Hi folks
Below is some handy work of mine that I need to revisit. I'm in the process of turning a coal store into a downstairs toilet but have hit a snag. The smaller (32mm) black waste pipe in the picture below is from 1 (soon to be 2) basins. The room on the other side of the wall (photo 2) is below ground level, I'm having to use a Macerator for the toilet because of this. The issue I have is that the sink waste pipe to the right is as close to that Victorian DPC as I can get it but is still too high in the room below to be of practical use to drain a sink. The macerator I'm getting has an inlet for a sink too but I'd like to not use this if possible as I don't wont the macerator to have to run every time either of the sinks is used (The pipe drains an upstairs sink too).
I'm wanting to know if it's OK to drill a downward sloping hole for a pipe going through the DPC instead? To drain the water with gravity it'll mean it'll obviously be sloping downwards so any moisture should be directed to the outside stone wall rather than then inner brick layer. Is this an OK thing to do? Would it fail building regs approval if I did this?
Below is some handy work of mine that I need to revisit. I'm in the process of turning a coal store into a downstairs toilet but have hit a snag. The smaller (32mm) black waste pipe in the picture below is from 1 (soon to be 2) basins. The room on the other side of the wall (photo 2) is below ground level, I'm having to use a Macerator for the toilet because of this. The issue I have is that the sink waste pipe to the right is as close to that Victorian DPC as I can get it but is still too high in the room below to be of practical use to drain a sink. The macerator I'm getting has an inlet for a sink too but I'd like to not use this if possible as I don't wont the macerator to have to run every time either of the sinks is used (The pipe drains an upstairs sink too).
I'm wanting to know if it's OK to drill a downward sloping hole for a pipe going through the DPC instead? To drain the water with gravity it'll mean it'll obviously be sloping downwards so any moisture should be directed to the outside stone wall rather than then inner brick layer. Is this an OK thing to do? Would it fail building regs approval if I did this?