A factory is a machine housing other machines. Almost every decision about the building traces back to something the production line requires, and the useful discipline during design is to keep asking what the process needs rather than what the building would prefer.
Spans and crane loads
If overhead cranes are part of the operation, they are a structural input from the beginning. Crane capacity, travel and the loads transferred into the frame all shape the steel design, and retrofitting a crane into a frame that was not designed for one is a substantial exercise.
The floor is a working surface
Industrial slabs carry point loads from equipment and moving loads from handling vehicles, and some processes need a flatness tolerance tighter than general construction practice. Joint layout, curing and surface treatment all deserve attention, because floor problems are disruptive to fix once production has started.
Building around a live handover
Factories are frequently commissioned in stages, with equipment installation overlapping construction. That overlap needs planning: access routes, temporary power, protection of finished areas and a clear sequence agreed with whoever is installing the plant.
Where the equipment supplier is a separate company, the interface between their scope and the building works is worth writing down early — who provides the bases, the connections and the final alignment. Left vague, it is discovered at the point where both parties are waiting for the other.
