This guide begins with a broad overview of mill building structures and their development, illustrated with examples of mill construction details. It then moves on to discuss measures that may be needed to ensure compliance with modern Building Regulations. Historical and modern evidence is presented to show that the robustness of these old buildings must be assessed carefully and guidance is given on how robustness may be improved, where necessary.

The constructional features and structural problems found in textile mills are considered in detail, especially where cast iron is the main internal framing material. Research results are given in support of recommendations for the assessment of cast iron beams and columns in mill buildings.