About HiRib™ 680
Manufactured from High-Tensile steel, Fielders HiRib™ 680 boasts a bold, deep troughed profile. Able to be fixed down to a 1 degree pitch, achieving multiple spans of up to 3.4 meters, the uses for HiRib™ 680 are numerous. Domestic applications such as carport and veranda roofing to commercial and industrial roofing and walling projects, HiRib™ 680 has you covered. The strong profile of HiRib™ 680 roofing combined with a lighter gauge high-tensile steel provides optimum strength, allowing for larger spans at a minimum cost, plus making walking between ribs safer for maintenance purposes. HiRib™ 680 has fewer fasteners which means less installation time making this a very practical and highly affordable product and perfect budget solution.
Available in an extensive range of colours and finishes in COLORBOND® steel and ZINCALUME®, HiRib™ 680 is sure to blend seamlessly or contrast brilliantly with the surrounding environment.
Material Specifications
| Property | Notes | ||||
| Base Metal Thickness (mm) | 0.42 | 0.48 | 0.60 | BMT | |
| Total Coated Thickness (mm) | 0.47* | 0.53* | 0.65* | TCT | |
| Mass / Unit Length | ZINCALUME® | 3.30 | 3.77 | 4.70 | kg/m |
| COLORBOND® | 3.36* | 3.84* | 4.78* | ||
| Mass / Unit Area | ZINCALUME® | 4.34 | 4.96 | 6.18 | kg/m2 |
| COLORBOND® | 4.42* | 5.05* | 6.29* | ||
| 2nd moment of area about principal axis (103 mm4) | Ix | 124 | 142 | 163 | |
| Iy | 20090 | 22960 | 26300 | ||
| Section modulus about principal axis (103 mm3) | Zx | 4 | 4 | 5 | |
| Zy | 52 | 60 | 68 | ||
| Warping Constant (109 mm6) | Iw | 7 | 8 | 9 | |
| Torsion Constant (mm4) | J | 23 | 35 | 52 | |
| Minimum Yield Strength | G550 | Base Steel Designation | |||
| Coating Class | Z600 (Heritage Galvanised) AM100 (COLORBOND®) AM125 (ZINCALUME®) AM150 (COLORBOND® Ultra) Z450 (Galvanised) | Minimum Coating g/m2 of Zinc - Aluminium |
|||
| Coverage (mm) | 680 | ||||
| Tolerance | Sheet Length ±7mm Cover Width ±4mm | ||||
| Thermal Expansion | 2.9mm average per 5m at 50°C change | ||||
Note:
- HiRib™ 680 is manufactured from materials in accordance to AS 1397 and AS 2728. It is to be installed in accordance with AS 1562 and HB 39.
- The sectional properties are theoretical values per sheet width. These properties are gross values only.
- *is based on Standard COLORBOND® single-sided material. For other painted steel options please contact a Fielders® representative.
Rainfall Capacity
For further information, please refer to sections "Rainfall Intensity" and "Water Carrying Capacity and Rainwater Run-Off".
Figure HR RC NC 001
Maximum Roof Length (m)
| Roof Slope (degrees) | Rainfall Capacity (mm/hr) | ||||||
| 100 | 150 | 200 | 250 | 300 | 350 | 400 | |
| 1 | 439 | 293 | 219 | 176 | 146 | 125 | 110 |
| 2 | 621 | 414 | 310 | 248 | 207 | 177 | 155 |
| 3 | 760 | 507 | 380 | 304 | 253 | 217 | 190 |
| 4 | 878 | 585 | 439 | 351 | 293 | 251 | 219 |
| 5 | 981 | 654 | 491 | 393 | 327 | 280 | 245 |
Note:
- Minimum recommended slope is 1°. Sheet lengths greater than 24m are not recommended due to thermal expansion and contraction.
Non-Cyclonic Load Span
Figure HR NC 002 End Spans, Internal Spans and Overhangs illustrates the terminology end spans, internal spans, and overhangs and their reference to the supporting substructure. This terminology has been used in the following Maximum Recommended Span and Wind Load Capacity tables.
Figure HR NC 002 End Spans, Internal Spans and Overhangs
Wind Load Capacity: Limit State Design: Crest Fixed: 0.42mm BMT
| Span (mm) | Single Span | End Span | Internal Span | |||
| Serv. (kPa) | Strength (kPa) | Serv. (kPa) | Strength (kPa) | Serv. (kPa) | Strength (kPa) | |
| 900 | - | - | 3.40 | 5.67 | - | - |
| 1200 | - | - | 2.76 | 4.19 | 3.31 | 5.30 |
| 1500 | 4.05 | 4.28 | 2.23 | 3.32 | 2.83 | 4.19 |
| 1800 | 3.10 | 3.55 | 1.80 | 2.74 | 2.41 | 3.46 |
| 2100 | 2.30 | 2.94 | - | - | 2.07 | 2.94 |
| 2400 | 1.64 | 2.43 | - | - | 1.80 | 2.94 |
| 2700 | 1.12 | 2.02 | - | - | - | - |
| 3000 | 0.75 | 1.73 | - | - | - | - |
| 3300 | 0.52 | 1.54 | - | - | - | - |
| 3600 | 0.44 | 1.47 | - | - | - | - |
| 3900 | - | - | - | - | - | - |
Note:
- Values in the table above have been generated based on testing into steel supports with at thickness of 1.5 mm.
