Received the structural calculation from the engineer, and he had incorrectly used an IPE160 even though I said I wanted to calculate with a glulam beam.
IPE 160 corresponds more accurately to 90x270. I don't think you should buy it. We have previously concluded that it is problematic to have a steel beam under the current circumstances.
I have pointed out that they should recalculate with a glulam.
I also thought it sounded very weak with an IPE160. I'm worried that they don't have enough competence to do the calculations or that they have missed entering some factors or values in the calculation program.
Ahh ok, I'll post the final one when it's ready. Need to go out and measure the distance between the roof trusses. It's apparently important for the point load on the middle post.
I'll deliver the distance to the company on Monday.
It may not matter to you, but the roof beam doesn’t have to be directly above the pillar; it can be placed a maximum of the beam's height away from the edge of the pillar without affecting the shear force. Thought I'd mention it in case you made adjustments specifically to get the roof beam centered on the pillar.
Ahhh, how strange. For now a roof beam was placed 20-30 cm away from the center pillar. The architect said it was better to have it directly over the center pillar.
Now I've sketched the trusses. Had to go out and measure to get it exactly right. Not fun in a snowstorm but...should have done it earlier..
The designer is not wrong in that; one tries to achieve a "natural" flow of forces. But as mentioned, one can reduce the shear force of a load near the support (within 45 degrees from the edge of the support). I think you can adjust the section so that it ends up centered between the walls. Small eccentricities tend to look like something didn't turn out quite right.
The right side will be hidden by a fridge and the left side by a curtain/drape.
Additionally, the measurements to the walls are not completely accurate. The room according to the drawing is 7250 mm but when I measure, I get it to be slightly more.
From the outside, I can easily find the truss that is in the middle. I measure 3000 mm in both directions. It’s not entirely easy to extend that line into the house and measure distances to each respective wall.
On the right side, I got it to 860 mm and on the left side 600 mm. The beam is 6000 mm.
860 + 6000 + 600 = 7460 mm
So it does not match the room's measurement on the drawing.
The most stylish option would have been to have an opening that goes from wall to wall minus space for the fridge on the right side. This would mean a beam of 6.5m.
The standard size (max) for a sliding door is 6m. The standard size for a glulam beam is 6m. The standard size for curtain/drape is 6m, etc...
Therefore, I choose to go down to 6m.
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