The production line was set up in a factory close to site and units were stored for at least the capacity of a night’s work. Night-time was when free access to the building works was usually guaranteed and was least disruptive to the client’s business. A single unit size was designed to fit on the back of a rigid bed lorry, similar in size to a large open-sided container, so needed to be braced to ensure safe transport. A unit was lifted straight off the lorries and into the in-situ structural steel frame. A multi-skilled production gang received the unit, manhandled it along the rails and installed it. Specialist ‘Hiab’ equipment was used to load and unload the units, saving on the constant hiring of cranage. The fixing rate grew from two to eight units per night-shift as the gangs became familiar with the construction process. Approximately two modules were produced per day in the factory