can you please give me any advice on loadings for steel cavity lintels,i need to bridge a 3.2 meter gap,the only loading which i will be building on it, is 5 coarses of bricks,2 of celcon blocks.are there any charts or tables that can help me.
please could you give me advice on 110mm drainage pipes which are running through the footings i have dug for our extension.what are the regs to building over them.
