The structural properties of the various material options can be summarised as follows:
Recommended Maximum Purlin Spacing Metre - IBR
| | | | | |
|---|
| Thickness | 0.47mm | 0.40mm | 0.50mm | 0.58mm | 0.80mm |
| Steelgrade | G550 | ISQ300 | ISQ550 | ISQ300 | ISQ230 |
| Roof - Single Span | 1.65 | 1.25 | 1.65 | 1.75 | 2.25 |
| Roof - Double Span | 1.95 | 1.40 | 1.95 | 2.10 | 2.50 |
| Cantilever - Roof | 0.40 | 0.420 | 0.40 | 0.45 | 0.55 |
| Wall Single Span | 2.35 | 1.70 | 2.35 | 2.60 | 2.95 |
| Wall Double Span | 2.75 | 1.90 | 2.75 | 2.95 | 3.60 |
| Cantilever | 0.90 | 0.60 | 0.90 | 1.00 | 1.15 |
| Weight per metre | 3.194kg | 2.897kg | 3.615kg | 4.197kg | 5.798kg |
| Weight per square metre | 4.655kg | 4.223kg | 5.269kg | 6.118kg | 8.451kg |
| Coating type | Zincalume | Galvanised | Galvanised | Galvanised | Galvanised |
| Coating weight | AZ150 | Z160 | Z275 | Z275 | Z275 |
| Paint system | Colorbond | N/A | Chromadek | Chromadek | Chromadek |
| Thickness Tolerance | ±0.03 | ±0.02 | ±0.02 | ±0.03 | ±0.04 |
Approximate Life Span Years
| | | | | |
|---|
| Rural area | >30 | >10 | >20 | >20 | >20 |
| Industrial/Marine | >20 | 5-10 | 10-20 | 10-20 | 10-20 |
| Severe Marine | 10-20 | 1-5 | 3-10 | 3-10 | 3-10 |
Specification
| Thickness and Material Quality | Coating | Available Paint system |
|---|
| 0.40mm - ISQ300 | Z160 Galvanised | |
| 0.50mm - ISQ550 | Z275 Galvanised | |
| 0.58mm - ISQ300 | Z275 Galvanised | |
| 0.80mm - ISQ230 | Z275 Galvanised | |
| 0.50mm - ISQ550 | Z275 Galvanised | Chromadek |
| 0.58mm - ISQ300 | Z275 Galvanised | Chromadek |
| 0.80mm - ISQ230 | Z275 Galvanised | Chromadek |
| 0.47mm - G550 | AZ150 Zincalume | |
| 0.53mm - G550 | AZ150 Zincalume | Colorbond |
