Quote:
Originally Posted by plasmodium
To be honest I have concerns about leveling bolts - why go to all the effort with these monolithic blocks of concrete and columns that would support your house, if you then have the whole kit riding on three or four bolts....
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Valid concern, Lee. That's why the non skrink grout is critical. Get it from an engineering supplies shop.
The procedure is:
- set your bolts and let them go off (either concrete or chemsets)
- Fit your pier and level using double nuts or packers.
- If using a free running grout form up around the baseplate (leave about 25-50mm gap from baseplate to formwork)
- mix and pour in the grout from one side only until it comes out the opposite side (to force out air bubbles).
- let the grout set.
If you are using a plastic (not free running grout) grout, the procedure is the same, but you won't need to form up. You just keep pushing the ground under from the one side till it comes out the other, and then screed iff the edges.
BTW filling the centre of your pier pipe with sand or better yet concrete is good practice. Sand will act as a damper to any vibration and the extra mass with lower the natural frequency of the pier. Concrete adds mass but also adds a lot of stiffness.
Al.