Unfortunately, I didn’t pay close enough attention to the execution plan. Now a wastewater pipe (KG DN100) has shifted a bit too far into the room.
The floor plan is attached. Instead of a straight pre-wall installation at the toilet, we would now like to install a corner toilet using a Geberit Duofix for corners (the more expensive mounting frame – item no. 111.390.00.5 – so it can be positioned as far into the corner as possible). I don’t have the exact number right now, but according to the floor plan, the center of the wastewater pipe behind the toilet should be about 62cm (24 inches) from the exterior wall. There will be a 16cm (6 inches) floor buildup on top of the raw floor.
Based on this information, could someone tell me if it’s realistic to install the small Geberit corner element in the corner by the exterior wall and still maintain proper drainage (is it possible to achieve the right slope over that distance)? Or should I rather use a standard Geberit Duofix element (item no. 111.300.00.5) and install it diagonally in the corner (this would move everything about 12cm (5 inches) further into the room, but would bring me a bit closer to the wastewater pipe)?
It’s a bit urgent, as I need to order the mounting frames by tomorrow at the latest.
The floor plan is attached. Instead of a straight pre-wall installation at the toilet, we would now like to install a corner toilet using a Geberit Duofix for corners (the more expensive mounting frame – item no. 111.390.00.5 – so it can be positioned as far into the corner as possible). I don’t have the exact number right now, but according to the floor plan, the center of the wastewater pipe behind the toilet should be about 62cm (24 inches) from the exterior wall. There will be a 16cm (6 inches) floor buildup on top of the raw floor.
Based on this information, could someone tell me if it’s realistic to install the small Geberit corner element in the corner by the exterior wall and still maintain proper drainage (is it possible to achieve the right slope over that distance)? Or should I rather use a standard Geberit Duofix element (item no. 111.300.00.5) and install it diagonally in the corner (this would move everything about 12cm (5 inches) further into the room, but would bring me a bit closer to the wastewater pipe)?
It’s a bit urgent, as I need to order the mounting frames by tomorrow at the latest.
If it is a slab foundation and the KG pipe is fixed, a 90° HT branch was planned. In that case, you will likely need to build a stud wall even for a corner toilet, because the height will not work otherwise.
Alternatively, you could position the shower across from the second waste pipe. At about 2 meters (6.6 feet) distance and a 1% slope, this is also possible.
If there is a suspended ceiling, it can be done. Chisel out the concrete at the spot and install a 45° HT branch lower, so that the top edge of the HT branch is not much higher than the concrete ceiling. Then use an 87° bend and lay the pipe with a 1% slope towards the corner.
Alternatively, you could position the shower across from the second waste pipe. At about 2 meters (6.6 feet) distance and a 1% slope, this is also possible.
If there is a suspended ceiling, it can be done. Chisel out the concrete at the spot and install a 45° HT branch lower, so that the top edge of the HT branch is not much higher than the concrete ceiling. Then use an 87° bend and lay the pipe with a 1% slope towards the corner.
Ok, yes, that was also a problem because the connection for the shower would no longer be guaranteed. Yes, it is a concrete slab, and we definitely will not break it open for this; I would rather accept the original prefabricated wall construction. However, I have briefly coordinated with the construction company and we could run the shower drain to the sink, but it is about 2.6 meters (8.5 feet) away, not less than 2 meters (6.6 feet), though it should still be possible.
I have roughly marked the prefabricated wall element with the toilet rotated in the attachment. This is not the Geberit corner element, but a normal mounting element drawn slightly rotated. If I understand correctly, you could almost get out behind the drywall with two 87° HT elbows and a few centimeters (inches) of straight pipe in between, and then somehow reach the toilet connection. But aren’t there too many bends?
- The toilet element already makes a 90° bend downwards at the outlet
- Then it goes straight down a few centimeters (inches) just above the finished floor level
- There, an 87° elbow leads to the right toward the floor connection
- The first 87° elbow is embedded in the floor
- A few centimeters (inches) with a steeper slope to the second 87° elbow, which ultimately leads to the sewer pipe (KG pipe) in the concrete slab
- There is probably also an 87° or 90° elbow inside the concrete slab
I have roughly marked the prefabricated wall element with the toilet rotated in the attachment. This is not the Geberit corner element, but a normal mounting element drawn slightly rotated. If I understand correctly, you could almost get out behind the drywall with two 87° HT elbows and a few centimeters (inches) of straight pipe in between, and then somehow reach the toilet connection. But aren’t there too many bends?
- The toilet element already makes a 90° bend downwards at the outlet
- Then it goes straight down a few centimeters (inches) just above the finished floor level
- There, an 87° elbow leads to the right toward the floor connection
- The first 87° elbow is embedded in the floor
- A few centimeters (inches) with a steeper slope to the second 87° elbow, which ultimately leads to the sewer pipe (KG pipe) in the concrete slab
- There is probably also an 87° or 90° elbow inside the concrete slab
- With a slab foundation, you should avoid any chiseling.
- If the pre-wall system is installed, the shower should not necessarily be connected to the washbasin drain, but this must be decided by the onsite plumber.
- With a 16cm (6 inches) floor structure, a distance of 3m (10 feet) would still be just feasible.
- A pre-wall system, whether installed flat against the wall or in a corner, is needed in any case to properly route the ventilation of the drainage pipe.
- If the pre-wall system is installed, the shower should not necessarily be connected to the washbasin drain, but this must be decided by the onsite plumber.
- With a 16cm (6 inches) floor structure, a distance of 3m (10 feet) would still be just feasible.
- A pre-wall system, whether installed flat against the wall or in a corner, is needed in any case to properly route the ventilation of the drainage pipe.
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