I am going to take down a load-bearing lightweight concrete wall, 150mm thick and 2500mm long, with a ceiling height of 2400mm. According to the designer's plan, they wanted to use an HEB140 beam with 200mm embedded in the wall on each side.
Additionally, the beam should be fireproofed with, for example, Gyproc fire 15.
However, I can't seem to make it fit; a 140mm beam with Gyproc fire 15 would have the gypsum sticking out beyond the embedded beam by 10mm on each side, which isn't very aesthetically pleasing in the middle of a wall.
I'm considering whether a glulam beam might be better, even though it would hang lower, 300mm, there would still be 2100mm in height below the beam. Now the designer wants more payment to calculate for glulam versus the HEB beam.
What would you do before I decide to ask him to draft for glulam?
Maybe you also know approximately what size glulam beam I need?
Additionally, the beam should be fireproofed with, for example, Gyproc fire 15.
However, I can't seem to make it fit; a 140mm beam with Gyproc fire 15 would have the gypsum sticking out beyond the embedded beam by 10mm on each side, which isn't very aesthetically pleasing in the middle of a wall.
I'm considering whether a glulam beam might be better, even though it would hang lower, 300mm, there would still be 2100mm in height below the beam. Now the designer wants more payment to calculate for glulam versus the HEB beam.
What would you do before I decide to ask him to draft for glulam?
Maybe you also know approximately what size glulam beam I need?
A HEB140 has nearly identical bending stiffness as a glulam beam 115x315 mm. The next standard width for glulam is 140 mm if that width works better when it is wood instead of steel (not sure if it needs to be covered with the same material). 140x270 mm, which is the interesting alternative, will be less rigid than the other two options but stiffer than the nearest smaller steel beam (HEB or HEA) so you need to know how much margin there is with HEB140 to determine if it's okay.