[paul_arc]

Im adding a sub panel and need to run a 1 1/4" conduit. I would like to put the conduit in the wall but wondering what is the maximum size hole that I can drill through the studs. It would probably need to be drilled 1 1/2" size and have to drill about 6 studs. I can run it surface if needed but would like to put it inside the wall.

Whats the max size I can drill through the studs?

 

[220/221]

If it's not a bearing wall, I wouldn't be concerned. You still have an inch on each side left.


Think about steel studs. They have 1bout 1 1/2 inch holes punched in them every couple feet.


Technically, I don't know the answer. :jester:

 

[paul_arc]

If it's not a bearing wall, I wouldn't be concerned. You still have an inch on each side left.


Think about steel studs. They have 1bout 1 1/2 inch holes punched in them every couple feet.


Technically, I don't know the answer. :jester:

Thats exactly what I was thinking also, "technically" I dont know the answer either:huh:

 

[Speedy Petey]

40% allowed in bearing walls and 60% allowed in non-bearing walls.

For a 2x4 this is 1-7/16" or 2-1/8"

Either way you will need nail plates on BOTH sides of every stud.

 

[Bigplanz]

40% allowed in bearing walls and 60% allowed in non-bearing walls.

For a 2x4 this is 1-7/16" or 2-1/8"

I believe you, so don't take this question the wrong way. Could you provide a code citation? This is really good information, and I would like to be able to tell people this and back it up. Thanks, sincerely.

 

[Gary in WA]

Look at wall framing here:

http://www.codecheck.com/cc/pg03_04building.html

Be safe, G

 

[Speedy Petey]

I believe you, so don't take this question the wrong way. Could you provide a code citation? This is really good information, and I would like to be able to tell people this and back it up. Thanks, sincerely.

I have this Wood Boring Guide .pdf file. It is from:

Western Wood Products Association
522 SW Fifth Avenue Suite 400
Portland, OR 97204-2122
503/224-3930 Fax: 503/224-3934
e-mail: [email protected]
web site: http://www.wwpa.org

I don't remember where I got it but you can try it here: http://www2.wwpa.org/Portals/9/docs/PDF/A11.pdf

I had to join their site to see if it was still available. It is but you may have to join (for free).

 

[Bigplanz]

I have this Wood Boring Guide .pdf file. It is from:

Western Wood Products Association
522 SW Fifth Avenue Suite 400
Portland, OR 97204-2122
503/224-3930 Fax: 503/224-3934
e-mail: [email protected]
web site: http://www.wwpa.org

I don't remember where I got it but you can try it here: http://www2.wwpa.org/Portals/9/docs/PDF/A11.pdf

I had to join their site to see if it was still available. It is but you may have to join (for free).

Thank you very much.

 

[Speedy Petey]

Did the .pdf link work for you?

 

[Bocolo]

Speedy, the pdf works. Very good info. Thanks.

 

[Bigplanz]

Did the .pdf link work for you?

Yes, it did. Very interesting reading. Thanks.

 

[Michael Thomas]

- http://www.canyonco.org/dsd.aspx?id=8823

____________
Home Inspection: "A business with illogically high liability, slim profit margins and limited economies of scale. An incredibly diverse, multi-disciplined consulting service, delivered under difficult in-field circumstances, before a hostile audience in an impossibly short time frame, requiring the production of an extraordinarily detailed technical report, almost instantly, without benefit of research facilities or resources." - Alan Carson

 

[Speedy Petey]

IRC R602.6
Same info. Perfect reference Michael. Thanks.

 

[220/221]

Do you have a drawing like that for floor/ceiling joists?

 

[Speedy Petey]

Do you have a drawing like that for floor/ceiling joists?

In that .pdf I linked above.

 

[Michael Thomas]

- http://www.canyonco.org/dsd.aspx?id=8822

-------------------
Home Inspection: "A business with illogically high liability, slim profit margins and limited economies of scale. An incredibly diverse, multi-disciplined consulting service, delivered under difficult in-field circumstances, before a hostile audience in an impossibly short time frame, requiring the production of an extraordinarily detailed technical report, almost instantly, without benefit of research facilities or resources." - Alan Carson

 

[paul_arc]

very good info, thanks guys!

 

[kbsparky]

Im adding a sub panel and need to run a 1 1/4" conduit.....It would probably need to be drilled 1 1/2" size....

You will need a minimum 1-3/4" hole size to accommodate a 1¼" trade size conduit.

If you are installing PVC conduit, then a 2" hole is required for any couplings to pass through.