I am building a 22m long retaining wall from 9" hollow block, which will be reinforced with steel hooked into a reinforced foundation. My question is, at what centres do I need to insert 12mm re-bar? I had estimated about 1 every metre - is this sufficient?
second question - Wall will be 440 thick for first course, 220mm thick for remainder on a 600 wide foundation. Hiegth will be 1.6m Do I need to fill the hollow blocks compeltely, or will filling those cells in which the re-bar sits suffice?
Any advice welcome
second question - Wall will be 440 thick for first course, 220mm thick for remainder on a 600 wide foundation. Hiegth will be 1.6m Do I need to fill the hollow blocks compeltely, or will filling those cells in which the re-bar sits suffice?
Any advice welcome