Author: C. Bennion (Kier Group)
2 May 2017
C. Bennion (Kier Group)
This article considers temporary works, in particular the use of temporary supports, to precast concrete bridge beams during deck construction.
The article is aimed at permanent works designers involved with the design elements of this form of construction, as well as civil and structural engineering undergraduate students.
Last month’s article in the series covered the theory and detailed methods recommended for calculating backpropping loads. This article continues by discussing some of the design issues and preconceptions related to backpropping, and gives worked examples.
A structure in its permanent state cannot be ‘wished into place’. Appropriate consideration must be given to construction methodology so that permanent works can be optimised, temporary works minimised and trade interfaces simplified. This article presents a list of general, high-level considerations that relate to construction methodology and optimisation of temporary/permanent works, with a number of examples provided.
This article explains the theory and background to backpropping and gives advice on the methods recommended to be adopted for backpropping calculations. It looks at the physics involved and how engineers and designers can mitigate damage to concrete slabs during construction.