance of moisture and flexibility in the body of an old wall is essential. Ignoring this will lead to the classic error of repointing old structures in brittle, impermeable Portland cement
(OPC) mortar. The mortar provides the route for evaporation from the core and should be more permeable than the brick or stone. To reverse this by sealing the joints with a hard finish can only lead to trouble.
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.
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.
Our built heritage is a finite resource stretching back thousands of years. Protecting and conserving this
heritage is a challenge requiring knowledge, skills and experience, together with an ability to bring practical engineering judgement and often creative and imaginative solutions. This paper sets out the challenges faced by engineers and some of the approaches taken in the appraisal and protection of ruins.