Hello!

I am planning to attach 6 pieces of 45x220 mm beams to existing 200 mm piers (from 1980) on my summer house. The beams will be attached to a total of 18 piers, crosswise under the house. Now I'm wondering how to do the fastening. I was entirely set on using threaded rods straight through the pier but am hesitating a bit because I think it might loosen part of the pier when I drill through it, when the drill comes out on the other side. I'm considering using expansion bolts instead through half of the pier. What would you have done?

The threaded rods or expansion bolts will support the beam, which in turn on 6 of the piers will brace the house, so they need to bear some load.

Do you have any other tips on what to consider when drilling into a pier so as not to damage anything? I will be using a hammer drill.
 
hsd
What should the studs support
 
hsd hsd said:
What are the studs supposed to support
As stated in the introduction. They are intended to brace the house. The floor joist has slipped off some of the pillars (they were poorly made from the start), and the plan is to attach the studs to the pillars to support the outermost floor joist of the house. There's nothing else wrong with the pillars; they stand straight but were cast in the wrong position from the beginning.
 
Drill approximately 100mm into the foundation (to the center). Insert threaded rod with chemical anchor, more stable and better than expansion bolt.
 
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minisorkis
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hsd
I am wondering if you can use nail plugs, there are long ones, then you just need to drill right through the stud and into the plinth, push in anchor compound, and drive in the nail plug.
If the house is just being reinforced, it should hold.
 
V vectrex said:
Drill approximately 100mm into the foundation (to the center). Use threaded rod with chemical anchor, more stable and better than expansion bolts.
Thanks! Let's say I use a 12 mm threaded rod, do I then drill a 14 mm hole, inject anchor compound, and insert the threaded rod and let it set?
 
M minisp4m said:
Thanks! Let's say I take a 12 mm threaded rod, do I then drill a 14 mm hole, inject anchor adhesive, insert the threaded rod, and let it cure?
Drill the hole, up to 14mm, it's usually 2mm larger, blow out the hole (DO NOT use a vacuum cleaner), brush out the hole, blow out the hole, brush out the hole, blow out the hole, fill with about 2/3 anchor adhesive, insert the threaded rod in a circular motion.

That usually holds true for most anchor adhesives, but there may be deviations, so I would check the specifications for the brand you choose. Another point is to drill and prepare ALL the holes and then do the assembly on all within a few minutes, the adhesive cures quickly, and new mixing nozzles are costly... Good luck!
 
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