[OT] Design of staircase to upper floor.

[IceBall]

Hello!
I'm renovating my house and building a new staircase. A company has made 14 steps in oak. To support the steps, I plan to have two glulam beams placed quite close to each other (the steps will be free-hanging on the sides).
How do you determine the angle of the beams to figure out how to cut for the steps?
The steps are 22 cm deep and the height is 2.75m from floor to floor on the upper level. I have 14 steps so the first oak step starts a bit below the upper floor.
Can anyone give me tips on how to calculate the cut so the beam angle is correct?

Best regards, Nisse

 

[Immobil]

Anyone who can give me tips on how to calculate how it should be cut to get the right angle on the beams??

I assume it's a straight staircase you're making. Based on your description and the measurements you have provided, I have come to the following conclusion:
Step height = 183.3 mm
Step depth = 195 mm (I have accounted for an overhang / nosing: 25 mm).
The staircase then projects 2,742 mm from the floor opening.
The glulam beams should be ~ 4,000 mm long.
And the angle, well, it is: 43.2º.

 

[IceBall]

Thank you! That was exactly what I needed to know... so now I'm going to start cutting!

 

[Immobil]

... so now I'm going to start sawing!

8) Good luck!!