Hi! I'm going to mount the swing arm in the picture on a 250mm Siporex wall. The arm is over 2m long, heavy in itself, and at the end, there will be a compressed air reel that will be pulled. So, the load on the mounting will be very high. It will be attached to a Siporex wall (exterior wall).
To solve this, my idea is to mount the bracket for the arm on an 18mm plywood board that is 50mm larger than the bracket in all directions. Then, use screws, washers, and lock nuts straight through the exterior wall. On the outside of the exterior wall, there is a heavy metal plate, about 8mm or so, to distribute the pressure properly.
Yes, that's probably the only way. Consider whether your wall is homogeneous or if it has frigolit in the middle, perhaps it affects how tightly you apply the bandage.
