| Site | Dimensions in metres | Internal area (m²) | Roof surface area(conical) (m²) | Roof surface area (rectilinear) (m²) | Max rafter length in metres |
|---|---|---|---|---|---|
| Dun Cuier | 7.1 (diameter) | 44.2 | 62.4 | – | 5.3 |
| Bostadh 1 | 6 (dia.) + 4.5 (dia.) | 32.8 | 62.5 | 70 | 4.2 |
| Bostadh 3 | 6 (dia.) + 2.25 (dia.) | 44.2 | 62.5 | 70 | 4.2 |
| Cnip rectilinear | 7 x 2.2 | 15.4 | – | 22.3 | 1.6 |
| Beirgh | 6.5 | c.48.2 | 46.9 | 4.6 | |
| Average | 37 | 56.6 | 4 |
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| File last updated: Tues Feb 28 2006