Relatively inexpensive minerals such as trona, sand, and feldspar are used instead of pure chemicals. The mix of raw materials is termed batch. Sodalime glass is divided technically into glass used for windows, called float glass or flat glass, and glass for containers, called container glass.
May 29, 2019· To estimate the framing materials for each window and door opening, use the total width of the opening plus 7 inches. For example, for a 36inch wide door, you need two pieces of 2x12 at 43 inches and one piece of plywood at 11 1/4 inches (the actual width of a 2x12) by 43 inches.