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
Trade Unions International of Building, Wood, Building Materials and Allied Industries Trade Unions International of Building, Wood, Building Materials and Allied Industries The Trade Unions International of Building, Wood, Building Materials and Industries, also known as the Trade Unions International of Construction, Wood, Building Materials and Industries, or by its French acronym UITBB ("Union internationale des syndicats des travailleurs du bâtiment, du bois et des matériaux de construction") is a Trade Union International affiliated with the World Federation of Trade Unions. The UITBB was founded at a conference in Milan in 14–16 July 1949. The highest organization is the Conference which meets every 4 years. Between conferences, the union is run