corus SRD 16pp brov3:Corus SRD brochure FINAL 15/07/2009 09:12 Page 1
Corus Panels and Profiles
Structural roof decking and trays Steel & Aluminium
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Corus Panels and Profiles Corus Panels and Profiles offers the most comprehensive range of structural roof decking all under one UK manufacturer’s roof. With decks ranging from 32mm to 210mm deep, and HL130 stuctural tray, we support all types of insulated roof systems: Single ply membrane Metal standing seams Green roofs Slates and tiles Three ply felt Asphalt
Technically the best, with a structural design service providing diaphragm design for decks and full support calculations for all profiles.
© BAA Limited see www.baa.com/photolibrary
• • • • • •
To offer the structural deck specifier more choice, we can supply additional profiles to compliment our UK manufactured range from Corus Holland.
Metal standing seam roofs Standing seam roofs are used in a vast range of applications from aesthetically demanding projects to functional buildings. Corus Panels and Profiles Structural Roof Decks eliminate the need for purlins and when perforated offer excellent acoustic performance.
0845 30 88 330 2
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Green roofs The UK's largest and greenest sustainable storage facility at Adnams Brewery used Corus Panels and Profiles D159 under a Sky-Garden Greenroof to reduce the visual impact of the building on the landscape and to regulate the internal temperature."
© BAA Limited see www.baa.com/photolibrary
Tiles and slate roofs Structural liner trays provide an excellent support system for traditional tiled and slate roofs. The tray's inherent strength allows long sheet lengths to be used, requiring fewer supports and also enables the structure to be quickly weatherproof. The tray can also offer exceptional acoustic performance whilst giving an attractive internal flat soffit.
Single ply roofs Single ply roofs are the most successful form of non-residential flat roofing in the UK. Corus Panels and Profiles roof decks offer the complete structural package with single ply membrane, for long and short span designs.
3
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Profile Ranges Developed to optimise the designer’s needs for efficiency, aesthetics and structural performance.
Structural roof deck profile range Load/span figures The tables are based on a total ‘Dead & Super’ imposed load of 1.50kN/m2, a line load of 2.00kN/m and a deflection limit of L/200. The factor of safety used is 1.5. Where actual design loads exceed these, the spans must be reduced. Subject to satisfactory fixings, the decks will resist wind uplift to at least the value of 1.50kN/m2, and a deflection limit of L/90. Full load span tables may be obtained from our website: www.coruspanelsandprofiles.co.uk or from our technical department. Maximum cantilevers assume a 0.9kN point load on the end, with the adjacent span being the single span as shown in the table. The end of the cantilever must be stiffened with an angle flashing. Steel type is taken as galvanised at 280N/mm2 guaranteed minimum yield stress and coated steel at 220N/mm2 Sheet lengths – extended end laps Sheet lengths in excess of 12 metres are not practical for installation on site and may also be subject to delivery restrictions. Extended end laps can be used to create a double span whilst keeping the deck length to a minimum. If a deck length in excess of 12 metres is nevertheless required, contact our Technical Department for assistance.
