urchaidh wrote:

Anyone got any advice on fitting B. Gypsum Fireliner board onto
internal steelwork? I need 1hr protection on an interior standard
(veritcal 150mm PFC) and beam (horizontal 178mm UB/RSJ) so I'm looking
at 15mm.

The architect has specified Gyplyner system to do this which looks like
it will work just fine though I have two concerns. The first is cost,
obviously.

The second is that the PFC standard is bolted to a 100mm single brick
wall so it already protrudes by 25mm each side, add another 15mm each
side for the fireproof board and that's 40mm (plus) I need to make up
on each side to make the wall flish with the fireboard. The Gyplyner
system looks like it will impose yet another standoff that I'd rather
avoid.

I can't find out from the White Book if a gap between board and
steelwork is required to achieve fireproofing. If not, can I just glue
the board to the steelwork where I have a flat surface and what
adhesive would folks recommend?

For normal plasterboarding I'd use wooden dwangs* hamered into the
channel and face of the beam for the open sections, but that seems a
bit useless for fireproofing as the baord may not protect the dwangs so
the baord would just fall off anyway.

Anyway, this is a longer post than I inteneded so, please, any comments
on this sort of thing greatly appreciatted.

* is 'dwang' a Scottish term, it sounds like it might be? I take it to
mean a bit of wood fastned into brickwork or steelwork that you can
later fasten other timber (or plasterboard fittings) to.

No idea if its legal, but a hilti nail gun can fire steel pins through
steel beams...

I would think glue is not on - it might fail and leave te steel e=xposed
in a fire.

Personally I'd drill and use self taps.