The Structural Engineer > Archive > Volume 90 (2012) > Issues > Issue 9 > Technical Guidance Note (Level 1, No. 15): Moment distribution
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Technical Guidance Note (Level 1, No. 15): Moment distribution

While the advancement of computer based analysis continues to grow exponentially within the field of structural engineering, the tools that are used to analyse structures by hand are no less relevant. Many would argue that such tools are even more vital today than they have ever been if we are to fully understand the output of analysis applications. With this in mind, this Technical Guidance Note describes one of the most powerful analysis tools available: moment distribution.

Moment distribution is a method by which statically indeterminate structures are analysed elastically. It’s based on the relative stiffness of elements that make up a structure and shifts bending moments from one section of the structure to another until they become balanced. Once this balance has been achieved, the forces and bending moments within the structure are modelled.

(This article was updated in October 2016 to reflect errata issued since its original publication.)

Author(s): The Institution of Structural Engineers