About Mini-Flute
Offering versatile characteristics, Mini-Flute allows for maximum design freedom. The traditional ‘S’ profile maintains a heritage look and in contrast also works as an attractive cladding option on ground breaking architecturally designed buildings. It’s ability to be used vertically, horizontally or diagonally opens a range of stunning design options. While full-length sheets and wide coverage allow for quick installation.
Fielders® Mini-flute is available in COLORBOND® steel, ZINCALUME®, Heritage Galvanised and Stainless Steel, allowing the flexibility to create a modern appearance through to a rustic look.
Material Specifications
| Property | Notes | |||
| Base Metal Thickness (mm) | 0.42 | 0.48 | BMT | |
| Total Coated Thickness (mm) | 0.47* | 0.53* | TCT | |
| Mass / Unit Length | ZINCALUME® | 3.30 | 3.70 | kg/m |
| COLORBOND® | 3.36* | 3.77* | ||
| Mass / Unit Area | ZINCALUME® | 4.07 | 4.57 | kg/m |
| COLORBOND® | 4.15* | 4.65* | ||
| 2nd moment of area about principal axis (103 mm4) | Ix | 2 | 2 | |
| Iy | 22930 | 26200 | ||
| Section modulus about principal axis (103 mm3) | Zx | 1 | 1 | |
| Zy | 55 | 63 | ||
| Warping Constant (109 mm6) | Iw | 0 | 0 | |
| Torsion Constant (mm4) | J | 23 | 35 | |
| Minimum Yield Strength | G550 | Base Steel Designation | ||
| Coating Class | AZ150 (150g/m2) AZ200 (Ultra) Z450 (Galvanised) Z600 (Heritage Galvanised) | Minimum Coating g/m2 of Zinc - Aluminium |
||
| Coverage (mm) | 700 | |||
| Tolerance | Sheet Length ±7mm Cover Width ±4mm | |||
| Thermal Expansion | 2.9mm average per 5m at 50°C change | |||
Notes:
- Mini-Flute 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.
Load Span Tables
Figure MF NC 001 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 MF NC 001 End Spans, Internal Spans and Overhangs
Wind Load Capacity: Limit State Design: 0.42mm BMT
| Span (mm) | Single Span | End Span | Internal Span | |||
| Serv. (kPa) | Strength (kPa) | Serv. (kPa) | Strength (kPa) | Serv. (kPa) | Strength (kPa) | |
| 450 | 6.20 | 11.70 | 6.50 | 8.80 | 7.00 | 11.70 |
| 600 | 3.99 | 10.15 | 4.69 | 7.30 | 5.23 | 9.25 |
| 900 | 1.17 | 7.65 | 2.17 | 5.10 | 2.67 | 5.85 |
| 1200 | 0.35 | 5.70 | 1.00 | 3.95 | 1.33 | 4.30 |
| 1500 | - | - | 0.34 | 3.15 | 0.46 | 3.50 |
Note:
- Values in the table above have been generated based on testing into steel supports with at thickness of 1.0 mm.
- Values are based on no insulation under the sheeting.
- Serv. denotes serviceability
Wind Load Capacity: Limit State Design: 0.48mm BMT
| Span (mm) | Single Span | End Span | Internal Span | |||
| Serv. (kPa) | Strength (kPa) | Serv. (kPa) | Strength (kPa) | Serv. (kPa) | Strength (kPa) | |
| 450 | 7.00 | 12.00 | 7.50 | 10.95 | 8.00 | 12.00 |
| 600 | 4.71 | 12.00 | 5.35 | 8.95 | 5.89 | 10.90 |
| 900 | 1.72 | 8.25 | 2.38 | 6.10 | 2.94 | 6.80 |
| 1200 | 0.69 | 6.10 | 1.07 | 4.75 | 1.57 | 5.10 |
| 1500 | 0.40 | 4.85 | 0.39 | 3.95 | 0.80 | 4.20 |
Note:
- Values in the table above have been generated based on testing into steel supports with at thickness of 1.0 mm.
- Values are based on no insulation under the sheeting.
- Serv. denotes serviceability
Maximum Recommended Wall Cladding Span
| Wind Region | Base Metal Thickness (mm) | Terrain Category 2 | Terrain Category 3 | ||||
| Single (mm) | End (mm) | Internal (mm) | Single (mm) | End (mm) | Internal (mm) | ||
| A | 0.42 | 850 | 1050 | 1350 | 950 | 1200 | 1500 |
| 0.48 | 1050 | 1100 | 1550 | 1150 | 1250 | 1700 | |
| B | 0.42 | 800 | 1000 | 1350 | 900 | 1150 | 1500 |
| 0.48 | 1000 | 1050 | 1500 | 1100 | 1200 | 1650 | |
Importance Level 2
Maximum Roof Height H = 10m
External Pressure Coefficient:
Cpe = -0.65 for walling
Cpe = -0.9 for roofing
Internal Pressure Coefficient:
Cpi = 0.2
Local Pressure Factor:
KL = 2.0 (end & single span)
KL = 1.0 (internal span)
Table MF RS NC 001 - Mini-Flute
Note:
- Maximum walling spans comply with both strength and serviceability wind pressure requirements.
Pierce Fixing
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.
Notes:
All fasteners used externally should be fitted with an EPDM seal (washer). Do not use punches to form fastener holes.
Walling Fixing Details - Valley Fixed
6 fasteners per sheet
Pierce Fixing Table
| Fixing Supports | Interior - Valley Fixed (Walling Only) | Exterior - Valley Fixed (Walling Only) | Side Lap Fixing* |
| Steel 1.0 to 3.5mm | 10-16x20mm Ripple Teks self drilling screws | ABMG4-1/3 Buildex Multigrip Aluminium/Steel Rivets | ABMG4-1/3 Buildex Multigrip Aluminium/Steel Rivets |
| Timber Hardwood & Softwood | 10-16x30mm Ripple Teks (Type 17) self drilling screws |
Note:
- It may be necessary to fasten the side laps midspan to improve the aesthetic performance of miniflute.
See the Difference
Fielders®
- Fully formed ‘S’ curve of 6mm radius.
- Allowance for 1.5 flute lapping edge - cleaner joints, NO shadows.
The Others
-
More pointed curve, not fully formed.
Cappings
Figure MF NC Extruded Aluminium Channels 002
Extruded Aluminium Channels
Fielders® MF1 Mini-Flute Extruded Aluminium
Material: Aluminium
Finish: Raw
Fielders® MF2 Mini-Flute Extruded Aluminium
Material: Aluminium
Finish: Raw
Table MF EA NC 001
Mini-Flute Installation Procedure
For installation procedures see section “Typical Pierce Fix Installation Guide”. For general handling instructions refer to section “Maintenance and Care”.
Perforated Metal
Mini-Flute is also available in 0.48 BMT ZINCALUME® steel (conforming to AS 1397:2001 G550-AZ150) or in COLORBOND® steel (conforming to AS 1397:2001 G300- AZ150) with 2.38mm diameter holes at 6.74 pitch, providing 11% open area. Other materials and gauges with different hole sizes and pitches are also available.
Mini-Flute is also available in 0.42 BMT G550 and 0.60 BMT subject to minimum order quantity and appropriate lead time.
Maximum Sheet Length
See section “Thermal Expansion and Contraction of Steel Sheeting”.
Curving Mini-Flute
Mini-Flute can be curved by hart curving down to a radius of 500mm in either 0.42 BMT, 0.48 BMT or 0.60 BMT to form sheets to traditional heritage shapes and challenging architectural details.
For details regarding spring and smooth curving of Mini-Flute sheets, please see section “Curving of Steel Decks”.