classification of construction materials
41Sound transmission class — (or STC) is an integer rating of how well a building partition attenuates airborne sound. In the USA, it is widely used to rate interior partitions, ceilings/floors, doors, windows and exterior wall configurations (see ASTM International… …
42Flammability — DIN4102 Flammability Class B1 Vertical Shaft Furnace at Technische Universität Braunschweig, iBMB, Germany …
43Boron nitride — IUPAC name Boron nitride Identifiers …
44Economy of Morocco — 100 Moroccan dirham Rank 54th Currency Moroccan Dirham (MAD) …
45Rocket engine — RS 68 being tested at NASA s Stennis Space Center. The nearly transparent exhaust is due to this engine s exhaust being mostly superheated steam (water vapor from its propellants, hydrogen and oxygen) …
46Yacht — For other uses, see Yacht (disambiguation). A yacht in Lorient, Bretagne, France A yacht /ˈj …
47Phase Change Material — A phase change material (PCM) is a substance with a high heat of fusion which, melting and solidifying at a certain temperature, is capable of storing and releasing large amounts of energy. Heat is absorbed or released when the material changes… …
48Team Fortress 2 — The box art for the standalone PC version of Te …
49Formaldehyde — For other uses, see Formaldehyde (disambiguation). Formaldehyde …
50I-35W Mississippi River bridge — This article is about the bridge that collapsed in 2007. For the replacement bridge, see I 35W Saint Anthony Falls Bridge. Mississippi River Bridge …
