Heavy moves

This chapter deals with the horizontal and vertical movement of heavy loads. It outlines the reasons for choosing this method of construction and discusses the various methods that are available and used within the industry. Although conventional cranes are mentioned, priority is given to alternative techniques, including trailers, hydraulic jacks and various skidding systems.

First, what constitutes a ‘heavy move’? For the purposes of this chapter, a heavy move is something that cannot be installed using conventional site plant. It could be as low as 5 t (e.g. retrofitting a vault into an existing bank basement) or as heavy as 30 000 tonnes (lifting of a complete oil platform). The idea of constructing a component somewhere other than its final location must offer a significant advantage over in situ construction for it to be considered. The advantage is usually seen as one or more of the following.