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● Guide · Prefabrication

Prefabricated shelters: built in the plant, placed on site

A prefabricated shelter is cast and fitted out in a factory, then brought to site in one piece or in modules. On site, the work is mostly groundwork, the foundation and the connections. The shell itself is already finished when it arrives.

That changes the project more than people expect. Concrete cures under controlled conditions, the reinforcement is checked before casting, and weather on site no longer decides the schedule for the structure.

What happens in the plant

Formwork, reinforcement and concrete are handled in the same hall, by the same team, for every unit. Door frames, wall penetrations for ventilation and cable ducts are cast in at this stage rather than drilled later.

Production at our plant takes 60 to 70 working days from release of the final drawings. That figure covers the concrete work and the technical fit-out, not the planning and permit phase before it.

Getting it to site

Finished units travel on a heavy-load trailer and are lifted into place with a mobile crane. That is the one real constraint of the method: the truck has to reach the site, and the crane needs a firm, level spot close enough to set the unit down.

We check this before anything else. A narrow lane, a low bridge or soft ground can rule out a location, or push the shelter to a different spot on the same plot.

Finished units and modular systems

We build two kinds of shelter. SafeGarden and SafeOffice are finished units with fixed dimensions. They arrive fitted out and are not designed to be extended.

SafeCore and SafeUnit are modular. They are planned for each project, and capacity is added by coupling further modules. SafeUnit can be extended in stages up to 15 coupled modules.

SystemTypeTypical usePlacement
SafeGardenFinished unitPrivate gardenAbove ground
SafeOfficeFinished unitPrivate plot, also as a workroomAbove or below ground
SafeCoreModular, project-specificCompanies, critical infrastructurePlanned per site
SafeUnitModular, up to 15 modulesMunicipalities, public sectorPlanned per site

Where prefabrication is not the right answer

If a shelter has to be built into an existing basement, or sits under a building that is going up around it, a cast-in-place solution may fit better. The same applies when access is so restricted that no crane can reach the site.

We would rather tell you that early than plan around a problem that will not go away.

Questions we get asked

60 to 70 working days in the plant, once the drawings are final. Planning and any permit come before that.

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