This beam is about 6 meters long and is located in the ceiling on the first floor of a two-story house. The first picture shows before the glulam post was installed. Picture two shows after the post is installed; some material had to be removed to fit the post in, as seen at the bottom right where the post has been mounted. On the beam, you can see that they have built up the beam so that the outer boards splice at the same place. If you look closely, you can see that the splice of the outer boards comes about 2 centimeters to the right of the pillar. To me, it seems unfortunate that the pillar does not support the splice of the outer boards, and that the outer boards should not have been spliced at precisely the same spot. I assume the pillar helps somewhat since it's very close. Can this beam be trusted?
I'm not a designer, but when I look at that, I wonder two things:
1. Why was the beam carved instead of trimming the glue-laminated column?
2. Why was the beam built the way it was with two joints at the same place instead of being staggered? Is the beam really constructed correctly? Why isn't it glue-laminated?
It's probably a very good idea to have a designer look at that as soon as possible before it's built in.
My spontaneous feeling is that the effective dimension of the beam has been reduced to one-sixth at the joint due to the carving, and that the joint is right at the column. I wouldn't trust it.
I'm not an engineer but when I look at that I wonder two things
1. Why was the beam notched instead of cutting the glue-laminated column?
2. Why was the beam built with two joints in the same place instead of being staggered? Is the beam really correctly built? Why isn't it laminated wood?
It's probably a very good idea to have an engineer look at that as soon as possible before it's enclosed.
My immediate feeling is that the effective dimension of the beam has been reduced to one-sixth at the joint due to the notching, and the joint is right at the column. I wouldn't trust it.
tommib said:
I'm not an engineer but when I look at that I wonder two things
1. Why was the beam notched instead of cutting the glue-laminated column?
2. Why was the beam built with two joints in the same place instead of being staggered? Is the beam really correctly built? Why isn't it laminated wood?
It's probably a very good idea to have an engineer look at that as soon as possible before it's enclosed.
My immediate feeling is that the effective dimension of the beam has been reduced to one-sixth at the joint due to the notching, and the joint is right at the column. I wouldn't trust it.
It’s hard to see in the picture, but the middle board in the beam goes down into the column, and material has been removed from the outer boards. It looks roughly like the image below. Apologies for the image quality.
To the right of the column, isn't it basically just the middle rule of the beam that actually has support on the column? It is also almost halfway cut out, can't be good
Yes, that's exactly how it is, because the seam came just before the column. But the middle board goes down into the column, it is at full width/height.
At the end of the beam, there is a slight bending moment, so the beam does not need to be at full height.
With the notch in the post, the beam cannot twist and lay on its side.
It looks a bit sloppy. Logically, the column should have been either as wide as the "beam" or considerably wider. Otherwise, it's hard to comment without more info. Is the beam glue-screwed? What is the height dimension? How long is it? Does it only have a middle support? Is it a factory-made glulam column?
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