D32s 1000
Cover width 1000
200
D35
Cover width 900 75
D46
Cover width 900 105
D159 D210 D159 D210 D210 D210
0845 30 88 330 4
D210 D210
46
67 225
D60
Cover width 800 90
60
64 200
Cover width 700
D100
109
63 100 233.3
D159
Curving D159 Self curving can induce stress marking in the sheet. The radius D210 limits suggested in the tables reduce the visible effect of this; D159 D210 however some perceptible distortion may occur. For Material specification see page 11
35
35 150
D159
Point and impact loads Metal decking may mark if subjected to extreme point or impact load. Where the sheet is required as an exposed soffit, a thicker qauge should be considered if localised markingD159 is not acceptable. D159
32
27
127.5
108
Cover width 750 142 38
159 250 52
88
210 Cover width 600
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Gauge & finish mm
Steel
0.7 Colorcoat
D32s 1000
Material
®
1300*
1600
40
NA
325
6.67
1600*
2000
40
NA
325
0.9 Galvatite
®
8.58
1800*
2400
45
NA
375
11.46
2000*
2800
50
NA
450
2.98
1100*
1600*
40
NA
250
3.97
1300*
1900*
50
NA
300
7.05
1800*
2200
40
400
400 400
D35
0.7 Colorcoat
®
0.7 Galvatite
®
7.05
1800*
2500
40
400
0.9 Galvatite
®
9.07
2000*
2800
50
400
475
12.10
2300
3100
60
NA
575
3.14
1300*
2000
40
400
300
4.19
1600*
2300
50
NA
350
7.20
2400
2600
55
400
575 575
D46
0.7 Colorcoat
®
0.7 Galvatite
®
7.20
2400
3000
55
400
0.9 Galvatite
®
9.26
2700
3600
65
400
650
12.37
3000
4000
75
NA
725
3.21
1800
2400
55
400
400
4.28
2100
2800
65
NA
475
8.20
3000
3300
70
NA
725
®
D60
Steel
0.7 Colorcoat
®
0.7 Galvatite
®
8.20
3000
3800
70
NA
725
0.9 Galvatite
®
10.55
3300
4500
80
NA
800
®
D100
Steel
®
0.7 Colorcoat
3700
4900
85
NA
875
3.66
2400
3000
70
NA
575
4.88
2600
3500
80
NA
625
9.61
4400
4400
110
NA
1000
®
0.7 Galvatite
®
9.61
4400
4600
110
NA
1000
0.9 Galvatite
®
12.36
4800
5800
120
NA
1150
®
®
16.50
5300
7000
125
NA
1250
4.29
3400
4000
110
NA
850
5.71
3700
5000
120
NA
925
0.9 Stucco 1.2 Plain+
D159
1.25 Galvatite & Colorcoat
Aluminium
1.5 Plain
D210
®
Steel
Steel
1.25 Galvatite
®
14.09
0.9 Stucco 1.2( Plain+
1.2 Galvatite & Colorcoat Aluminium
®
0.9 Stucco 1.2 Plain+
1.2 Galvatite & Colorcoat Aluminium
®
0.9 Stucco 1.2 Plain+
1.2 Galvatite & Colorcoat Aluminium
®
0.9 Stucco 1.2 Plain+
®
Steel
Minimum Minimum Maximum self curve factory Cantilever m curve mm mm
6.67
1.2 Galvatite & Colorcoat Aluminium
Load/Span maximum Double Span mm
0.7 Galvatite
®
Steel
Load/Span maximum Single Span mm
®
1.2 Galvatite & Colorcoat Aluminium
Weight kg/m2
®
®
19.19
7000
8800
220
NA
1550
7.97
5400
6400
200
NA
1200
16.24
7300
8000
250
NA
1750
®
Colorcoat . The standard finish is Interior Liner, however HPS 200 Ultra is also available. Other finishes and materials are available subject to minimum order quantity. + minimum quantity requirements and longer lead times may apply * Span limited by 2kN/m line load
5
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Profile Ranges
Structural liner tray
HL600/130 38.50
The HL130/600 structural liner tray provides a neat planar inner surface, flat except for the stiffening ribs. It is suitable for both roof and wall cladding applications spanning across the main steels and omitting the need for purlins or cladding rails.
60
HL130/600 130 Cover width 600
D135 D135
Structural roof deck profile range (Corus Holland ) HL600/130 D135 Perf (33%)
Cover width 930
These profiles are supplied from Corus Holland D135 to compliment our UK manufactured range and may be subject to minimum order requirements and extended lead time. For further information please contactD153 our sales department.
