Author: The Institution of Structural Engineers
1 September 2013
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The Institution of Structural Engineers
This Technical Guidance Note provides information about a number of common floor construction forms that are currently available. It focuses on concrete based solutions: some acting compositely with steel elements,such as reinforcement and/or steel members. Descriptions of each flooring system together with their key features (which cover topics such as buildability, aesthetics and compatibility of other elements e.g. buildingservices) are included. Please be aware that floor slab technology is continually evolving and that new floor slab solutions continue to become available as a result.
(This article was updated in October 2016 to reflect errata issued since its original publication.)
This Technical Guidance Note describes the basic knowledge required to read drawings produced by structural engineers.
Imposed load is defined as the load that is applied to the structure that is not permanent and can be variable. In Eurocode phraseology, it is described as a 'quasi-permanent variable action'. Please be aware that this note does not cover lateral loads onto barriers, balustrades and axle loads from vehicles. These will be covered in a forthcoming note. (This article was updated in October 2016 to reflect errata issued since its original publication.)
This Technical Guidance Note concerns the concept of notional loading, which the Eurocodes classifies as Equivalent Horizontal Forces. These are loads that exist due to inaccuracies and imperfections introduced into the structure during its construction. The following text explains how notional lateral loads are incorporated into the design process. (This article was updated in October 2016 to reflect errata issued since its original publication.)