Digest 229 Estimation of thermal and moisture movements and stresses. Part 3
Publication Year
1979
Document Status
Withdrawn
Abstract
Recognition of the location and extent of movements in building materials and components is essential for the satisfactory design of joints and fixings and the prevention of cracking. This is particularly important with regard to long-term performance and the avoidance of excessive maintenance. This digest is intended primarily as a source of data on the physical characteristics of building materials needed to assess their movements, or the stresses resulting from restrained movements, due to changes in temperature and moisture content. It also includes elementary methods for assessing the extent of these effects but does not deal with the practical consequences of movements in particular parts of buildings. It is published in three parts: Part 1 (Digest 227) discusses movements, their sources and design strategies for accommodating them, and the causes of deformation and stress: Part 2 (Digest 228) is an analysis of thermal and moisture effects and includes tabulated data needed to assess the change of size and shape of materials: this part gives guidance on estimating deformations and associated forces and stresses.
Publisher Information
BRE
BRE is a building science centre that generates new knowledge through research. This is used to create products, tools and standards that drive positive change across the built environment. BRE helps its government and private sector clients meet the significant environmental, social and economic challenges they face in delivering homes, buildings and communities. BRE is owned by the BRE Trust, a registered charity. The Trust uses the profits made by the BRE companies to fund research and education that advances knowledge of the built environment.
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