mangocrazy
Italian V-twin nutjob
- Messages
- 1,164
- Location
- Sheffield, UK
I'm briefly back in the moneypit in France and it's becoming more apparent daily that I will need to shore up a couple of wooden joists that were put in when the roof was renewed about 10 years ago. All the other joists are either single span or joined, but supported by pillars at the join. The two problematic ones were joined along their length and only supported by a cantilevered beam, which has subsequently succumbed to gravity and drooped a fair bit.
The joist sections we used were 150 x 50 at 600mm centres. They are supporting 'sous tuile plaques', basically sheets of fibro-cement that take the place of the 'tuiles canales' used in southern France.
My cunning plan is to jack the roof up at key points (gently and over a period of time) to bring the dodgy roof sections back into line with the rest and then underpin the joists with RSJs supported firmly at each end. My question really is what section of joist should I be looking at? The span is 4.5m max (actually slightly less) including where it will be bedded into the wall. I'll add some photos tomorrow if people have difficulty visualising it.
The joist sections we used were 150 x 50 at 600mm centres. They are supporting 'sous tuile plaques', basically sheets of fibro-cement that take the place of the 'tuiles canales' used in southern France.
My cunning plan is to jack the roof up at key points (gently and over a period of time) to bring the dodgy roof sections back into line with the rest and then underpin the joists with RSJs supported firmly at each end. My question really is what section of joist should I be looking at? The span is 4.5m max (actually slightly less) including where it will be bedded into the wall. I'll add some photos tomorrow if people have difficulty visualising it.