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Cross-section of a closed thin-walled beam. A thin walled beam is a type of beam that does not have a solid cross sectional area. The cross section of a thin walled beam is made up from thin panels connected together.
Prestressed concrete is a form of concrete used in construction. It is substantially prestressed during production, in a manner that strengthens it against tensile forces which will exist when in service.
[3] Béton brut became popular among modern architects, leading to the appreciation of the brutalist architecture style, which thrived in the 1950s–1970s. Brutalism stems from the philosophies of modern architecture that promote the truth to materials, which is achieved by their raw expression. [ 4 ]
Thin wall injection molding is a specialized form of conventional injection molding that focuses on mass-producing plastic parts that are thin and light so that material cost savings can be made and cycle times can be as short as possible.
FMT is a raceway, but not a conduit and is described in a separate NEC Article 360. It only comes in 1/2" & 3/4" trade sizes, whereas FMC is sized 1/2" ~ 4" trade sizes. NEC 360.2 describes it as: "A raceway that is circular in cross section, flexible, metallic and liquidtight without a nonmetallic jacket."