How much rebar does suspended concrete need? I'm building a pizza oven platform. It has double brick walls supporting it on 3 sides in a U shape. I've built formwork so that the concrete will be in contact with the top of the brick walls and the formwork will break away from the bottom and sides. The outer edge of the walls is a metre wide, leaving about 60cm of unsupported concrete between the two side walls. The concrete will be 150mm thick.
I've got hold of 5 pieces of 8mm rebar 1m long. I was planning to place these 4 across and one in the middle front to back. But I've laid them out and it doesn't feel like enough. Do I need more? The pizza oven weighs about 600kg.
Also approx how many bags of all in ballast should I get for 0.15m³? I've got 6 so far, going to b&q tomorrow.
Cheers.
I've got hold of 5 pieces of 8mm rebar 1m long. I was planning to place these 4 across and one in the middle front to back. But I've laid them out and it doesn't feel like enough. Do I need more? The pizza oven weighs about 600kg.
Also approx how many bags of all in ballast should I get for 0.15m³? I've got 6 so far, going to b&q tomorrow.
Cheers.