typical floor
91Gymnastics — This article is about the general sport. For a specific form of gymnastics, see Gymnastics (disambiguation). Gymnastics is a sport involving performance of exercises requiring physical strength, flexibility, agility, coordination, and balance.… …
92Castle — This article is about medieval fortifications. For other uses, see Castle (disambiguation). For a list of all castles, see List of castles. For similar but unrelated structures in Japan, see Japanese castle …
93Fire sprinkler system — A fire sprinkler system is an active fire protection measure, consisting of a water supply, providing adequate pressure and flowrate to a water distribution piping system, onto which fire sprinklers are connected. Although historically only used… …
94Milling machine — For the machine used in road construction, see Asphalt milling machine. Not to be confused with mill (grinding). Example of a bridge type CNC vertical milling center …
95Strip club — Exterior photograph of a strip club advertising full nude entertainment (Cheetahs, in San Diego, California USA). A strip club is an adult entertainment venue in which striptease or other erotic or exotic dance is regularly performed. Strip clubs …
96Containment building — NRC drawing of containment building. A containment building, in its most common usage, is a steel or reinforced concrete structure enclosing a nuclear reactor. It is designed, in any emergency, to contain the escape of radiation to a maximum… …
97Architecture of Portugal — refers to the architecture practised in the territory of present day Portugal since before the foundation of the country, in the 12th century. The term may also refer to buildings created under Portuguese influence or by Portuguese architects… …
98Mechanical fan — Household electric box fan with a propeller style blade A mechanical fan is a machine used to create flow within a fluid, typically a gas such as air. A fan consists of a rotating arrangement of vanes or blades which act on the air. Usually, it… …
99Central vacuum cleaner — The power unit of a typical central vacuum cleaner for residential use A central vacuum cleaner (also known as built in or ducted) is a type of vacuum cleaner appliance, installed into a building as a semi permanent fixture. Central vacuum… …
100Plate tectonics — The tectonic plates of the world were mapped in the second half of the 20th century …
