File:Sl silicone pipe covering.jpg

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Description Mechanical pipe through-penetrations in 2 hour fire-resistance rated concrete floor slab with metallic piping, covered through the thickness of the firestops with 25mm thick rockwool pipe covering with foil scrim kraft facing. Running the pipe covering through the firestop maintains the vapour barrier. A weak link in the vapour barrier is the cutting and fitting required around riser clamps. Rockwool, foam glass, calcium silicate, perlite and vermiculite pipe covering can survive a fire test with a hose-stream. Foamed plastic, rubber and fibreglass require either removal or wrapping with an intumescent layer to be sure that as the pipe covering disappears during a fire, the vacated space is occupied by solid matter that can withstand the fire test and hose stream test, all subject to bounding.
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Source Own work
Author Achim Hering

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Public domain This work has been released into the public domain by its author, I, Achim Hering. This applies worldwide.
In some countries this may not be legally possible; if so:
I, Achim Hering grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

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current02:32, 21 June 2007Thumbnail for version as of 02:32, 21 June 20073,432 × 2,346 (771 KB)Achim Hering (talk | contribs){{Information |Description=Mechanical pipe through-penetrations in 2 hour fire-resistance rated concrete floor slab with metallic piping, covered through the thickness of the firestops with 25mm thick rockwool pipe covering with foil scrim kra

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