D153
D135
165
43
137 310 Cover width 840
D153
161
40
119 153
D153 D158 D153 D158
145
280
D158
Cover width 750 131 40
119 158 250
D158 D200
D200 D158
Cover width 750 170
205
75 205
D200 375
0845 30 88 330 6
D200 D200
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Roof tiles or slates
Breather membrane
Mineral wool insulation roll Timber batons Structural liner tray
Steel
Gauge & finish mm
Weight kg/m2
Load/Span maximum Single Span mm
Load/Span maximum Double Span mm
Maximum Cantilever mm
® 0.75 Colorcoat +
9.77
5000
3700
1100
13.04
5600
5300
1400
1.00 Colorcoat
®
®
Colorcoat . The standard finish on HL130/600 is textured polyester
Material
Gauge & finish mm
Steel
0.75 Colorcoat
D135
HL130/600
Material
D153
Steel
D158
Steel
D200
Steel
+ minimum quantity requirements
Weight kg/m2
Load/Span maximum Single Span mm
Load/Span maximum Double Span mm
Minimum Minimum Maximum self curve factory Cantilever m curve mm mm
®
9.50
5400
5100
150
0.88 Colorcoat
®
11.14
5500
5600
160
1200
1.25 Colorcoat
®
15.83
6100
7500
180
1350
0.75 Colorcoat
®
10.51
5600
5500
165
0.88 Colorcoat
®
12.33
5900
6200
175
1300
1.25 Colorcoat
®
17.53
6600
8300
195
1400
0.75 Colorcoat
®
11.77
5600
5800
170
0.88 Colorcoat
®
13.81
6300
6600
180
1450
1.25 Colorcoat
®
19.63
7000
8800
200
1550
0.75 Colorcoat
®
11.77
6900
4900
250
0.88 Colorcoat
®
13.81
7300
6700
260
1.25 Colorcoat
®
19.61
8300
9300
280
23.50
8700
10500
300
1.5 Colorcoat
®
NA
NA
NA
NA
1100
1250
1350
1450 1550 1800
NA
1900
®
Colorcoat . The standard finish is Interior Liner. Other finishes and materials are available subject to minimum order quantity.
7
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D46 Perf (10%)
D46 Acoustic structural deck range Perf (10%) D46 Perf (10%) Acoustics D46 D46 Perforated 10.7% of exposed area The decks illustrated on this page are available with perforated Perf (10%) 13.0% of cover area webs to provide acoustic absorption. Two different open area D60 percentage figures are in general use and both are shown. The Perf (13%) D60 percentage of exposed area is the open area divided by the Perf (13%) exposed area of steel following around the profiles. The percentage of cover area is the open area divided by the plan D60 Perforated D60 13.9% of exposed area area of the soffit. The perforating patterns are illustrated here Perf (13%)
Cover width 900 105
46
67 225
Cover width 800 90
60
64
D60 of cover area 19.6%
D46, D60 and D100 use perforating pattern 4546 4.5mm holes at 6.3mm triangular centres. Pattern open area 46%.
60
D159 uses perforating pattern 3327 3.3mm holes at 6.0mm triangular centres. Pattern open area 27%. Other perforating patterns or fully perforated deck may be available, please enquire if required.
o
6.3Perf mm
(13%)
200
D100 Perf (12%)
Cover width 700
D100
D100 Perforated Perf (12%)
109
63
13.3% of exposed area 21.1% of cover area D100
100 233.3
Perf (12%)
D100
Perf (12%) Cover width 750
D159 D135 Perf (8%) D159 Perforated Perf D159 7.6% of exposed area
108
142
38
Perf (8%) 14.2% of cover area
159
D135
D159 Perf Perf (8%) D159
250
Perf (8%)
D135range (Corus Holland ) Acoustic structural deck Perf Cover width 930
D153 These profiles are manufactured by Corus in Holland and D135 Perf may be subject to minimum order requirements and extended Perf lead times. For further information please contact our Sales Department D153 D135, D153, D158 and D200 use perforating pattern P3L-5 3.0mm holes at 5.5mm square centres. Pattern open area 23.5%.