- Values in italics are estimates based on trend lines fitted to the test data.
- Values are based on no insulation under the sheeting.
- Serv. denotes serviceability
Wind Load Capacity: Limit State Design: Crest Fixed: 0.48mm BMT
| Span (mm) | Single Span | End Span | Internal Span | |||
| Serv. (kPa) | Strength (kPa) | Serv. (kPa) | Strength (kPa) | Serv. (kPa) | Strength (kPa) | |
| 900 | - | - | 4.60 | 8.18 | - | - |
| 1200 | - | - | 3.60 | 5.89 | 4.49 | 7.60 |
| 1500 | 4.79 | 6.15 | 2.77 | 4.57 | 3.75 | 5.89 |
| 1800 | 3.67 | 4.85 | 2.10 | 3.71 | 3.11 | 4.79 |
| 2100 | 2.71 | 3.97 | - | - | 2.58 | 4.02 |
| 2400 | 1.91 | 3.33 | - | - | 2.16 | 3.45 |
| 2700 | 1.28 | 2.86 | - | - | - | - |
| 3000 | 0.81 | 2.49 | - | - | - | - |
| 3300 | 0.50 | 2.20 | - | - | - | - |
| 3600 | 0.35 | 1.97 | - | - | - | - |
| 3900 | 0.37 | 1.77 | - | - | - | - |
Note:
- Values in the table above have been generated based on testing into steel supports with at thickness of 1.5 mm.
- Values in italics are estimates based on trend lines fitted to the test data.
- Values are based on no insulation under the sheeting.
- Serv. denotes serviceability
Wind Load Capacity: Limit State Design: Valley Fixed: 0.42mm BMT
| Span (mm) | Single Span | End Span | Internal Span | |||
| Serv. (kPa) | Strength (kPa) | Serv. (kPa) | Strength (kPa) | Serv. (kPa) | Strength (kPa) | |
| 600 | - | - | 11.5 | 15.75 | - | - |
| 900 | - | - | 6.61 | 8.87 | 7.27 | 10.96 |
| 1200 | - | - | 4.46 | 5.90 | 5.00 | 7.18 |
| 1500 | 2.62 | 4.13 | 3.29 | 4.30 | 3.74 | 5.17 |
| 1800 | 1.70 | 3.36 | 2.56 | 3.32 | 2.95 | 3.95 |
| 2100 | 1.17 | 2.83 | 2.08 | 2.67 | 2.42 | 3.15 |
| 2400 | 0.85 | 2.43 | - | - | 2.03 | 2.59 |
| 2700 | 0.64 | 2.13 | - | - | - | - |
| 3000 | 0.50 | 1.89 | - | - | - | - |
| 3300 | 0.40 | 1.70 | - | - | - | - |
| 3600 | 0.32 | 1.54 | - | - | - | - |
| 3900 | 0.27 | 1.41 | - | - | - | - |
Note:
- Values in the table above have been generated based on testing into steel supports with at thickness of 1.5 mm.
- Values are based on no insulation under the sheeting.
- Serv. denotes serviceability
Wind Load Capacity: Limit State Design: Valley Fixed: 0.48mm BMT
| Span (mm) | Single Span | End Span | Internal Span | |||
| Serv. (kPa) | Strength (kPa) | Serv. (kPa) | Strength (kPa) | Serv. (kPa) | Strength (kPa) | |
| 600 | - | - | - | - | - | - |
| 900 | - | - | 6.99 | 9.63 | - | - |
| 1200 | - | - | 4.84 | 6.66 | 5.99 | 9.62 |
| 1500 | 5.41 | 5.57 | 3.78 | 4.59 | 4.57 | 6.65 |
| 1800 | 3.40 | 4.27 | 3.03 | 3.42 | 3.66 | 4.58 |
| 2100 | 2.29 | 3.42 | 2.52 | 3.15 | 3.04 | 3.41 |
| 2400 | 1.63 | 2.82 | 2.14 | 3.78 | 2.58 | 3.14 |
| 2700 | 1.21 | 2.38 | - | - | - | - |
| 3000 | 0.92 | 2.04 | - | - | - | - |
| 3300 | 0.72 | 1.78 | - | - | - | - |
| 3600 | 0.58 | 1.57 | - | - | - | - |
| 3900 | 0.47 | 1.40 | - | - | - | - |
Note:
- Values in the table above have been generated based on testing into steel supports with at thickness of 1.5 mm.
