What fire rating does handrail have?

[pjärlumjär]

Hello!
I live in a condominium attic apartment where the interior ceiling has been removed and the roof has been raised to the ridge. The building is from 1959 and the interior ceiling had a gypsum board, raw wood and thin insulation. The attic is traditional, with raw wood rafters, etc., against the outer roof. The change was made 15 years ago.

What fire rating should the tie beams have? They are not load-bearing.

I would appreciate an answer if anyone possibly knows.
Sincerely, Per Olof Sjölund

 

[klaskarlsson]

Hello!
I live in a brf attic apartment where the inner ceiling has been removed and the roof lifted to the ridge. The building is from 1959 and the inner ceiling had a gypsum board, raw wood and thin insulation. The attic space is traditional, raw wood trusses, etc., against the outer roof. The change was made 15 years ago.

What fire rating should the collar ties have? They are not load-bearing.

Grateful for an answer if anyone possibly knows.
Kind regards, Per Olof Sjölund

REI60 is the requirement for all construction if it separates apartments. Normally, you achieve this by cladding the construction, including the flooring.

I don't know if it is approved at all to have visible flooring, logically such a construction would weaken quickly in a fire, even though wood itself can resist fire without completely burning up for a while. Collar ties are always somewhat load-bearing since they are part of the truss construction?

However, I'm not an expert, there might be ways around this. For instance, with some special paint, etc.?

https://www.traguiden.se/konstrukti.../stomme/bjalklag/lagenhetsskiljande-bjalklag/
https://www.fsbsverige.se/dokument/6 Konstruktionslösningar.pdf

 

[pjärlumjär]

REI60 is the requirement for all construction if it is apartment-separating.
Normally, this is achieved by cladding the construction, including the floor structure.

I don't know if it's approved at all with visible joists, reasonably such a construction would weaken quickly in a fire, even though wood itself can withstand fire without totally burning up for a while.
Tie beams are always in some sense load-bearing since they are part of the truss construction, right?

I am not an expert, though; maybe there are ways around this. For example, with some special paint, etc.?

[link]
[link] Konstruktionslösningar.pdf

Thank you for your response. As I understand it, tie beams are truss-stabilizing but not load-bearing. I have been informed of two classifications, one being the original, the 1959 standard, i.e., 30 minutes of fire protection but also 60 minutes of fire protection. So, I will see what information comes up. I should not protect more than necessary; the paints are expensive and maybe better to gypsum in.