- Permissible stress design
Permissible stress design (in USA construction more commonly called allowable strength design) is a design philosophy used by
civil engineers. The designer ensures that the stresses developed in a structure due to service loads do not exceed the elastic limit. This limit is usually determined by ensuring that stresses remain within the limits through the use of factors of safety.
The permissible stress design approach has generally been replaced internationally by
limit state design(also known as ultimate stress design, or in USA, Load and Resistance Factor Design, LRFD) as far as structural engineeringis considered, except for some isolated cases.
In USA construction, allowable strength design (ASD) has not yet been completely superseded by limit state design except in the case of
concrete, which changed from allowable strength design to limit state design in the 1960s. Wood, steel, and other materials are still frequently designed using allowable strength design, although LRFD is probably more commonly taught in the USA university system.
Wikimedia Foundation. 2010.
Look at other dictionaries:
Limit state design — (LSD) refers to a design methodology used in structural engineering. The methodology is in fact a modernization and rationalization of engineering knowledge which was well established prior to the adoption of LSD. Beyond the concept of a limit… … Wikipedia
Scaffolding — is a temporary framework used to support people and material in the construction or repair of buildings and other large structures. It is usually a modular system of metal pipes (termed tubes in Britain), although it can be made out of other… … Wikipedia
List of structural engineering topics — This page aims to list all articles related to the specific discipline of structural engineering. For a broad overview of engineering, please see List of engineering topics. For biographies please see List of engineers.compactTOC NOTOC AA frame… … Wikipedia
BS 5950 — is the British Standard for the design, fabrication and erection of structural steelwork. It does not apply to bridges, which are covered by BS 5400. BS 5950 replaced BS 449, which used a permissible stress approach, and uses limit state design… … Wikipedia
India — /in dee euh/, n. 1. Hindi, Bharat. a republic in S Asia: a union comprising 25 states and 7 union territories; formerly a British colony; gained independence Aug. 15, 1947; became a republic within the Commonwealth of Nations Jan. 26, 1950.… … Universalium
radiation — radiational, adj. /ray dee ay sheuhn/, n. 1. Physics. a. the process in which energy is emitted as particles or waves. b. the complete process in which energy is emitted by one body, transmitted through an intervening medium or space, and… … Universalium
china — /chuy neuh/, n. 1. a translucent ceramic material, biscuit fired at a high temperature, its glaze fired at a low temperature. 2. any porcelain ware. 3. plates, cups, saucers, etc., collectively. 4. figurines made of porcelain or ceramic material … Universalium
China — /chuy neuh/, n. 1. People s Republic of, a country in E Asia. 1,221,591,778; 3,691,502 sq. mi. (9,560,990 sq. km). Cap.: Beijing. 2. Republic of. Also called Nationalist China. a republic consisting mainly of the island of Taiwan off the SE coast … Universalium
dance — dancingly, adv. /dans, dahns/, v., danced, dancing, n. v.i. 1. to move one s feet or body, or both, rhythmically in a pattern of steps, esp. to the accompaniment of music. 2. to leap, skip, etc., as from excitement or emotion; move nimbly or… … Universalium
France — /frans, frahns/; Fr. /frddahonns/, n. 1. Anatole /ann nann tawl /, (Jacques Anatole Thibault), 1844 1924, French novelist and essayist: Nobel prize 1921. 2. a republic in W Europe. 58,470,421; 212,736 sq. mi. (550,985 sq. km). Cap.: Paris. 3.… … Universalium