Corner Casting Setout
The ISO 1161 corner-casting positions every twistlock, socket and lifting fitting here is built to match.
Every foundation, trailer bed, plinth or steel frame is set out to the same four points: the twistlock centres for 10 ft, 20 ft and 40 ft containers.
- 10 ft (1D): longitudinal centres 2 788 mm, transverse centres 2 260 mm
- 20 ft (1CC / 1C): longitudinal centres 5 855 mm, transverse centres 2 260 mm
- 40 ft (1AA / 1A): longitudinal centres 11 989 mm, transverse centres 2 260 mm
- Gap between abutting containers: 279 mm
Treat these as a starting point, not a guarantee: containers vary by manufacturer, age and repair history, and any individual unit may differ from the figures given. Mark out a trial position and confirm the fit before fixing anything permanently.
A single setout can serve two configurations, because two shorter containers occupy the same footprint as one longer one: two 10 ft units fit within a 20 ft setout, and two 20 ft units within a 40 ft setout, sharing the four outer twistlock points between both arrangements. Build the foundation to the combined dimensions and the same fixing points will take either arrangement later — two short containers today, one long one after a site change — with no new holes drilled and no twistlocks relocated. It's the 279 mm gap between abutting containers that makes the two setouts line up.