fire-resistant insulation
21Transformer — This article is about the electrical device. For the toy line franchise, see Transformers. For other uses, see Transformer (disambiguation). Pole mounted distribution transformer with center tapped secondary winding. This type of transformer is… …
22Rigid Panels — Rigid panel insulation is made from fibrous materials (fiberglass, rock and slag wool) or from plastic foam. They are sometimes sold in sections designed to fit tightly in standard wall cavities. When sold this way, they are called batts , and… …
23Copper wire and cable — Copper has been used in electric wiring since the invention of the electromagnet and the telegraph in the 1820s.[1][2] The invention of the telephone in 1876 proved to be another early boon for copper wire.[3] Today, despite competition from… …
24Mica — For other uses, see Mica (disambiguation). Rock with mica …
25Duct (HVAC) — A round galvanized steel duct connecting to a typical diffuser Fire resistance rated …
26Safe — A safe (also called strongbox, coffer or kist) is a secure lockable box used for securing valuable objects against theft or damage. A safe is usually a hollow cuboid or cylinder, with one face removable or hinged to form a door. The body and door …
27Transformer types — Circuit symbols Transformer with two windings and iron core. Step down or step up transformer. The symbol shows which winding has more turns, but not usually the …
28Earth sheltering — is the architectural practice of using earth against building walls for external thermal mass, to reduce heat loss, and to easily maintain a steady indoor air temperature. Earth sheltering is popular in modern times among advocates of passive… …
29Firestop — A firestop is a passive fire protection system of various components used to seal openings and joints in fire resistance rated wall and/or floor assemblies, based on fire testing and certification listings. Unprotected openings in fire… …
30fireproofing — /fuyeur prooh fing/, n. 1. the act or process of rendering fireproof. 2. material for use in making anything fireproof. [1865 70; FIREPROOF + ING1] * * * Use of fire resistant materials in a building to prevent structural collapse and allow safe… …
