Start with the exact model dimensions
Published model examples range from about 1200 × 850 mm for the 25 kg/day class to 3200 × 1900 mm for the 500 kg/day class. Those are machine-body dimensions; service and operating clearances are additional.

Service access is not optional empty space
Panels, bearings, drive components, heaters or other service points may need access. Mark opening directions and service sides before deciding where the machine sits.
Loading route needs working room
Operators may use bins, trolleys or collection containers. A narrow gap that technically permits a person to pass may still be impractical for repeated loading and cleaning.
Curing can use more area than expected
A machine processing waste every day produces a recurring output stream. The curing area should be sized around the site’s actual output handling method and retention period, not treated as spare floor.
Draw the whole workflow
A simple top-view plan showing incoming waste, machine, service zone, operator route, curing and finished-material movement is more useful than a standalone machine rectangle.
Footprint is only the first rectangle on the plan
The published body dimensions tell you how much floor the machine occupies, but an operational layout also needs loading space, operator movement, door or panel opening, service access, waste trolley movement and a separate curing/output area. Draw these zones around the machine before committing the room; this is especially important in basements or narrow utility areas.
- Draw the machine to scale.
- Add the actual loading approach and trolley turning space.
- Keep serviceable sides accessible.
- Show curing bins or floor area separately.
A workable OWC room is a workflow layout, not a brochure footprint.
When the question becomes model-specific
This guide stays general. For exact figures on a particular machine, these published pages from the COMPOSTO range are the reference.
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