Corus Hollow Sections and S605
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Transcript of Corus Hollow Sections and S605
Corus Tubes
Structural & Conveyance Business
Intumescent coatings &Celsius® concrete filled columns
Corus Celsius® hot finished structural
hollow sections have been subjected
to full scale 90 and 120 minute fire tests
when loaded compositely as, concrete
filled columns externally protected by
an intumescent coating. These tests
have confirmed that substantial
reductions can be made to the costs
of providing an extended fire life to
the finished column.
Minimum column size was first
established by designing the columns as
fully utilised, composite, concrete filled
hollow sections, at room temperature.
The columns were then protected with
Nullifire S605 intumescent coating.
Substantial reductions were made in the
instumescent coating dry film thickness
by taking full account of the column’s
improved ability to absorb heat due to
the presence of the concrete core.
The performance of the concrete core
had been quantified by an earlier series
of fire tests performed on a wide ranging
set of indicative SHS specimens.
The table to the right compares the
revised dry thickness in microns (µm)
of Nullifire S605 needed to provide 60
minutes fire resistance to typical sizes of
concrete filled sections with the previous
specified coating thickness, which was
based simply on the Section factor
(Hp/A) of the unfilled hollow section.
Further information on cost competitive
hollow section columns can be found in
Corus Tubes - Multi-Storey, Cost
competitive columns in structural
hollow sections.
The following tables show the reduced
coating dry film thickness that can now
be used in conjunction with Corus Tubes
Celsius® hot finished structural hollow
sections to EN 10210, filled with a
structural grade concrete and designed
as composite structural concrete filled
sections at room temperature, and
protected with Nullifire S605
intumescent coating.
Instumescent coatings &Celsius® concrete filled columns
mm 3.6 - 10.0 12.5 - 16.0 ≥20.0 3.6 - 10.0 12.5 - 16.0 ≥20.0 3.6 - 10.0 12.5 - 16.0 ≥20.0
114.3 1300
139.7 1300
168.3 900 1600
193.7 900 1300 1600 1660
219.1 750 570 610 1450 1250 1430 3250 2850 4450
244.5 750 570 610 1450 1250 1430 3250 2850 4450
273.0 750 570 610 1450 1250 1430 3250 2850 4450
323.9 400 470 570 1040 1110 1250 1930 2070 2390
355.6 400 470 570 1040 1110 1250 1930 2070 2390
406.4 400 470 570 1040 1110 1250 1930 2070 2390
457.0 400 470 570 1040 1110 1250 1930 2070 2390
508.0 400 470 570 1040 1110 1250 1930 2070 2390
610.0 400 470 570 1040 1110 1250 1930 2070 2390
660.0 400 470 570 1040 1110 1250 1930 2070 2390
Coating thickness for Nullifire S605 in microns (µm)
Size Fire resistance time: 60 min Fire resistance time: 90 min Fire resistance time: 120 min
D Thickness range min - max Thickness range min - max Thickness range min - max
168.3 x 8.0 2250 900
193.7 x 10.0 1550 900
244.5 x 6.3 3450 750
323.9 x 8.0 2250 400
Previous Previous
Size coating coating
D thickness thickness
mm µm µm
Hot finished circular hollow sections
mm 3.6 - 10.0 12.5 - 16.0 ≥20.0 3.6 - 10.0 12.5 - 16.0 ≥20.0 3.6 - 10.0 12.5 - 16.0 ≥20.0
100 x 100 1300
120 x 120 1300 1300
140 x 140 1300 1300
150 x 150 900 940 1600 1660
160 x 160 900 940 1600 1660
180 x 180 900 940 1600 1660
200 x 200 670 540 1340 1140 2800 2270
250 x 250 670 540 1340 1140 2800 2270
300 x 300 350 380 920 980 1600 1750
350 x 350 350 380 920 980 1600 1750
400 x 400 350 380 480 920 980 1100 1600 1750 2010
Coating thickness for Nullifire S605 in microns (µm)
Size Fire resistance time: 60 min Fire resistance time: 90 min Fire resistance time: 120 min
B x B Thickness range min - max Thickness range min - max Thickness range min - max
mm 3.6 - 10.0 12.5 - 16.0 ≥20.0 3.6 - 10.0 12.5 - 16.0 ≥20.0 3.6 - 10.0 12.5 - 16.0 ≥20.0
100 x 150 1130 1300
100 x 180 1130 1300
100 x 200 1130 1300
100 x 250 1130 1300
100 x 300 1130 1300
120 x 200 1130 1300
120 x 400 1130 1300
140 x 260 1130 1300
150 x 200 900 940 1600 1660
150 x 250 900 940 1600 1660
150 x 350 900 940 1600 1660
150 x 400 900 940 1600 1660
200 x 300 670 540 1340 1140 2800 2270
200 x 400 670 540 1340 1140 2800 2270
200 x 500 670 540 1340 1140 2800 2270
250 x 300 670 540 1340 1140 2800 2270
250 x 350 670 540 1340 1140 2800 2270
250 x 450 670 540 1340 1140 2800 2270
300 x 400 350 380 920 980 1600 1750
300 x 500 350 380 480 920 980 1100 1600 1750 2010
Coating thickness for Nullifire S605 in microns (µm)
Size Fire resistance time: 60 min Fire resistance time: 90 min Fire resistance time: 120 min
B x H Thickness range min - max Thickness range min - max Thickness range min - max
Hot finished square hollow sections
Hot finished rectangular hollow sections
www.corusgroup.com
Corus TubesStructural & Conveyance BusinessSales Enquiries contact:UK Sales officePO Box 6024, Weldon RoadCorby, Northants NN17 5ZNUnited KingdomT +44 (0)1536 402121F +44 (0)1536 [email protected] Helpline (UK Freephone)0500 123133 or +44 (0) 1724 405060
Corus TubesStructural & Conveyance BusinessSales Enquiries contact:Netherlands Sales officePostbus 39 4900 BB OosterhoutThe NetherlandsT +31 (0)162 482300F +31 (0)162 [email protected]
For details of Nullifire S605 contact:Nullifire Ltd.Torrington AvenueCoventryCV4 9TJ T +44 (0)247 68 55000
CT17/4:2000:UK:01/2005
Care has been taken to ensure that thisinformation is accurate, but Corus Group plc,including its subsidiaries, does not acceptresponsibility or liability for errors or informationwhich is found to be misleading
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