Perf D153 D158 Perf Perf
165
D135 Perforated
43
145
6.1% of exposed area 10.0% of cover area
137 310 Cover width 840 161
D153 Perforated
40
119
6.2% of exposed area 11.0% of cover area
153 280 Cover width 750 131
D158 Perforated
40
119
D153HL600/130 6.2% of exposed area D158 Perf 12.4% of cover area Perf
158 250 Cover width 750
D158 D200 Perf Perf
D200 Perforated
170
5.0% of exposed area 10.0% of cover area
75
205
205
D158 D200 Perf
375
Perf
D200
HL600/130 Acoustic structural linerPerftray Perf (33%) HL130/600 uses perforating pattern 3033 3.0mm holes at 5.0mm triangular centres. Pattern open area 33%
D200 Perf
38.50
60
HL130/600 Perforated
130
27.3% of exposed area 27.3% of cover area Cover width 600
8
D46 Perforated
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Material
Gauge & finish mm
Steel
0.7 Colorcoat ® 0.7 Galvatite +
®
® 0.9 Galvatite +
Aluminium
1.2 Plain+ ®
D60 Perforated
Steel
0.7 Colorcoat ® 0.7 Galvatite + ® 0.9 Galvatite +
Aluminium
D100 Perforated
® ® 1.2 Galvatite & Colorcoat + + 0.9 Stucco
1.2 Plain+ ®
Steel
D159 Perforated
® ® 1.2 Galvatite & Colorcoat + + 0.9 Stucco
0.7 Colorcoat ® 0.7 Galvatite + ® 0.9 Galvatite +
Aluminium
Steel Aluminium
Weight kg/m2
Load/Span maximum Single Span mm
Load/Span maximum Double Span mm
Minimum Minimum self curve factory m curve mm
Maximum Cantilever mm
6.49
2300
2300
55
400
475
6.49
2300
2300
55
400
475
8.35
2600
3000
65
400
550
11.15
2800
3800
75
NA
600
2.89
1600*
1800
55
400
325
3.86
2000
2400
65
NA
400
7.13
2800
2800
70
NA
600
7.13
2800
2800
70
NA
600
9.17
3200
3700
80
NA
675
12.24
3500
4500
85
NA
725
3.18
2200
2300
70
NA
475
4.24
2500
3000
80
NA
525
8.45
4100
3200
110
NA
850
8.45
4100
3300
110
NA
850
10.88
4400
4400
120
NA
975
® ® 1.2 Galvatite & Colorcoat + + 0.9 Stucco
14.52
4900
5700
125
NA
1050
3.77
3200
2900
110
NA
700
1.2 Plain+
5.03
3500
3900
120
NA
775
® ® 1.25 Galvatite & Colorcoat + + 1.5 Plain
17.80
6500
6800
220
NA
1400
7.40
5000
4900
220
NA
1100
®
®
D200 Perforated
D153 D135 D158 Perforated Perforated Perforated
Colorcoat . The standard finish is Interior Liner, however HPS 200 Ultra is also available. Other finishes and materials are available subject to minimum order quantity. + minimum quantity requirements and longer lead times may apply * Span limited by 2kN/m line load
Steel
Steel
Steel
Steel
0.75 Colorcoat
®
8.92
5000
3600
150
0.88 Colorcoat
®
10.46
5200
4500
160
1100
1.25 Colorcoat
®
14.86
5800
6300
180
1200
0.75 Colorcoat
®
9.86
5300
3800
165
0.88 Colorcoat
®
11.57
5900
4900
175
1150
1.25 Colorcoat
®
16.45
6500
6900
195
1250
0.75 Colorcoat
®
11.05
5600
4200
170
0.88 Colorcoat
®
12.96
6000
5400
180
1300
1.25 Colorcoat
®
18.42
6700
6800
200
1400
0.75 Colorcoat
®
11.18
3900
2600
250
0.88 Colorcoat
®
13.12
5500
4200
260
1200
1.25 Colorcoat
®
18.63
7800
7000
280
1700
22.33
8300
8200
300
1.5 Colorcoat
®
NA
NA
NA
NA
NA
1000
1100
1250
850
1800
®
HL130/600 Perforated
Colorcoat . The standard finish is Interior Liner. Other finishes and materials are available subject to minimum order quantity.
Material
Gauge & finish mm
Steel
0.75 Colorcoat 1.00 Colorcoat
®
Weight kg/m2
Load/Span maximum Single Span mm
Load/Span maximum Double Span mm
Maximum Cantilever mm
®
8.16
3500
2700
850
®
10.90
4800
4000
1100
Colorcoat . The standard finish on HL130/600 is textured polyester
+ minimum quantity requirements and longer lead times may apply.
