Cutting, punching, marking

The typical operations

Cutting to length

Cut-off follows the program. Every member is exactly the length the design calls for — there are no standard lengths and no cutting to size on site.

Service hole

The opening cut in the web through which services pass. It is not structurally neutral: the position and size of the hole are an engineering question. Web holes and service openings.

Dimple

The indentation marking the screw point. It guides the screw and makes erection repeatable.

Connection cut-out

Swages and corner cuts that let one section fit another. These are what make trimming on site unnecessary.

Marking

The part identifier. It says where the member goes — and with mixed thickness it has structural significance. Marking and erection logic.

The tool set as a design framework

Every machine has a given tool set: how many operations, with what geometry, where on the section. On some machines a custom tool can be ordered at purchase.

This means the designer has to know not only the profile but the operations too. A connection that the machine’s tool set can produce is far cheaper than one requiring later manual work.

The benefit to the designer

In welded steelwork every cut-out, hole and plate is separate workshop work and a separate cost item. Here it is part of the same pass.

That is why trusses and bracing systems can be designed with angles and layouts that would be disproportionately expensive to cut and weld by hand in hot-rolled steel. Complexity increases the design work, it does not limit feasibility.

What the machine does not solve

• Assembly: somebody screws the panel together, in the plant or on site.
• Special connectors: brackets, plates and hold-down components are often separate products.
• Later modification: altering a finished member on site is always worse than a good design.

The point

Machine operations are free, human work is not. A designer who keeps that sentence in mind ends up with a cheaper structure — at the same quality.