ᐅ Plumbing Rough-In Inspection: What Should We Pay Attention To?
Created on: 18 Aug 2022 10:19
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fromthisplace
Hello everyone,
We are now having the shell inspection with the plumber. We already selected the fixtures back in March.
1. About the heating:
Our initial scope of work listed two models. The reason given was: "Depending on which one fits your house better." The contract now specifies the Stiebel Eltron LWZ 5S. So, I assume that a heating load calculation has been done and that this system fits our house, or am I mistaken?
2. About the inspection:
I understand that we will finalize the exact locations for the water connections and toilets. One point is the utility sink in the technical room. We would prefer a full-sized table here and need to discuss whether the plumber will install this or if we are allowed to buy it from the furniture store.
3. About the underfloor heating:
As the client, do we have any say in this? I would like to express that I prefer a low flow temperature and to ask if they can lay the loops quite close together. Of course, this is more like telling the contractor how I would like their work to be done.
Thank you all.
We are now having the shell inspection with the plumber. We already selected the fixtures back in March.
1. About the heating:
Our initial scope of work listed two models. The reason given was: "Depending on which one fits your house better." The contract now specifies the Stiebel Eltron LWZ 5S. So, I assume that a heating load calculation has been done and that this system fits our house, or am I mistaken?
2. About the inspection:
I understand that we will finalize the exact locations for the water connections and toilets. One point is the utility sink in the technical room. We would prefer a full-sized table here and need to discuss whether the plumber will install this or if we are allowed to buy it from the furniture store.
3. About the underfloor heating:
As the client, do we have any say in this? I would like to express that I prefer a low flow temperature and to ask if they can lay the loops quite close together. Of course, this is more like telling the contractor how I would like their work to be done.
Thank you all.
R
RotorMotor20 Sep 2022 15:35I wouldn’t go below 20cm (8 inches).
Reasons:
- Repurposing the room
- Possible cooling through the floor
- Possible "short circuits" due to too short circuit lengths
20cm (8 inches) everywhere and 10cm (4 inches) in the bathroom is already a compromise.
Making further compromises will likely lead to little satisfaction.
Reasons:
- Repurposing the room
- Possible cooling through the floor
- Possible "short circuits" due to too short circuit lengths
20cm (8 inches) everywhere and 10cm (4 inches) in the bathroom is already a compromise.
Making further compromises will likely lead to little satisfaction.
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fromthisplace20 Sep 2022 16:19We spoke with our site manager. He understands the issue with the bathrooms and wants to enforce tighter plumbing installation in these two rooms, just as you suggested.
In the meantime, a heartfelt thanks once again for sharing your expertise. 🙂
In the meantime, a heartfelt thanks once again for sharing your expertise. 🙂
A quick intermediate question: Isn't this the typical necessary approach in developer projects with lazy and/or incompetent MEP planners/plumbers? Meaning, keeping the pipe spacing in the bathroom as close as possible, and everywhere else adjusting it so that it fits reasonably well?
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fromthisplace20 Sep 2022 17:09I can fully confirm that impression, 100%. 😀
In addition to our small general contractor, our plumbing company also works for a major prefab house supplier and is currently constructing a larger hall.
In addition to our small general contractor, our plumbing company also works for a major prefab house supplier and is currently constructing a larger hall.
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SaniererNRW12320 Sep 2022 19:32Pacmansh schrieb:
Just a quick question: Isn’t this the typical approach in developer projects with lazy and/or incompetent MEP planners/plumbers? Like, keeping the pipe spacing as tight as possible in the bathroom and elsewhere making it fit more or less? Yes. Plus the usual “We always use this WP” and then it’s comfortably warm everywhere. Whether it’s efficient or not doesn’t matter to the general contractor.
Note to everyone: Because of the label “Summary of preliminary design,” I assumed the final and efficient design would follow later. What the heating technician did was produce a design with a simple program in just three clicks. It didn’t cost anything but is sufficient for a cost estimate. The correct design by an MEP planner/engineering office takes a few days and about 150€ (around $160). That’s how the process should be. Then you end up with a proper bathroom.
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fromthisplace20 Sep 2022 20:33SaniererNRW123 schrieb:
What the heating engineer did was create a simple system design with just three clicks using basic software. It didn’t cost anything but is sufficient for a cost estimate. That is how the process should be. This way, you end up with a proper bathroom. I will share this as final feedback on this trade with our general contractor. Until then, I’m glad that we have at least selected a suitable heat pump rather than just taking the one currently available, and hopefully the child bathrooms will have denser layouts.