9
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Tested acoustic systems
Rockwool Hardrock DD Roofing Board, 210mm (in 2 layers 105 + 105mm) Mechanically fastened single ply membrane
Rockwool Acoustic Infill - for sound absorption and reduction Frequency (Hz)
125
250
500
1K
2K
4K
Sound absorption 0.55
0.94
1.09
0.95
0.59
0.44
coefficient
Weighted Sound Absorption Coefficient W = 0.6(LM) Noise Reduction Coefficient NRC = 0.90 Absorption Classification Class C Weighted Sound Reduction Index Rw = 39dB. Polythene vapour control layer (VCL), 0.22mm
Corus Panels and Profiles D60 web perforated deck
Rockwool Acoustic Infill D60
Rockwool Hardrock Split Layer - for sound absorption and reduction Frequency (Hz)
125
250
500
1K
2K
4K
Sound absorption
0.42
1.27
1.20
1.00
0.55
0.33
coefficient
Fully bonded single ply membrane system
1.5mm thick PVC single ply membrane fully adhered
• Weighted Sound Absorption Coefficient W = 0.55(LM) • Weighted Sound Reduction Index Rw = 39dB • Average Sound Reduction = 40.7dB For full details of system refer to Rockwool Acoustic Test Database ref A405 & Absorp 12
100mm thick Hardrock Dual Density SPA 2mm thick aluminium cored vapour control layer
PIR – for sound reduction • Kingspan insulation (SRL test report C/00/5L/7950/1)
• Weighted Sound Reduction Index Rw = 27dB
• Mechanically fastened single ply membrane system
• Kingspan Thermaroof TR26 (85mm) • Polythene vapour control layer • Corus D60 0.7mm steel deck PIR + Rubbertech – for sound reduction • Kingspan insulation (SRL test report C/03/5L/0830/2)
• Weighted Sound Reduction Index Rw = 35dB
• Mechanically fastened single ply
10
Corus Panels and Profiles D60 web perforated deck
Rain noise Approved Document E, 2004 Amendment requires construction of new school buildings to follow guidance provided by Building Bulletin 93. BB 93 advises designers to consider the effect of impact noise from rain at an early stage of the roof design in order to minimise disturbance within the building. What constitutes a problem level of rain noise is subjective. Roof systems employing a weatherproofing layer in full contact with insulation, supported by a metal deck are not usually problematic in practice. However for more critical applications rain noise may be reduced by the selective specification of the insulation system, and to a lesser extent the membrane, the fixing system, and the vapour control layer.
membrane system
• Kingspan Thermaroof TR26 (85mm) • Rubbertech R10 Acoustic Membrane • Polythene vapour control layer • Corus D60 0.7mm steel deck
50mm thick Hardrock Dual Density TFA
Rain generated impact sound transmission is measured by a test to Draft International Standard ISO 140-18.
A tank positioned 3.5m above the test roof is filled with water and consistently recharged. The perforated base area, height and flow rate are calibrated to ensure a rainfall intensity of 0.67 Lmin/m³ (40mm/h). Sound intensity measurements are taken below the roof construction in the frequency range of 50 Hz to 5000 Hz. Indicative sound level test results on D60 0.7mm deck are between 52 - 60dB. The sound intensity level measures the amount of sound being transmitted through the roof and therefore the lower this figure is, the better. Further details, test reports and details of other combinations are available from Rockwool Limited and Kingspan Insulation Limited respectively.
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Technical information Fire rating All non perforated deck sheets provide a fire rating of Class 1 to BS476: Part 7 and Class O in accordance with current Building Regulations.
Fixing Profile
Main fixings at ridge and eaves
Main fixings (Intermediate)
Side lap fixing
D32s1000, D35
every pitch
every other pitch*
not essential**
D46 -> D200
every pitch
every pitch
450mm centres
D210
every pitch
every pitch
350mm centres
HL 130/600
4 per tray
3 per tray
450mm centres
D210 requires alignment cleats to prevent profile spread
**Side lap fixing is not essential where using a fully supported under lap,
*Every other pitch is based on always starting with a fixing in the first pitch
otherwise it’s recommended to fix at 450mm centres.
of every sheet, and a profile pitch of 200mm or less.
Extended end laps Sheet lengths in excess of 12 metres are not practical for installation on site and may also be subject to delivery restrictions. Extended end laps can be used to create a double span whilst keeping the deck length to a minimum. Load span data for double spanning continuous sheet can conservatively be applied, provided these rules are followed.
The end lap must extend into 10% of each span and must be tail fixed by means of 5.5mm diameter self drilling steel stitching screws connecting each web (not the flange) of the overlying profile, to the web of the underlying profile, one fixing in each web (2 per pitch or the sheet) at each end of the end lap. The web is the inclined upright
5.5mm diameter self drilling steel stitching screws connecting each web
part of the profile (as opposed to the horizontal flanges). The deck is fixed to the support in the normal way. The web fixings must not be made through perforated sections of webs.
Every web stitched at the end of the lap
10% of span
10% of span
Total overlap 20% of span
Fixing to support
Material specification Galvanised steel: Corus Galvatite, hot dip zinc coated steel EN 10326-S280GD+Z275. Guaranteed minimum yield stress 280N/mm2. Minimum zinc coating mass 275g/m2 total both sides. (Except D159 which uses EN 10326-S320GD+Z275) Colorcoat® steel (standard decks): Corus Galvatite, hot dip zinc coated steel EN 10326-S220GD+Z150 substrate, with Colorcoat® Interior Liner 15 micron coating to interior, colour bright white.
