gully trap

Hello, We're laying new slabs in our garden, changed the drains and because of the levels and fall we have, the people I hired came up with that (image) so the gully there will stick almost entirely above slabs. The line in red shows where the slabs will come as height, all the water will be...

We've been noticing unpleasant odours coming from our outside rainwater drains. The toilets never back up when flushed and neither do the rainwater drains. We are never aware of these smells inside the house either. Just outside on the patio near the drains. I've been told that the "gully pot"...

Hi..I am looking at getting an extension and I'm hoping to get help with a question on my current kitchen drain. The kitchen drain exits the house into a gully trap with a rodding eye cover. The question is can I convert this drain into into a straight run without a trap as any trap will not be...