Check foundation post / air bubbles

[frihopper]

Just a thought:

If you take the budget version of this, could it work if you drilled down a really strong post shoe attached with anchor compound into the rock and place the post made of 3 pieces of 145*45 planks directly in the post shoe and skip the plinth?

 

[rävlyan]

It's possible, just keep in mind that it has to be positioned exactly at the right spot, as a slight misalignment in the hole in the rock can cause the shoes to break in the weld if you try to straighten it up. With a really strong shoe, a powerful machine is needed to drill; you can use one that's adjustable. It will then be a nut against the rock, and press up against the beam, and cast a little pad around it for support, so anchoring is not needed.

 

[frihopper]

It's possible, just make sure that it has to come exactly in the right place, it can easily become a slightly skewed hole in the rock and the shoes can break in the weld if you try to straighten it.
With a really strong shoe, you need a powerful machine for drilling, you can take one that can be adjusted, it will then be nut against the rock and press up against the floor, and cast a small cake around as support, it doesn't need to be anchored then.

Thanks! I'm thinking that it can be a little skewed maybe considering that the rule on the house the post is supposed to attach to is 4.8 cm and the width of the post is 3 pcs 145*45 rules, either 13.5 cm or 14.5 cm depending on which direction I set the post. But of course, you want the rule on the house in the middle of the post shoe.

I have a rotary hammer (Jula's Meec 1500 W) that I've drilled 12 mm holes with in rock without problems, this requires about 19-20 mm, we'll see if it suffices.

 

[rävlyan]

Thinking maybe a bit further, with the stolpsko, the pressure will come on one point (probably strong) but if the house turns a bit, it can crack the shoe (splits at the weld). So make some real plinths (concrete) and reinforcement according to the sketch and complement with some shoes.