Not really no.
If in loft space gallows brackets are the general way to go. If first floor steel support would be advised. Generally under the remit of building control.
Get a qualified builder in
no. Chimney breast should be supported by galow brackets or steel beam and metal plate
Normally you will use Gallow brackets designed. Average size of brackets will be 375 x 490 x 10mm and 22mm holes. U will need to bolt to the wall.then use a lintel to suport the chimney using concrete 65 x 102 by the witdh of the chimney or steel 50mm or 10mm. Hope this helped.
If the ground floor part of the chimney breast has been removed, I wouldn't trust The wooden joists! in my opinion you need Gallo brackets and maybe a structural engineer.
Hope this helps
Mark
Wooden joist will not be enough to support a weight of the chimney, steal beam needs to installed
No they are not a using a structural engineer would be advisable although a competent builder would know if a pre stressed Lintol or a RSJ could be used
I've seen walls built on timber joists in old buildings so yes is the answer to your question but NO your not allowed to use timber to support anything load bearing what you would need is a steel RSJ you also need to get a structural engineer in before removing any load bearing wall.
No, any structural engineer will tell you it has to be steel
Davie