When a crematorium, for instance, which is not an industrial building but requires heavy machinery, is constructed, are the environmental systems, like HVAC and mercury abatement systems, or the actual furnaces themselves brought to site in pieces and assembled at first fix stage or put in place before the roof or slab above goes on? Or are they just serviceable by a separate large entrance?
Large entrance is best. Long ago setting equipment then constructing the walls was a common practice. When the original machines need to be replaced it is a problem.
