Cutting Hole for Vent in 2nd floor rim joist?
#1
01-07-14, 01:28 PM
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Cutting Hole for Vent in 2nd floor rim joist?
We are building a house and we are looking to vent the range vent hood outside. What I am wondering, is if we can vent the hood out where I have circled in red in the image. It requires a 6" hole to be cut to the outside (rim joist is a 2x12). The wall is on the non-gabled end of the house. And in case it isn't obvious, this is the first floor and the duct would run in the joist space on the right hand side of the picture. There is a 2nd floor above this as well (which is probably obvious) Is this doable or do we need to consider another solution.
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01-07-14, 04:39 PM
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What's the largest hole which can be SAFELY cut through a 9 1/2" x 1 1/2" header joist?
As mentioned in the above site, dryer vents are cut through the rim joists all the time & 6" should be okay in a 2x12. Other answers mentioned other issues.
As mentioned in the above site, dryer vents are cut through the rim joists all the time & 6" should be okay in a 2x12. Other answers mentioned other issues.
#3
01-07-14, 05:49 PM
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I agree w/Pulpo...
Drill your hole along the neutral axis of the rim joist (in the center) and it will be fine. Your rim joists are sitting on a top plate and are not only solidly supported underneath but are also covered with structural sheathing so there is no concern about drilling a 6" hole in them.
Drill your hole along the neutral axis of the rim joist (in the center) and it will be fine. Your rim joists are sitting on a top plate and are not only solidly supported underneath but are also covered with structural sheathing so there is no concern about drilling a 6" hole in them.
#4
01-07-14, 06:17 PM
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Originally Posted by XSleeper
I agree w/Pulpo...
Drill your hole along the neutral axis of the rim joist (in the center) and it will be fine. Your rim joists are sitting on a top plate and are not only solidly supported underneath but are also covered with structural sheathing so there is no concern about drilling a 6" hole in them.
Drill your hole along the neutral axis of the rim joist (in the center) and it will be fine. Your rim joists are sitting on a top plate and are not only solidly supported underneath but are also covered with structural sheathing so there is no concern about drilling a 6" hole in them.
#6
01-07-14, 09:39 PM
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The code is a list of restrictions, not a list of what is permitted. It's not in the code because there are no restrictions, within reason. The restrictions cover top plates, floor joists, headers, girders, rafters, things that are structural and span a distance unsupported. A rim joist does not span anything.
The only way you could get into trouble is if your hole is HUGE and a framing member (a king stud and trimmer that is holding up a large header for example) falls directly over a GIANT hole in the rim joist. So maybe just take a peek upstairs and make sure your hole isn't going to be directly below the edge of a door or window since the header weight would be right there.
The only way you could get into trouble is if your hole is HUGE and a framing member (a king stud and trimmer that is holding up a large header for example) falls directly over a GIANT hole in the rim joist. So maybe just take a peek upstairs and make sure your hole isn't going to be directly below the edge of a door or window since the header weight would be right there.
#7
01-08-14, 04:14 AM
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Originally Posted by XSleeper
The code is a list of restrictions, not a list of what is permitted. It's not in the code because there are no restrictions, within reason. The restrictions cover top plates, floor joists, headers, girders, rafters, things that are structural and span a distance unsupported. A rim joist does not span anything.
The only way you could get into trouble is if your hole is HUGE and a framing member (a king stud and trimmer that is holding up a large header for example) falls directly over a GIANT hole in the rim joist. So maybe just take a peek upstairs and make sure your hole isn't going to be directly below the edge of a door or window since the header weight would be right there.
The only way you could get into trouble is if your hole is HUGE and a framing member (a king stud and trimmer that is holding up a large header for example) falls directly over a GIANT hole in the rim joist. So maybe just take a peek upstairs and make sure your hole isn't going to be directly below the edge of a door or window since the header weight would be right there.
