Abstract: This digest discusses the mechanisms and forces involved when snow slides down smooth metal or glass roofs and shows how to compute the forces that sliding snow imposes on chimneys, parapets and snow fences. It also discusses the dangers associated with sliding snow, icicles, ice dams and ice build-up on sidewalks.
Abstract: Infrared thermography is a technology that allows infrared or heat radiation to be transformed into a visible image. It is used in building maintenance to locate and identify areas of heat-loss and to assess the integrity of masonry cladding materials. This digest provides an introduction to infrared theory and its application to building analysis.