I have a small extension in the house and I think I can remove a beam in the "roof truss" to get a bit more ceiling height. Uploading a picture here to hopefully get some good comments from you.
The horizontal beam where the ceiling was previously attached is not attached to anything other than the angle beam that supports the outer roof.
If I'm not too unfortunate in my thinking, the horizontal beam doesn't carry any load at all and should be able to be removed?
No, absolutely not!
Without the subframe, the side walls will be pushed out by the weight of the roof and snow.
But they can be replaced with iron rods or cables, which are a bit sleeker.
Just for fun, look at, for example, old churches.
You see nice, intricate iron fittings in the upper part of the long sides.
That's where the tie rods, which hold the building together, are attached.
But the horizontal rule is not attached to anything other than the short vertical board. I understand it would bear load if it were attached to the house in some way, but it's not.
I give some other suggestions, but with roughly the same meaning, you probably can't remove it. I have drawn a little in your picture. The red line shows that the roof is extended and the roof truss lengthened. The green arrows show the direction of the forces.
Look closer at the picture. The lower beam does not continue into the wall on the left. In other words, it has no load-bearing function.
Thank you for the clarification! That's exactly how it is... except for one beam of all that is actually attached to the old exterior wall. (Fun with old houses).
I have a small extension in the house and I think I can remove a joist in the "roof truss" to get a bit more ceiling height.
I'm posting a picture here to hopefully get some good comments from you.
The horizontal joist where the ceiling was previously attached is not fastened to anything other than the angle brace supporting the outer roof.
If I'm not too unlucky in my thinking, the horizontal joist doesn't bear any load at all and should be removable?
The underarm holds the roof truss together so they don't slide apart and push out the walls...
But the horizontal rule is not attached to anything other than the short vertical board. I understand that it would bear load if it were attached to the house in some way but it is not.
Please explain, I'm probably wrong!
Are there beams resting on a ridge beam or is it a truss with upper chord and lower chord?