I am going to build foundation walls out of leca on which the floor joists will rest. However, according to the drawing, I need to have manholes in all interior walls. Since the floor joists are on cc 400, the opening needs to include at least one joist. What should I use to support the opening? I've been suggested a steel beam, but what dimension is needed? Is a HEA 100 sufficient, or does it need to be stronger?
The joists are made of construction timber measuring 245mm.
The joists are made of construction timber measuring 245mm.
How large is the opening, please upload a drawing.
HEA 100 is probably a significant over-dimensioning. Some form of VKR tube is likely more suitable. One needs to know the width of the opening and the length of the beams to be able to calculate it.
With the limited opening, you can use any VKR pipe. It's mostly a practical matter of what is easiest to install.