Switch above 180cm wide patio door

[JonkaRud]

Hello,

I want to replace a single door with a double door and therefore need to create a larger opening in a load-bearing exterior wall. It's a 1.5-story villa from 2001 where the wall consists of a horizontal 45x195 with vertical 45x195 studs at 600mm centers, the top plate consists of one vertical 45x195 and one horizontal 45x195. Above the existing door opening, they have placed a double 45x195, and I wonder if you could continue in the same way or alternatively screw and glue together three 45x195s that rest on a couple of vertical 45x195s with 1800mm in between?

Does anyone know what is an appropriate construction for this?
Perhaps I should add that the house measures 12x8 meters with a dormer and concrete tiles, and that a roof truss will be positioned over the new beam.

 

[justusandersson]

In snow zone 2, the point load from a roof truss will be approximately 15 kN. If the truss is placed in the middle of the beam (most unfavorable position), 2 glued screws 45x195 are sufficient with a good margin.

 

[JonkaRud]

In snow zone 2, the point load from a truss will be about 15 kN. If the truss is placed in the middle of the beam (the most disadvantageous location), 2 screw-laminated 45x195 will be more than sufficient.

Thank you very much for the response. Yes, unfortunately, a truss almost ends up in the middle. But then I'll go with two screw-laminated ones; I initially thought we might need something even stronger (like three screw-laminated ones or laminated wood), but it's good that two are more than enough.