Hi. Can anyone tell me if there is a recommended size of concrete lintels, for bridging over where my waste drainage passes through the courses below ground level.
I will be adding 150 to each end, and the opening will only be 110mm plus the 50mm all round for movement. ( plus maybe a little to keep to bond without cutting too much ).
It is 100/100/100 cavity wall, block inner, brick outer leaf.
Thanks
I will be adding 150 to each end, and the opening will only be 110mm plus the 50mm all round for movement. ( plus maybe a little to keep to bond without cutting too much ).
It is 100/100/100 cavity wall, block inner, brick outer leaf.
Thanks