Governs cladding of cable routes — alongside penetration plans, in stock documentation, in new build.
Unlike fire doors or seals, claddings don't form compartments — they stabilise load-bearing structures. The steel beam, the duct, the timber stays load-bearing under fire for the defined duration. In Schloß Holte-Stukenbrock, this matters most in public buildings where a beam collapse means a section collapse.

