Planning a rail system: one unit for the whole area

The building first, then the system

A rail system does not carry itself. It hangs from the roof structure, stands on its own columns or is tied into existing ones. Which option is possible follows from the building statics – and in existing buildings those are often undocumented or altered by later installations. The first question is therefore about the load reserve, not about the payload of the unit. Where records are missing we capture the as-built condition by 3D scan and calculate from there.

Single girder, area system, monorail

For a machine row a single-girder system is enough: one rail above the line, the unit travels from station to station. Where the area has to be served in two directions, an area system of main girders and cross girders is needed – a crane runway in miniature. A third design is often overlooked: the monorail with switches, which lets one unit move between distant areas without covering the entire floor.

• Single girder: one line, one unit, lowest investment
• Area system: main and cross girders, every point reachable
• Monorail with switches: links distant areas without full coverage
• Free-standing portal: when the building may not carry the load

The grid determines later flexibility

Too wide a grid saves girders and costs deflection; too tight a grid costs material and clutters the shop. But something else is decisive: the grid fixes where future workstations can stand. If you have four stations today and six in five years, choose the grid accordingly – retrofitting cross girders is easy, changing the main grid is not.

Energy is the most common retrofit point

Compressed air, power, signals and often vacuum have to travel along. A drag chain is the simplest solution and limits the travel path; a continuous energy supply allows unlimited rotation and travel but costs more and has to be planned from the start. Retrofitting is the most expensive route. Also plan a spare channel – the second sensor arrives reliably, and it arrives after commissioning.

What else hangs in the shop

Lighting, ventilation ducts, sprinkler lines, extraction, cable trays: more hangs above a grown shop than any drawing shows. Without a three-dimensional survey, clashes only appear during installation – at the most expensive moment. A 3D scan of the as-built condition costs a fraction of what an installation stop costs, and incidentally supplies the model for later extensions.