R-value (insulation) as ASHRAE 90.1 and the IECC prescribe U-values. However, R-value is widely used in practice to describe the thermal resistance of insulation products, layers, and most other parts of the building enclosure (walls, floors, roofs). Other areas of the world more commonly use U-value/U-factor for elements of the entire building enclosure including windows, doors, walls, roof, and ground slabs. The SI (metric) unit of R-value is whereas the I-P (inch-pound) unit is For R-values there is no difference between US customary units and imperial units, so the same I-P unit is used in both. Some sources use ″RSI″ when referring
Royal Commission into the Building and Construction Industry Australian Naval Reserve and conservation and arts organisations." The Commissioner was appointed to investigate certain matters in relation to the building and construction industry. Those matters were defined in the Letters Patent as follows: The powers of Royal Commissions in Australia are set out in the enabling legislation, the . Royal Commissions, appointed pursuant to the "Royal Commissions Act" or otherwise, have powers to issue a summons to a person to appear before the Commission at a hearing to give evidence or to produce documents specified in the summons; require witnesses to take an oath or give an affirmation; and