I need to run approx 4m straight length of 40mm kitchen waste. This will be connected to the kitchen sink and a dishwasher. I will put rodding points at either end of the 4m pipe.
Do I also need to vent the pipe? I thought I read that if the pipe was over 3m a vent is needed, but I can't find that reference now.
Do I also need to vent the pipe? I thought I read that if the pipe was over 3m a vent is needed, but I can't find that reference now.