Colorcoat® steel (D159): Corus Galvatite, hot dip zinc coated steel EN 10326-S320GD+Z150 substrate, with Colorcoat® Interior Liner 15 micron coating to interior, colour: bright white.. Colorcoat® steel (Corus Holland): Corus Galvatite, hot dip zinc coated steel EN 10326-S320GD+Z175 substrate, with Colorcoat® Interior Liner 15 micron coating to interior, colour: Hamlet RAL 9002 for Corus Holland decks
Aluminium: Stucco embossed or plain Aluminium. Aluminium alloy to BS EN 4851/2/3/4:1995. Grade 3105 with stucco embossed finish, Grade 3103 with plain mill finish.
0845 30 88 330 11
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Built up systems on structural decking System with outer sheet perpendicular to deck
Corus Panels and Profiles Top Sheet Insulation Quilt Corus Panels and Profiles Structural Deck spanning between rafters TH38 top hat spacing 1000mm
InstaL2oc bracket 130mm high To be fixed to top hat with 2 No. 5.5mm diameter drill screws
InstaL2oc bar spacing 1500mm
TH38 1.6mm galv. steel top hat to be fixed through both flanges to every deck top flange with SFS 50 25 Intec Bulbtite rivets 38 BTR 6604/6/4W, through 5.3mm pilot holes
System with outer sheet parallel to deck
Corus Panels and Profiles Top Sheet
Insulation quilt
TH38 top hat and InstaL2oc bar spacing 1500mm
InstaL2oc bracket 130mm high To be fixed to top hat with 2 No. 5.5mm diameter drill screws Corus Panels and Profiles Structural Deck spanning between purlins InstaL2oc bracket spacing 1000mm
0845 30 88 330 12
Notes
U VALUE - 0.25W/m2K
Maximum wind suction on outer sheet (limited by the Bulbtite rivets fixing the top hat to to deck) = 1.33 kN/m2 for steel deck (= 1.04 kN/m2 for aluminium deck). In the case of greater wind load, check with Corus Panels & Profiles Technical Department. The Structural Deck should be specified to resist all imposed loading.
Use quilt 0.040W/mK 170mm thick with 130mm InstaL2oc bracket (total void height 168mm). The insulation is to be installed with no gaps and tucked under the InstaL2oc bar. U values are calculated according to approved Document L2 2002, based on the spacer arrangements shown in this drawing.
corus SRD 16pp brov3:Corus SRD brochure FINAL 15/07/2009 09:20 Page 13
Structural design General Use The design and application of profiled roofing and cladding is covered by BS 5427 : Part 1 : 1996 Code of practice for the use of profiled sheet for roof and wall cladding on buildings. Part 1. Design.
Fragility Non-fragility requirements are determined by ACR(M)001:2000 Test For Fragility of Roofing Assemblies (second edition) see next section. Loading Calculate loads in accordance with: BS 6399 Part 2 :1997 Code of Practice for wind loads BS 6399 Part 3 :1988 Code of Practice for imposed roof loads (including snow and snow drifting).
Structural Structural performance of steel sheeting is covered by BS 5950 : Part 6 : 1995 Structural use of steelwork in building. Code of practice for design of light gauge profiled steel sheeting. Diaphragm design is covered by BS 5950 : Part 9 : 1994 Structural use of steelwork in building. Code of practice for stressed skin design
Concentrated Load Concentrated load is assumed to act over a square with sides of 125mm. BS 5950 : Part 6 considers that concentrated load is equivalent to line loading as follows. Concentrated load
Line load
0.9 kN
1.5 kN/m
1.8 kN
3.0 kN/m
Eurocodes At the time of publishing this literature the above British Standards are current and applicable, however over time they are being replaced by Eurocodes, as follows. Each part has to be used with its National Annex, which gives nationally determined factors. BS EN 1991 Eurocode 1: Basis of design and actions on structures Part 1 Basis of design Part 2-1 Densities, self-weight and imposed loads Part 2-2 Actions on structures exposed to fire Part 2-3 Snow loads Part 2-4 Wind actions BS EN 1993 Eurocode 3 : Design of steel structures Part 1-3 Cold formed thin gauge members and sheeting
Imposed roof loading Wind load kN/m2
Snow load kN/m2
Uniformly distributed imposed load kN
Concentrated load kN
1.5kN/m2
1.8kN
0.6kN/m2
0.9kN
Roofs with access
As determined
As determined
by BS 6399
by BS 6399
Part 2
Part 3
Roofs with no access
As determined
As determined
by BS 6399
by BS 6399
Part 2
Part 3
The imposed loads are considered to act the same at the same time as dead load, but not at the same time as each other.
