Remove post. Glulam? Extend or replace?

[mikethebike1]

Hello,

I have a patio where I want to remove the middle one of the three posts that are there.

• The distance between the outermost posts is 520 cm.
• The depth from the house wall to the posts is 200 cm.
• There is a roof above, four rafters resting on the house wall, cc 120.
• The current glulam resting on the post is 90x270.
• The roof against the outer wall (left picture 1) rests on that wall and is not affected by the change.

I have done some research and generally, a glulam of 115x405 (maybe more?) would be needed. If I understand everything correctly. Feel free to correct me.

But since it's a whole rafter that rests on the house, do I need such a strong glulam?

Practically speaking. Do I need to remove the current one and replace it with a new one? Can I extend the current one? At first, I thought I could attach another 90x270 outside, but then I have the problem that it doesn't rest on any of the outer posts. If that is a problem?

Other ideas or thoughts are gratefully received!

 

[justusandersson]

You need to provide significantly more information for one to understand the construction. Floor and section drawings, for example. Where was the photo of the roof trusses taken? I don't think it's realistic to keep the current beam. For a new and old beam to work together, they need to be glued together, which is not easy in this situation. A beam with dimensions 115x405 (without checking if it's the correct dimension) can be replaced by 215x315.

 

[mikethebike1]

You need to provide significantly more information to understand the construction. Floor plans and sectional drawings, for example. Where was the photo of the roof trusses taken? I don't think it's realistic to keep the current beam. For a new and old beam to work together, they need to be glued, which is not easy in this situation. A beam with dimensions 115x405 (without checking if that's the right dimension) can be replaced with 215x315.

I don't have a floor plan that includes the roof trusses. The picture of the roof trusses is taken from the house wall, where the overhang out to the posts begins.