Article Abstract:
There have been concerns about the effects on health of living in tightly sealed buildings. Many architects have sought alternative forms of construction combining energy efficiency and breathability. Dynamic insulation involves the drawing of cold outside air through a porous insulation material, which is then warmed by heath escaping through the construction. Diffusive insulation also involves porous insulation materials allowing pollutant concentrations to be reduced with differential rates of diffusion. Breathing construction is more widely used involving Warmcel insulation made of recycled newspaper.
User Contributions:
Comment about this article or add new information about this topic:
Article Abstract:
The requirement for high floor loadings for offices is often unnecessary. It is assumed that floor loading of 4 or 5kN/m squared is needed for offices and converting existing buildings to this standard can damage the existing fabric. However, surveys show office loadings have two parts. Firstly, the general load of people and their office equipment which has changed little over time and imposes only a load of about 1kN/m squared. Secondly, high load areas for machinery or files that may need 10kN/m squared. This type of load is best accommodated in basement areas.
User Contributions:
Comment about this article or add new information about this topic:
Article Abstract:
Solid masonry walls may be better than cavity walls. Walls were traditionally built of stone or dried clay with bricks coming into use from the 15th century. Cavity walls with damp-proof courses were first built in the 19th century and are now the dominant type. However, solid masonry may be better. Thermal insulation has now to be added to almost all walls, problems have arisen with cavity construction and cavity brick has a boring appearance. There are three types of masonry wall designed to resist driving rain: the 'raincoat', the cavity and the 'overcoat.'
User Contributions:
Comment about this article or add new information about this topic: