I need to make an attachment for a possible support beam on a plastered facade.
It should go straight out from the wall (a support beam for a patio roof between two walls, one of which is plastered).
Behind the plaster sits a horizontal stud 220x45, which was mounted in advance for a possible future awning installation.
At first, I thought of scraping off the plaster and mounting a joist hanger for the support beam. However, I realized that it is hardly structurally sound, i.e., a joist hanger for a support beam that will hold up an entire patio roof (5x3m).
Therefore, I thought instead of fastening another stud (support beam for the support beam) on top of the plaster with through-bolts, on which my patio support beam can then rest.
The question is whether the plaster, barely 2cm of Serporock, will crack if I attach a stud, about 3m 145x45, on top of it? How strong is the plaster if you really tighten with through-bolts? I might have a thicker stud, like 195x45, to get a larger bearing surface for the plaster. I've never seen or heard of anyone doing that, and there might be other considerations in addition to strength as well.
Grateful for all types of feedback, ideas, and constructive criticism.
It should go straight out from the wall (a support beam for a patio roof between two walls, one of which is plastered).
Behind the plaster sits a horizontal stud 220x45, which was mounted in advance for a possible future awning installation.
At first, I thought of scraping off the plaster and mounting a joist hanger for the support beam. However, I realized that it is hardly structurally sound, i.e., a joist hanger for a support beam that will hold up an entire patio roof (5x3m).
Therefore, I thought instead of fastening another stud (support beam for the support beam) on top of the plaster with through-bolts, on which my patio support beam can then rest.
The question is whether the plaster, barely 2cm of Serporock, will crack if I attach a stud, about 3m 145x45, on top of it? How strong is the plaster if you really tighten with through-bolts? I might have a thicker stud, like 195x45, to get a larger bearing surface for the plaster. I've never seen or heard of anyone doing that, and there might be other considerations in addition to strength as well.
Grateful for all types of feedback, ideas, and constructive criticism.
Exactly. The insulation boards (placed behind the serporock) and the stud are flush with each other so the plaster lies directly against the stud. That is, about 2 cm of plaster directly against the stud. From the inside, it is vertical studs, drywall, cross braces, roofing felt, steel mesh, and plaster.
Click here to reply