FIVE RIB

Queensland Sheet Metal (QSM) Five Rib sheeting is a great option for many roofing and walling needs. Made for a wide range of applications across domestic and commercial projects, five rib roof sheeting has a range of great benefits. It is made to last and is well known in the roofing industry for its versatility and reliability. It is tough, cost-effective and superb for design purposes.

Five Rib is available in an unequalled range of colours and finishes including Zincalume®, Colorbond®, MagnaFlow™ and the luxurious UniCote® LUX range.

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Features and Benefits

  • 762mm cover and 27mm rib height
  • Available in 0.42BMT and 0.48BMT
  • Hi-tensile steel – strong and lightweight
  • 2º minimum pitch
  • Cut to length
  • Versatility – suitable for commercial/industrial and residential roofing and wall cladding

Colours and Finishes

The Colorbond® steel colour swatches above have been reproduced to represent actual product colours as accurately as possible. However, we recommend checking your chosen colour against an actual sample of the product before purchasing, as varying light conditions, different screens and limitations of the printing process may affect colour tones.

The MagnaFlow™ colour swatches above have been reproduced to represent actual product colours as accurately as possible. However, we recommend checking your chosen colour against an actual sample of the product before purchasing, as varying light conditions, different screens and limitations of the printing process may affect colour tones. Equivalent colour names listed are trademarks of Bluescope Steel Limited and used only for comparison.

The UniCote® LUX swatches above have been reproduced to represent actual product finishes as accurately as possible. However, we recommend checking your chosen finish against an actual sample of the product before purchasing, as varying light conditions, different screens and limitations of the printing process may affect its appearance.

These swatches above have been reproduced to represent actual product finishes as accurately as possible. However, we recommend checking your chosen finish against an actual sample of the product before purchasing, as varying light conditions, different screens and limitations of the printing process may affect its appearance.

Installation Information

  • QSM Five Rib sheeting should be installed into the prevailing weather
  • Each sheet should be laid accurately to cleanly lap the adjoining roof sheet without over or under lapping
  • Where sheeting spans exceed 900mm for roofing and 1200mm for walling, install a side lap fastener mid-span
  • For roofing, the pan needs to be turned up at the peak and turned down at the eave
  • At the completion of each days work, the roof surface needs to be cleaned to remove all traces of metal debris and swarf. Typically this is achieved by air blower, hose down or sweeping.
  • Good trade practise should be applied, such as that contained in SA HB39:2015

General Information

Zincalume® – Aluminium / Zinc / Magnesium alloy coated steel coil, 125grams/m² coating weight. Metallic coating conforms to AS1397:2011. Suitable for ISO9223:2012 Atmospheric Classifications C1 – C3

Colorbond® – Pre-painted Aluminium / Magnesium / Zinc alloy coated steel coil, 100grams/m² coating weight. Metallic coating conforms to AS1397:2011, pre-painted finish conforms to AS/NZS2728:2013. Suitable for ISO9223:2012 Atmospheric Classifications C1 – C3

MagnaFlow™ – Pre-painted Zinc / Aluminium / Magnesium alloy coated steel coil, 240grams/m² coating weight. Metallic coating conforms to AS1397:2011, pre-painted finish conforms to AS/NZS2728:2013. Suitable for ISO9223:2012 Atmospheric Classifications C1 – C4

Sheeting max (kg/m2 of roof area)
Zincalume® Corrugated®
0.42mm BMT 4.28 4.35
0.48mm BMT 4.86 4.93

QSM Five Rib sheeting has been assessed for suitability for use in non-cyclonic roof and wall cladding applications in accordance to AS1562.1:2018, applicable to both residential and commercial applications. Metallic coated materials comply with AS1397:2011 and pre-painted materials comply with AS/NZS2728:2013.
Installation of product shall be in compliance with AS1562.1:2018 and SA HB-39:2015, National Construction Code (NCC) and relevant QSM Technical Bulletins.

QSM Five Rib sheeting will give excellent durability in almost all locations. It is however important to choose the correct coating for each application environment as shown in the table below. Durability recommendations do vary based on the application of the product, in roofing or walling installations. Please read the tables below carefully.

Roof Sheeting – Site Exposure Condition

Suitability of coating type Mild
(ISO Category 1-2)
Moderate
(ISO Category 2)
Marine
(ISO Category 3)
Severe Marine
(ISO Category 4)
Wall cladding – distance from marine environment
Zincalume® Yes Yes No No >1km
Colorbond® Yes Yes Yes No >1km
MagnaFlow™ Yes Yes Yes Yes *

* Severe marine begins 100 – 400m from the coast and may extend inland depending on local conditions.

