Sigma Purlin Sleeves
Sleeve Assembly and Cleat Details
| • Sleeves are required to provide structural continuity of the purlin section across the supporting rafter. • All sleeves are of similar length and longitudinal drillings consistent. • Sleeve thickness is dependent on purlin thickness. |
Sigma Purlin Systems |
| Single Span Butt System | |
| Double Span Butt System | |
| Heavy End Bay System | |
| Sleeve Assembly and Cleat Details |
| Purlin Thickness | Sleeve Thickness |
| Up to 1.8mm | 2.0mm |
| Over 1.8mm - 2.3mm | 2.5mm |
| Over 2.3mm - 3.0mm | 3.0mm |
| Albion Tip: The most cost effective purlin system, in terms of material content and number of components to erect, is the double span butt system. |
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Purlin Cleat DetailsWelded Type |
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Bolted Type |
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Standard Sleeve Dimensions
| Purlin Series | A | B | C | Thickness | Hole dia |
| All 200 | 154 | 35 | 209 | 6 | 14 |
| 22512-22516 | 179 | 32 | 234 | 6 | 14 |
| 22518-22525 | 179 | 35 | 234 | 8 | 14 |
| 24015-24018 | 190 | 37 | 247 | 8 | 14 |
| 24020-24028 | 190 | 37 | 247 | 10 | 14 |
| All 265 | 205 | 42 | 272 | 10 | 18 |
| All 300 | 240 | 42 | 307 | 10 | 18 |
Material: Mild Steel
Finish: Natural
Note: Where Albion standard cleats are not provided, take care to ensure that sufficient clearance is provided from the underside of the purlin to the top of the rafter for the installation of the sleeve.
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