This spring, when the water level is at its lowest, I'm planning to cast heavy-duty concrete foundations at the waterline (Baltic Sea). I'm considering making the forms conical towards the water, but how many rebar should I use? Is it better to have more and thicker ones?
The foundations will have a base of 40 cm at the bottom and around 25 cm at the top. The height will be approximately 40 cm.
On that surface, I can easily fit 5-6 rebar with "adequate spacing," or should I try to use 10? How should I approach this?
Regards
The foundations will have a base of 40 cm at the bottom and around 25 cm at the top. The height will be approximately 40 cm.
On that surface, I can easily fit 5-6 rebar with "adequate spacing," or should I try to use 10? How should I approach this?
Regards
Well, order the timber when the construction drawing is in its perfection 
Yes, if the ice is a factor of 1 or 0, then it might be so, but drilling 3 extra holes or increasing the reinforcement from 10 to 16 mm doesn't seem that expensive.
I think there should be some measures that aren't too costly, which means I can better withstand the ice. I understand that a pier can't withstand severe ice breakup, but as I said, there should be a middle ground.
Yes, if the ice is a factor of 1 or 0, then it might be so, but drilling 3 extra holes or increasing the reinforcement from 10 to 16 mm doesn't seem that expensive.
I think there should be some measures that aren't too costly, which means I can better withstand the ice. I understand that a pier can't withstand severe ice breakup, but as I said, there should be a middle ground.
4 X 12 or 3 X 16 beams doesn't matter. As many as you think are good. Drill into the rock at an angle between 30 - 45 degrees out from the center pile, at least 15 cm down, then bend them up to plumb. Tie with a rebar so they stay in plumb position during casting. Then they can't be pulled out of the rock and will withstand ice pressure well. Unless the rock gives way, probably not.
Thank you!
I'm thinking of going with 12mm or maybe 14mm then I can manage with my small machine.
Should I use slurr or ankarmassa?
Either way, they will hold tightly, so I don't think they can move during casting. Is tying necessary then?
A cross connection might be good against the ice?
I'm thinking of going with 12mm or maybe 14mm then I can manage with my small machine.
Should I use slurr or ankarmassa?
Either way, they will hold tightly, so I don't think they can move during casting. Is tying necessary then?
A cross connection might be good against the ice?
No anchoring of the irons is needed as long as they are graded out, try pulling out an iron straight up that is in the rock with grading. You can't do it. When the concrete arrives, the irons are fixed so that all stress is upwards. Some transverse iron is not wrong, as it keeps mutual distance. With that height, the irons will sit firmly in the concrete and not slide out.
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