These are general guidelines only. Building location, design and aspect need to be taken into account. To ensure warranty will be given, check with QSM before using in these areas.

Foot traffic limits for QSM Five Rib sheeting are based on the accepted industry practise of designing traffic limitations on typical maintenance work. This equates to a single person with a small tool kit up to a total mass of 110kg (1.1kN load).

Walking on QSM Five Rib profile requires that feet are placed only in the pan of the sheet, never on the ribs.

Foot Traffic Limited Spans (mm)

BMT Span Type Maximum Span (mm)
0.42mm Internal 1700
0.42mm Double 1350
0.42mm End 1350
0.48mm  Internal 2300
0.48mm Double 1700
0.48mm End 1700

Testing has been undertaken in accordance to AS1562.1:2018 and AS4040.0:1992 (R2016) and AS4040.2:1992 (R2016, Amd.1 2018).

Due diligence needs to be applied to ensure that all materials are compatible. Corrosion may occur when incompatible materials are either in direct contact, immersed in a common electrolyte, receive inert drainage or drainage from incompatible materials.

As a general rule for metallic coated and pre-painted materials, always avoid direct contact with copper, lead, tantalised timber, Monel, uncoated steel, stainless steel and concrete/mortar.

Drainage from inert materials must not flow onto galvanised material. Inert materials include glass, aluminium, glazed ceramic tiles, pre-painted steel and metallic coated steel.

More highly corrosive environments require additional care, the effects of marine and industrial environments can extend long distances from the source and create unique corrosive challenges.

QSM are here to assist, speak to your representative for further assistance.

  • Roofing and cladding materials that are not exposed to rainfall should be washed down at least once every six months (more often in marine environments) to remove build-up of corrosive elements.
  • Prior to installation, materials must be kept clean and dry. Ensure that sheeting packs are covered, air flow is adequate to eliminate condensation and water is not allowed to pond. Should materials get wet, sheeting must be separated and thoroughly dried.
  • Sheeting should be handled with care to both avoid installer injury and damage to the product. Cutting of sheets must only be done with tin snips, shears or cold-cutting saw, so as to avoid the damage caused by abrasive cutting methods (i.e angle grinder).
  • QSM Five Rib sheeting is ordered cut to length.
  • Manufacturing tolerance on the length is +0/-15mm.
  • Delivery can usually be made within 24-48 hours of payment depending on location, quantity and availability.
  • Please ensure lengths are within the limit of local Transport Authority regulations.
  • Be sure that a suitable arrangement has been made for truck unloading as this is the responsibility of the receiver.

Technical Information

BMT Application Span Type Wind Class N1 Wind Class N2 Wind Class N3
0.42 Roofing Internal 1700 1700 1700
0.42 Roofing Double 1350 1350 1350
0.42 Roofing End 1350 1350 1350
0.42 Walling Internal 3000 3000 2700
0.42 Walling Double 2900 2250 1950
0.42 Walling End 2900 2250 1950
0.48 Roofing Internal 2300 2300 2300
0.48 Roofing Double 1700 1700 1700
0.48 Roofing End 1700 1700 1700
0.48 Walling Internal 3000 3000 3000
0.48 Walling Double 3000 2700 2550
0.48 Walling End 3000 2700 2550

Table based on testing in accordance to AS1562.1:2018, AS4040.0:1992 (R2016) and AS4040.2:1992 (R2016, Amd.1 2018) and wind loading to AS4055:2012. Internal spans must have both end spans reduced by 20%. Roof sheets are to be fastened with minimum 12 gauge screw and wall sheets are to be fastened with minimum 10 gauge screw, having a non-conductive sealing washer and minimum corrosion resistant coating of Class 4 per AS3566. Table based on fixing to minimum steel support thickness of 1.50mm BMT.

