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Its not really about UK standards. All western standards would include a large safety margin. Exactly how much i dont know. Here in Indonesia there are no standards or codes we need to work to for permits. This is purely for my peace of mind. Most builders here never even use 16mm rebar...

I had thought about that as wouldn't be difficult, but that column is choca with rebar. 2 beams connect to it at 90 degrees. Each beam has 4 x 16mm top rebars with hooks, then 3 extra 16mm bars about 5cm below them for added shear resistance. Not going to be able to drill 18-20mm holes without...

Thanks but what i am saying is there isn't 500mm, thats the problem. I read overlap should actually be 40 to 50 x diameter depending on which source I was reading. So minimum 64cm. If you look at the photo all the rebar in the middle are short, one is only 20cm and the others range up to 45cm...

Hi guys. I'm new here just looking for some help please. Hopefully asking in the right place. I'm english but building in Indonesia. Our builders have messed up a bit on house build and left the rebar short for splicing to new column on one column. We have 12 columns and the rest are OK. 16mm...