I am building a new house with an accompanying garage. In the previous garage, I had the storage system
Duratrax which I was childishly fond of. So it will be installed in the new garage as well. The system can withstand very high weights (300 kg per linear meter of rail), but as we know, no chain is stronger than its weakest link. So I want to ensure that I get a solid mounting of the rails on the wall.
One of the garage walls where I will have rails is a standard stud wall with 13 mm plasterboard (and 11 mm OSB under the plasterboard). There, I simply need to hit as many studs as possible, and otherwise use a good anchor that grips well in the plasterboard+OSB combo. That will be manageable.
My concern is the concrete wall. It is built with 250 mm
Jackon thermoblock, which means 150 mm of concrete in the middle with 50 mm of polystyrene on each side. On top of that, 13 mm plasterboard and 11 mm OSB. Here are some alternative anchoring solutions.
- Just anchor in the plasterboard+OSB combo with a suitable anchor (plug or plasterboard expander or similar). It likely won't be extremely strong. On the other hand, it avoids potential issues with hitting rebar in the concrete wall (yep, there is quite a bit of rebar in it...).
- Use really long expansion bolts that are firmly anchored inside the concrete core of the wall (the center of the concrete core is about 15 cm from the surface of the inner wall). It becomes strong but also experiences significant torque given the long lever arm from the actual anchor point. There is also a risk of hitting rebar.
- Like point 2 above but with a combination of threaded rod and chemical anchor/anchor adhesive. The advantage could be that if I hit rebar, I can just let the hole end there and shorten the threaded rod. Plus, the chemical anchor/anchor adhesive grips not just in the concrete core, but also in the rest of the hole (polystyrene, plasterboard, and OSB).
What would you choose and why? Any other anchoring solutions that might work?
Thanks.