Hello.
We are planning to change the layout in part of our house to better suit us.
The idea is to remove the red walls. The blue dotted line will be the new walls.
The red dashed wall is something I'm quite sure is there because the rafters' lower chords are joined there.
Some information about the part of the house:
1 story with a basement underneath the entire section.
Basement built with lecablock.
A heavy steel beam is placed in the middle of the span to support the floor structure built of 2x9”.
The roof trusses are of the truss type and have a span of 9m. Roof slope 14 and 7 degrees, respectively.
The orange dotted line shows where the ridge is.
Lower chord in 2x5”. Upper chord in 2x6”.
Snow load zone 2.0.
Where the red-dashed wall stands and the lower chord is joined, there is a vertical post between the lower and upper chord on the truss.
The length of the red dashed wall is 3.9m.
I'm thinking we might need to place some sort of glulam/steel beam when we remove the red-dashed wall.
The beam needs to be placed on top of the lower chord as we don't want anything protruding into the room that will result.
That gives us only 270mm height on the beam if we place it directly over the wall.
Another option is to place a longer beam closer to the ridge and thus get a higher beam, it would then need to be 6.4m long.
If placed according to the pink dashed line, it would accommodate a 405mm high glulam.
How large a beam might be needed?
The new wall will help support the roof trusses as well.
I want to keep the cost of the beam down but not compromise on the building's safety.
Grateful for all responses.
//Janne
We are planning to change the layout in part of our house to better suit us.
The idea is to remove the red walls. The blue dotted line will be the new walls.
The red dashed wall is something I'm quite sure is there because the rafters' lower chords are joined there.
Some information about the part of the house:
1 story with a basement underneath the entire section.
Basement built with lecablock.
A heavy steel beam is placed in the middle of the span to support the floor structure built of 2x9”.
The roof trusses are of the truss type and have a span of 9m. Roof slope 14 and 7 degrees, respectively.
The orange dotted line shows where the ridge is.
Lower chord in 2x5”. Upper chord in 2x6”.
Snow load zone 2.0.
Where the red-dashed wall stands and the lower chord is joined, there is a vertical post between the lower and upper chord on the truss.
The length of the red dashed wall is 3.9m.
I'm thinking we might need to place some sort of glulam/steel beam when we remove the red-dashed wall.
The beam needs to be placed on top of the lower chord as we don't want anything protruding into the room that will result.
That gives us only 270mm height on the beam if we place it directly over the wall.
Another option is to place a longer beam closer to the ridge and thus get a higher beam, it would then need to be 6.4m long.
If placed according to the pink dashed line, it would accommodate a 405mm high glulam.
How large a beam might be needed?
The new wall will help support the roof trusses as well.
I want to keep the cost of the beam down but not compromise on the building's safety.
Grateful for all responses.
//Janne
