Author: P. Pallett (Pallett TemporaryWorks Ltd)
1 December 2016
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P. Pallett (Pallett TemporaryWorks Ltd)
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. A second article, giving worked examples, with solutions to reduce overloading flat slabs during construction, will follow in the January 2017 issue.
Bamboo is a strong, fast growing and sustainable material, having been used structurally for thousands of years in many parts of the world. In modern times, it has the potential to be an aesthetically pleasing and low cost alternative to more conventional materials, such as timber, as demonstrated by some visually impressive recent structures. This third article proposes: strengths and other properties for the scheme design of any bamboo species; a method for calculating characteristic strength values from test data; and a method for calculating design values of strengths for limit state design. It is believed to be the most up-to-date guide available for determining design values for bamboo elements.
Site hoarding is a temporary structure erected around the perimeter of construction sites to prevent any unauthorised person gaining access. Hoarding can be erected using a modular system or be a bespoke installation. This article provides an introduction to the design of conventional timber hoardings using plywood sheets.
Current highway bridge designs in the UK tend to favour either composite steel girders with a precast or in situ concrete deck for long spans, or precast concrete beams with an in situ concrete deck for spans of less than 40m. This article considers temporary works, in particular the use of temporary supports, to precast concrete bridge beams during deck construction.