http://www.google.de/search?hl=en&q=%22off+sh...

It should relate to a surface treatment but I am afraid I do not understand either what exactly is to be done. Maybe you understand a bit more when leafing through the google hits.

Thanks, this helps a bit - although I still don't fully grasp it ...

It is probably about concrete surfaces:
http://www.wiehahn.co.za/PDF/Editorials/Salda...

http://www.google.de/search?hl=en&q=%22off+sh...

... and as far I understand it, it simply is cast concrete "off the shutter", wherein "shutter" means "Schalung" in German:

Dictionary: shutter

This means that the "Schalungsbretter" (as you say in German) have to have a smooth surface thus rendering the cast concrete surface as smooth as the (wooden) boards.

Was das genau ist, habe ich auch nicht rausbeommen.
Ggf. hilft, daß es off-shutter concrete gibt (ich hab selbst auch hier nichts Konkretes gefunden)

Aber ich vermute!!!!! daß es sich um eine eingeprägte Oberfläche handelt, wie die durch die Verschalung verursachte Holzstruktur von Beton.

*w&wsindsicheinigundkriegeneinenSynchronpunkt*

This must be it, thank you!
I just never thought "Schalung" for "shutter" - shouldn't that be "formwork" or "mould" ...? At least that's what I learnt from my co-workers :) So it is probably just the surface finish of precast concrete segments, with or without "woodprint"

Thank you both!

@nana - you're right, but you might like to have a look at the LEO link above.

This is why I like LEO forums so much. You search and learn, constantly, even while solving other people's problems...