Abstract: This Digest outlines some of the points that need to be considered when using bitumens and felts to form the membranes for flat and moderately sloped roofs. Flash point and softening point temperatures, adhesion, ridging, and moisture are discussed along with some of the points a roofing contractor should remember during roofing operations.
Abstract: Several methods have been used to evaluate the economic performance of investment projects over a period of time. Life-cycle costing (LCC) is one method now being widely used for such an evaluations of building investment projects. The purpose of this Digest is to explain, in general terms, the concept, technique, and assumptionss of LCC. A brief discussion of some of its limitations is also included.
Abstract: This Digest outlines the general properties of plastics used as glazing materials. Properties discussed for several common glazing materials include: optical, impact resistance, light transmission, strength properties, durability and fire behaviour.