• Welcome to The Building Code Forum

    Your premier resource for building code knowledge.

    This forum remains free to the public thanks to the generous support of our Sawhorse Members and Corporate Sponsors. Their contributions help keep this community thriving and accessible.

    Want enhanced access to expert discussions and exclusive features? Learn more about the benefits here.

    Ready to upgrade? Log in and upgrade now.

Stud packs aka more than two studs nailed together

B

Bryant

REGISTERED
Joined
Dec 19, 2018
Messages
116
Location
Virginia
Scratching my head on this one, but after diving into the commentary, specifically the fastener schedule in IRC/VRC 602.3 (1) item 8 stud to stud. there is no fastener schedule that I can see for more than 2 studs used as column supports. If that is the case, it is a not prescriptive, but rather would require engineering to the degree that there are specifications from the NDS & AWC that would give a nailing/screwing pattern. Would that be a correct assessment?

Thanks in advance
 
I think item 8 in this table would cover a dbl stud connection. For gun nailed connections, 16" oc should cover it.
 
In a 2-stud assembly, are all nails allowed to be driven from the same side, or are they required to be from both sides?
 
Ty J. said:
Is a triple stud not still a connection of stud to stud to another stud? Same requirement applies, no limit to how many times the cycle can repeat.

View attachment 6143
Click to expand...
That I would agree on, since one can determine the nailing pattern at 3 members. The problem amps up when it goes beyond that. How could you know the 3rd member in was sufficiently nailed before the 4th member is applied?
My main point was that when studs are utilized as a column support, there is no defining criteria (prescriptive path) to allow that to happen without some type of calculations to support the loads imposed, specifically in this case a concentrated point load. It is one thing to have multiple studs in a wall, think king post with multiple jack studs supporting an uniform load, but quite another with concentrated gravity loads on a bunch of studs nailed together. The compression alone would cause the stud fasteners to withdraw, hence why this guys are called stud packs and are engineered( fastener schedule, i.e. full depth nails, screws or bolts) to mimic the same as a PSL post or equivalent. would you agree ?
 
e hilton said:
In a 2-stud assembly, are all nails allowed to be driven from the same side, or are they required to be from both sides?
Click to expand...
See Ty J's pic of the fastener schedule and notice that the nails are long enough to penetrate thru to the other side. The trick is at more than 3, how do you get there prescriptively by the code?
 
When using 3 studs logic would hold that the center stud receives nails from the studs on either side in a staggered patterns such that they don't intersect or you may split the center stud.
 
I've always specified solid timbers for columns embedded in walls. My main concern is that in a future renovation somebody will just pull out multiple 2-bys without looking to see if they support anything, but might think twice before removing a solid timber.
 
You must log in or register to reply here.
Back
Top