Span types
Single
One sheet per two supports
Double
One sheet per three supports
Multi
One sheet per four or more supports
span
span = space between two supports
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Diaphragm action Function of diaphragm action
Seam Fasterners
• Transfers wind load from walls to brace walls running perpendicular • Replaces in plane roof bracing
Benefits
Purlin
• Removes visual clutter in the roof - popular with architects • Saves money by removing some of the steel elements
Rafter Purlin/Rafter connector
Edge Member (Purlin)
Sheet/Shear connector fastener Shear Connector
Sheet Purlin Fastener
Limitations
Irregular roof plan showing division into diaphragms
• Diaphragm area must be surrounded by at least 3 braced walls
C
• Deck must be fixed to the structure on all 4 edges of diaphragm area
Vertical Bracing Roof Light
To design, we need – • Drawings, showing deck layout and braced walls
B A
• Line loads at diaphragm edges
Diaphragm analysis program • All the input data seen below must be supplied by the building designer
0845 30 88 330 14
• The analysis assumes that the diaphragm area is rectangular
D
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Roof safety 5.1 ACR(M)001:2000 Test for fragility of roofing assemblies (second addition) ACR(M)001:2000 was produced by the Health and safety executive (HSE), Metal Cladding and Roofing Manufacturers
Association (MCRMA), National Federation of Roofing Contractors (NFRC), Association of Rooflight
Manufacturers (ARM), British Cladding Council (BCC), Fibre-cement Manufacturers Association (FMCA), INFORM.
Summary of test method
Other test conditions specified in the document also have to be met. Corus Panels & Profiles carried out an extensive test program consisting of 360 tests to show the following results. This data only applies to Corus Panels & Profiles products, which must be fixed as indicated.
Summary of classification
Sheeting is fixed to a test rig specified in the document and a drop test is conducted, which involves releasing a 45kg sand bag from a height of 1.2m. The sand bag must impact the sample:1. within 150mm of the centre of the test sample.
Fragile Impactor (sand bag) passes through assembly on first drop. Class C non-fragile Impactor is retained on the assembly for 5 minutes after 1st drop. Class B non-fragile Impactor is retained on the assembly for 5 minutes after 2nd drop in the same place as the 1st drop.
2. within 300mm of a support point, at least 150mm away from the support. 3. within 150mm of the edge of the sheet, adjacent to the underlap with the other sheet, at the weakest position.
Class A non-fragile On conclusion of the 2nd drop there is no significant damage to the assembly.
Non-fragility classes for Corus Panels and Profiles roof decking Corus Panels and Profiles Product group D32s 1000 0.7mm min. deck sheets D35 0.7mm min. deck sheets D46 -> D210
Maximum span
Fixing Specification
as shown in the Profile selector
5.5mm ø self drill screws without washers
Number of fixings1
Span type
Minimum end distance2 mm
Non-fragility class
every other pitch3
single double & multi single double & multi single double & multi
50 50
C B
50
B
50
B
every other pitch3 every pitch
1
The number of fixings per sheet must be increased proportionally when the sheet is cut at rake i.e. at hips. Min end distance is the minimum dimension between the centre line of the screws to the end of the sheet 3 Every other pitch is based on always starting with a fixing in the first pitch of every sheet. 2
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www.coruspanelsandprofiles.co.uk Care has been taken to ensure that this information is accurate, but Corus Group Plc, including its subsidiaries, does not accept responsibility or liability for errors or information which is found to be misleading. Copyright 2009 Corus Designed by Plum Design & Advertising
Corus Panels and Profiles Shotton Works Deeside Flintshire CH5 2NH Tel: +44 (0) 845 30 88 330 E-mail:
[email protected] E-mail:
[email protected] www.coruspanelsandprofiles.co.uk
P&PRD07:5000:UK:08/2009