R-value (insulation) typical straw bale houses have very thick walls and thus are well insulated. Snow is roughly R-1 per inch. Brick has a very poor insulating ability at a mere R-0.2 per inch; however it does have a relatively good thermal mass. Note that the above examples all use the U.S. (non-SI) definition for R-value. When determining the overall thermal resistance of a building assembly such as a wall or roof, the insulating effect of the surface air film is added to the thermal resistance of the other materials. In practice the above surface values are used for floors, ceilings, and
Building and Construction Authority build up a skilled workforce, adopt more advanced construction technologies, and enhance building capability in niche areas. BCA strongly promotes the adoption of Building Information Modelling (BIM), which allows professionals to work on a building project digitally before it is built. BCA targets to get 80 per cent of the industry to use BIM widely by 2015, and is working with the public sector to take the lead in driving greater BIM adoptiont. Building and Construction Authority The Building and Construction Authority (Abbreviation: BCA; ) is a statutory board under the Ministry of National Development of the Singapore Government. It