- Values are based on no insulation under the sheeting.
- Serv. denotes serviceability
Maximum Recommended Roof Cladding Span
| Wind Region | Base Metal Thickness (mm) | Single (mm) | End (mm) | Internal (mm) |
| A | 0.42 | 2650 | 2500 | 3000* |
| 0.48 | 3000* | 2850 | 3000* | |
| B | 0.42 | 2250 | 1850 | 2300 |
| 0.48 | 2700 | 2400 | 3000* |
Importance Level 2
Terrain Category 3
Maximum Roof Height H = 10m
External Pressure Coefficients:
Cp,e = -0.65 (walling)
Cp,e = -0.9 (roofing)
Internal Pressure Coefficient:
Cp,i = 0.2
Local Pressure Factors:
KL = 2.0
Table HR RS NC 002 - HiRib™ 680 Non-Cyclonic
Note:
- Maximum roofing spans comply with both strength and serviceability wind pressure requirements.
- Values in italics are conservative estimates based on extrapolated trend lines fitted to the test data.
- Roof data is based on crest fixed installation, wall data is based on valley fixed data.
Maximum Recommended Wall Cladding Span
| Wind Region | Base Metal Thickness (mm) | Single (mm) | End (mm) | Internal (mm) |
| A | 0.42 | 2350 | 3000* | 3000* |
| 0.48 | 3000* | 3000* | 3000* | |
| B | 0.42 | 2250 | 2500 | 2800 |
| 0.48 | 2950 | 3000* | 3000* |
Importance Level 2
Terrain Category 3
Maximum Roof Height H = 10m
External Pressure Coefficients:
Cp,e = -0.65 (walling)
Cp,e = -0.9 (roofing)
Internal Pressure Coefficient:
Cp,i = 0.2
Local Pressure Factors:
KL = 2.0
Table HR RS NC 001 - HiRib™ 680 Non-Cyclonic
Note:
- Maximum roofing spans comply with both strength and serviceability wind pressure requirements.
- Values in italics are conservative estimates based on extrapolated trend lines fitted to the test data.
- Roof data is based on crest fixed installation, wall data is based on valley fixed data.
Pierce Fastening
Fasteners must be selected to match the life expectancy of the cladding material. Recommendations from fastener manufacturers should be sought. Only fasteners complying with AS 3566:2002 and those that are compatible with the roofing material should be used for its fastening.
Pierce Fixing
| Fixing Supports | Crest Fixing | Valley Fixing | Side Lap Fixing |
| Steel 1.0 to 3.5mm | 12g-14x75mm Hex Head Tek Screws with seal | 10g-16x16mm Hex Head Tek Screws with seal | 10g-16x16mm Hex Head Tek Screws with seal |
| Timber Hardwood | 14g-10x90mm Hex Head Type 17 Screws with seal | 12g-11x25mm Hex Head Type 17 Screws with seal | |
| Timber Softwood | 14g-10x100mm Hex Head Type 17 Screws with seal | 12g-11x40mm Hex Head Type 17 Screws with seal | |
| Metal Battens (0.55 to 1.0mm) | 14g-10x75mm Hex Head Type 17 Screws with seal | 15g-15x25mm Hex Head Tek Screws with seal |
Crest and Valley Fasteners locations
Either four Crest or four Valley Fixings.
Side Lap Fastening
It may be necessary to use side lap fasteners to maintain a weatherproof side lap. One or more fasteners are recommended when using HiRib at maximum spans, for walling cladding. Lap fasteners are also required alongside each valley fastener.
Notes:
1. All fasteners used externally should be fitted with an EPDM seal (washer).
2. Do not use punches to form fastener holes.
Insulation
Care needs to be taken when installing insulation with roof sheeting. When insulation thickness up to 50mm are installed the screws detailed in Table HR PF NC 001 may need to be increased depending on the thickness and density of the insulation. When the screw is properly tightened into metal there should be a minimum of three (3) threads protruding past the support being fixed in to. For timber the screw must penetrate the timber as much as the screws detailed in Table HR PF NC 001 do without insulation.
For insulation thicknesses greater than 50mm Fielders® recommend the use of a thermal spacer to help maintain Rw values as well as minimising any bulging in the profile caused by the insulation.
HiRib 680® Installation Procedure
For installation procedures see section “Typical Pierce Fix Installation Guide”. For general handling instructions refer to section “Maintenance and Care”.
Turning of Roof Sheeting Ends
Refer to section “Flashings, Cappings & Ends of Sheets”.
Maximum Sheet Length
See section “Thermal Expansion and Contraction of Steel Sheeting”.