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Structural
steel protection
The level of fire resistance required for columns and beams depends on the purpose
group and size of the building and this can be found in the local building code.
Any column or beam must have at least the fire resistance required for any other
element of structure to which it provides support (whether that other element is loadbearing
or not).
Any column or beam forming part of more than one building or compartment must
have a fire resistance which is the greater of the relevant requirements.
SUPALUX® can be used to provide up to
120 minutes fire resistance to
structural steelwork. The board can be
screwed directly to a light gauge steel frame to form encasements.
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0.6mm thick profile steel cladding |
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125mm x 50mm x 3mm thick channel
sheeting rail at 2200mm centres |
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25mm x 25mm x 0.4mm thick steel angle
fixed to channels using one number
No.8 self-tapping screw per leg |
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25mm x 50mm x 25mm x 0.4mm thick
steel channel at 610mm centres |
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9mm thick SUPALUX® cover strip 75mm wide |
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25mm x 25mm x 0.91mm thick
top and bottom angle |
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9mm thick SUPALUX® fixed to channels
and cover strips using 19mm long
No.8 self-tapping at 300mm centres |
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120 minute fire rated SUPALUX® 3-sided
structural steel beam protection
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| 1) |
SUPALUX®
board
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| 2) |
Structural steel beam
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| 3) |
25mm x 25mm x
minimum 0.65mm thick steel angle
fixed to floor with 3.7mm
diameter x 32mm long shot fired
nails at 400mm centres.
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| 4) |
75mm wide SUPALUX®
cover strips of same thickness as casing,
fixed on both sides of the joint with
No.8 self-tapping screws
at 160mm centres |
| 5) |
Soffit
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NOTE:
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120 minute
fire rated SUPALUX® 4-sided structural
steel column protection
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| 1) |
SUPALUX® board
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| 2) |
Structural steel column
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| 3) |
25mm x 25mm x
minimum 0.65mm thick steel angle
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| 4) |
75mm wide
Supalux® cover strips of same thickness as casing,
fixed on both sides of joint with
No.8 self-tapping screws
at 160mm centres.
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NOTES:
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