Hello

When milling for electrical flex pipes in Ytong, should you mill from the electrical panel all the way to the box, or

Should you mill from the electrical panel, then run the flex pipes in the floor structure, then mill down to the box where it should be?

Or in the dropped ceiling, but then I have to drill through some load-bearing walls to get the pipes through.

Which is correct?
 
tommib
The right option is the one that provides you with the combination:

1. Appropriate placement according to the rules
2. Installation that meets functional requirements and is easy to work with for potential future expansion
3. Installation that is not in the way of other elements, such as plumbing, ventilation, or future expansion of these
4. Minimum possible routing (because it is labor-intensive/messy/time-consuming).

It is not generally possible to say how you should do it; the conditions on site determine it. Some lightweight concrete blocks are equipped with a hole in the middle for electrical conduits, while others require you to route all the way.
 
We are building exterior walls with siporex/light concrete and we plan to mill from the main electrical panels up to the inner ceiling, then we'll run VP pipes above the ceiling (along with the sparse panel) and then mill grooves again in the exterior wall where the outlets should be. Interior walls are framed OSB + gypsum walls, so that's traditional. I was considering running the pipes straight up to the cold attic (we are building a single-story house) and going through the moisture barrier and then back down, because I was wondering if that might be easier than running it above the ceiling. We'll see how it goes.

I am really happy we didn't decide to build all the interior walls with brick, it would have been so much extra work.

Good luck with your project.
 
Hello

We will probably do the same. Will you use double sparse to make it easier to pull the vp pipe?
 
No, we are not going to do that, we set our rafters at 2500 so it would be a bit too low to use double spacing.
 
Oh, we will have slanted ceilings, so we will have 2.9 on one side and 4, something on the other.
 
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Then you can place a 45x95 on its edge, giving you plenty of space for the pipes.
 
yep will be good. However, I will lower it a bit anyway to avoid drilling holes for ftx
 
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