Essential data on construction materials for practising builders, building service engineers, civil and structural engineers, surveyors and architects, in convenient pocket book format. The number of materials and combinations of materials used in construction is not known but is considerable. This Pocket Book aims to provide readily accessible data for about 50 of the most widely used materials and gives guidance on how to access additional information. The type of data provided includes chemical, mechanical and physical properties together with appropriate guidance on dimensional stability and durability. Advice is given on the correct and safe use of materials and the pitfalls to avoid to achieve satisfactory results.