| If the roof ridge or a purlin crosses the opening, you'll have to relocate the opening and use an angled or splayed light shaft between the roof and the ceiling. |
| At the corner where an eave and gable meet, measure eight feet along the eave purlin and mark. |
| Further, the rotational restraint plays an important role on the buckling behaviour of the attached purlin. |
| Therefore, it was important to carry out multidirectional vibration monitoring of this ridge purlin. |
| Two loading directions were examined by adjusting the purlin fixing direction. |
| Modern attic rafters or traditional rafter and purlin construction will get you out of the forest of crossed members typical in a post 1960s house. |
