I am going to cast a footing that is about 45cm wide, 17cm high, and approximately 7m long at an angle as shown in the picture. Inside, it will be filled with macadam, and then stones will be laid on top. It is for an outdoor kitchen.
I'm planning to cast the footing on Friday but would like some advice on reinforcement. I was thinking of placing 3 pieces of 12mm rebar in the middle of the footing's thickness at even intervals. I then plan to extend the reinforcement out of the footing, which will later be embedded in the wall. Since the wall will be about 80cm high, I thought of going up about 70cm from the footing. Planning to have these at 50cm intervals, aligned in the center of the footing.
Does this sound sufficient, or what do you think?
Is there anyone who can then give smart advice on the best way to form the wall? I was thinking of using formwork plywood on the visible outside and OSB on the inside. Then, pull stainless threaded rods through both boards to hold them together. Place studs at 45cm intervals vertically and then 3 horizontal 45x75mm or is there a simpler way?
I think you're exaggerating. It must be much simpler and cheaper to build the foundation walls with leca blocks and then plaster the outside. When you lay the leca, you place longitudinal reinforcement overlapping in the corner. Follow the leca manufacturer's instructions on that point. The spread-out plates that you will use as a sill usually don't need to be reinforced unless the ground is very unstable. They are subjected to a limited load. If you insist on adding reinforcement, you can take two 8 mm bars and place them at the top and near the outer edges and tie them together in the corner.
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