I am currently refurbishing a ground floor and first floor flat and have the oppoortunity/misfortune of having to create a new soil stack. The current set up means I have to remove the existing soil stack, but I can use the existing drain, but the pipes are only about a foot below ground level.
1. Is the soil manifold allowed to have an immediate 90 degree bend underground or could this cause me problems. For example, I'd quite like to have a soil manifold for the ground floor doing a 90 degree bend before going through the wall below ground then hitting a branch so that I can attach a 110mm pipe to vent away outside?
2. With the soil vent outside, it will hit the tiles - Do people use a coupld of 135 bends to vent above the tiles?
1. Is the soil manifold allowed to have an immediate 90 degree bend underground or could this cause me problems. For example, I'd quite like to have a soil manifold for the ground floor doing a 90 degree bend before going through the wall below ground then hitting a branch so that I can attach a 110mm pipe to vent away outside?
2. With the soil vent outside, it will hit the tiles - Do people use a coupld of 135 bends to vent above the tiles?