Abstract: The evolution of roofing systems has been largely influenced by the requirements for control of rain penetration, but in modern roof design other sources and effects of moisture must be considered. This Digest discusses the principles involved and their application to conventional designs.
Abstract: To achieve successful and durable bituminous waterproof membranes the designer must consider the properties and behaviour of both bitumen and reinforcement, the nature and behaviour of the surface to which it is applied, and the conditions of exposure or properties of the environment in which it must serve. The composite membrane has certain desirable properties, but is subject to several mechanisms of deterioration that can be allowed for or guarded against by design. The protection or shading of a membrane from solar radiation (CBD 65) has great value in extending its life, as does provision for drainage and the avoidance of trapped moisture. In some cases the occurrence of membrane failure can be prevented by a planned program of periodic maintenance. The manner of installation and quality of workmanship, however, are of fundamental importance to the performance of bituminous membranes.
Abstract: This Digest describes the main components of coatings, particularly pigmented coatings, and their functions. The general properties required of non-volatile materials, i.e., pigment and binder, are discussed.
Abstract: Supplement No. 7 to the National Building Code of Canada presents design requirements for rendering buildings convenient for use by handicapped citizens, of whom there are at least half a million now in Canada.
Abstract: Coatings are categorized as water-based or solvent-based and the properties inherent in each are discussed. The subdivisions of the two main groups are described and their properties are related to composition.
Abstract: Calculating the loads to be transmitted to the ground and determining exactly site ground conditions are essential preliminaries to the actual design of building foundations. The main types of foundation structures are reviewed in this context.
Subject: foundations; bearing capacity; floating foundations; spread footings; Basements and foundations : Selecting the foundation
Canadian Building Digest; no. CBD-81, ISSN: 0008-3097, Publication date: 1966-09
Abstract: Water exists in some form beneath almost the entire surface of the earth. Water at the bottom of wells or as it appears in springs is evidence of the existence of this " groundwater." Principles governing its occurrence and control during construction are outlined.
Abstract: Comfort conditions for the users of indoor swimming pool rooms are discussed establishing the thermal and moisture conditions to be expected in these spaces. The implications of these conditions and their effects upon the building fabric are discussed with some suggestions for the design of trouble-free enclosures being offered.
Abstract: Movements in shallow foundations may occur due to volume changes in underlying clay that result from drying or wetting of the clay. With proper appreciation of the causes of these problems, foundations can be designed to eliminate damage resulting from differential movements.