Drilling Holes: Stud Frame Walls
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- Опубліковано 3 лют 2023
- During the rough stage, stud frame walls often require drilling or notching to allow for pipe installation. However, there are limits on how much a stud can be notched, bored or drilled. In this video, Plumber-Tom explains some of the requirement that you need to know if you are going to be drilling or notching studs.
The International Building Code requires limits to notching or drilling studs in order to preserve the structural integrity of the stud. For bearing walls a stud may be notched 25% and bored 40%. For non bearing walls a stud may be notched 40% or bored 60%. Understanding these basic requirements is critical before you begin cutting or drilling studs. - Розваги
Be careful on oversimplification on the bearing and non bearing walls. Many non bearing walls have a double plate in order to match ceiling heights. I agree it is good to assume that a bearing wall has 2- Top Plates but that too is not always true depending on how close the studs are, the size of the studs, steel and p- laminated beam construction, quite a few variables. However the information on hole sizes etc. was excellent and really helpful in planning my plumbing strategy on a Master Bath remodel. Well done.
Thanks! Good point. When in doubt assuming it is a bearing wall will keep us from removing too much structural material.
@@plumber-tom9470 It can also kill a project if your chasing 1 1/2 PVC waste lines through a 2x4. So if you in that situation then don’t give up and check it out with a professional in the know. Good video I liked the math information helped me confirm my strategy.
Good advice. Thanks for watching. @@Festvangelist
Thanks
You’re welcome!
so going to convert a garage to an apartment. Slab floor and 2x4 outer walls. Plan on running kitchen,bath and laundry on 1 side. Don't really want to cut up slab, can't get 1-1/2 inch drains in 2x4's. So what if I made a false wall in front of the load bearing wall, nailing 2x3 to the 2x4's of the outer walls and add plates to cover the gaps? Would that be feasible?
Yes. Adding a frame wall is a great way to protect the structure.
Hey Tom amazing content! I'm wondering if there is a limit to the maximum number of studs that you can drill through on a NON-bearing wall?
I am not aware of a limit that way. As long as you stay in the percentages for hole sizes.
What about small holes through king and jack stud packs, i.e. sides of windows? Does the code treat these differently?
Plumbing code addresses notching and drilling in the appendix. But it is copied from the International Building Code. There might be more about it in the building code but I am not familiar.
Great summary. Couple of minor corrections:
1. top plate isn't necessarily the right way to tell load bearing vs non-load bearing. I have non load bearing walls in my house (they run parallel to ceiling/floor joists) that have double top plates
2. 0.875" is actually 7/8"
3. You forgot to mention that for load bearing walls, you can double up a stud for holes between 40-60%.
Thanks for clarifying. I appreciate your knowledge.
7/8” is also .875. Much easier to do the math that way. I like the calculator approach…
@@Festvangelisthe said a little more than 3/4”, that’s why I mentioned it’s actually 7/8”
What about if you add a stud shoe when the hole is 2 inch on 2x4? Or is it just a no-go all the way around.
Stud shoes are an acceptable option in most cases. You’d want to know the installation requirements and conform to that.
@@plumber-tom9470 yeah... Sometimes it's just a no go for our inspectors... But understandably... Some people try to use them in some pretty extreme cuts ...
Sometimes it's just too far gone...
Vent stack for bathroom vanity goes through top plate non load bearing wall need stud shoe.
Good point. Thanks.
Im confused .... so we're breaking code by running 2" pipe through 2x4 non bearing ???? So I can ask my gc for 12" plumbing walls :0 I'll try
Correct. Framers should be giving us thicker stud walls when we are running pipes in them. But most of the time they are just following the plan. So we could blame the engineers and architects. Either way, it can be difficult to have them provide sufficient stud walls, and many inspectors do not know the difference or do not care.
Different codes for different areas
Hence a plumbing wall should have at least 6 inch studs not 4
@@user-nn7uy3ri3j I can't count how many times I wish our contractors would do 2 * 6 walls. Every now and then we get a smart one that'll do it. Other than that we're left trying to fit that 2 inch pipe on freaking 2*4 ... It would be really smart if they would at least do two by six walls where there's plumbing
Yes you are right the 2x4 wall is too small for 2”. I was able 1 1/2 waste lines to the 2” waste line and vent stack which were in 2x 6 walls adjacent to my Bath remodel. The 1/2” waste line for a lavatory sink is plenty big enough and provides flexibility to use the 2 x 4 “ stud.
How are you getting 3.5 and 5.5 inches brother?
That is what you find when you actually measure a 2x4 or 2x6. They are actually 1/2” smaller in dimensions. Historically they were actually 2x4 inches but to Eve lumber they make them smaller but call them the same thing.
Very clear education, I would have clicked like and subscribed if no noisy music 😂😂😂
Thanks for the feedback. I will consider less music in the future.
But it won’t feel as manly with out it😢
Right! Sometimes rockin' music can really pump up the work! @@WEYABAGO
maybe im wrong but I feel like in minnesota we dont follow this at all.
You might be on a different code.
Probably because snow loads.
Background music is so loud.
Sorry. I do all my own editing. Still learning. I will work on that. Thanks for the feedback.