Wind Pressure Limit State Capacities – 3 Fasteners per Sheet

BMT Type Limit State Span (mm) Span (mm) Span (mm) Span (mm) Span (mm) Span (mm) Span (mm) Span (mm) Span (mm)
600 900 1200 1500 1800 2100 2400 2700 3000
0.42mm Internal Serviceability 5.40 5.40 3.75 2.76 2.10 1.64 1.29 1.01 0.80
0.42mm Internal Strength 8.60 7.17 5.75 5.24 4.74 4.09 3.52 3.07 2.69
0.42mm Double Serviceability 4.10 4.10 2.34 1.55 1.13 0.88 0.72 0.61 0.53
0.42mm Double Strength 6.24 6.24 4.81 4.00 3.49 3.14 2.88 2.69 2.53
0.42mm End Serviceability 4.10 1.40 2.34 1.55 1.13 0.88 0.72 0.61 0.53
0.42mm End Strength 6.24 6.24 4.81 4.00 3.49 3.14 2.88 2.69 2.53
0.48mm  Internal Serviceability 7.28 5.86 4.44 3.11 2.37 1.91 1.61 1.40 1.25
0.48mm  Internal Strength 9.42 8.51 7.60 6.60 5.60 4.70 3.70 2.70 1.80
0.48mm  Double Serviceability 4.54 4.54 3.52 2.70 2.05 1.55 1.15 0.83 0.56
0.48mm  Double Strength 8.10 8.10 7.46 6.38 5.37 4.50 3.70 2.73 1.75
0.48mm End Serviceability 4.54 4.54 3.52 2.70 2.05 1.55 1.15 0.83 0.56
0.48mm End Strength 8.10 8.10 7.46 6.38 5.37 4.50 3.70 2.73 1.75

Table based on testing in accordance to AS1562.1:2018, AS4040.0:1992 (R2016) and AS4040.2:1992 (R2016, Amd.1 2018), to be used in conjunction with AS1170.2:2011 (R2016). Internal spans must have both end spans reduced by 20%. Roof sheets are to be fastened with minimum 12 gauge screw and wall sheets are to be fastened with minimum 10 gauge screw, having a non-conductive sealing washer and minimum corrosion resistant coating of Class 4 per AS3566. Table based on fixing to minimum steel support thickness of 1.50mm BMT.

Fastener Selection

Fastening screws are to be hex head and must be fitted with a non-conductive sealing washer for both roof and wall applications. Screws must conform to AS3566 with a corrosion resistant coating to Class 4 as minimum. Use of load spreading washers for high wind zones and for the fixing of flashings is encouraged. Fastener lengths specified below are based on using 60mm blanket, thicker insulation may require increased screw lengths.

QSM Five Rib Screws (Non-Cyclonic only)

Application Fixing to Timber Fixing to Steel ?1.2 Fixing to Steel ?1.2
Crest Fixed Roof 12g x 65mm Type 17 or M6 x 50mm Roof Zips® M6 x 65mm Roof Zips® or 12g x 50mm Teks® M6 x 65mm Roof Zips® (up to 1.9mm) or 12g x 50mm Teks®
Valley Fixed Wall 12g x 25mm Type 17 or M6 x 25mm Roof Zips® 10g x 16mm Teks® (over 1.0mm) or M6 x 25mm Roof Zips® 10g x 16mm Teks® or M6 x 25mm Roof Zips® (up to 1.9mm)

When fixing to steel section of 0.75mm BMT or less, use Type 17 or proprietary hybrid point screw. Metal self-drilling screws (such as Buildex Teks®) should not be used in steel less than 1.0mm BMT. Buildex Roof Zips® may be used both in steel (up to 1.9mm) and timber.

Fastener Locations

Roofing: One fixing per crest

Walling: One fixing per pan, fasten adjacent to the overlapping rib

Minimum Slope (degrees)

Total Roof Run Length = TRRL

Rainfall intensity (mm/hr) TRRL 30m TRRL 40m TRRL 50m TRRL 60m TRRL 70m TRRL 80m TRRL 90m TRRL 100m TRRL 110m TRRL 120m TRRL 130m Max roof run length (m) at 2°min slope
150 2.0 2.3 2.9 3.6 105
175 2.0 2.0 2.7 3.5 4.3 5.2 90
200 2.1 2.9 3.8 4.8 5.9 7.1 78
225 2.0 2.9 3.9 5.1 6.3 7.7 9.2 70
250 2.0 2.7 3.8 5.1 6.5 8.0 9.7 12 63
275 2.3 3.5 4.8 6.3 8.0 9.9 12 15 57
300 2.0 2.9 4.3 5.9 7.7 9.7 12 15 17 52
325 2.2 3.6 5.2 7.1 9.2 12 15 17 20 48
350 2.7 4.3 6.2 8.3 11 14 17 20 24 45
375 2.0 3.2 5.1 7.2 9.7 13 16 19 23 42
400 2.0 2.1 3.8 5.9 8.3 12 15 18 22 39

Drainage capacity calculated in accordance to AS1562.1:2018

TECHNICAL MANUAL

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