How many props are needed?

[60talsvillan]

We are going to open up between two rooms and remove a load-bearing wall. The opening will be 3 meters long, and there will be a 3000×315×115 glulam beam on 90×90 posts there. How many props might be needed during the installation process, do you think?

How do I place the props while removing the load-bearing studs and installing the beam?

 

[sblixten]

It depends on how it looks.
You might be able to place a 45x225 1m from the wall with 1m between the supports, and you should be on the safe side.
That makes 4 pcs.