I’m working with a construction company building a 1700 sf branch bank as an on-site observer/trouble shooter for the owner.
The plans call for the end nailing of 2×6 stud to plate with 2 each 20d. Neither the general or the framing contractor has a fastener source or tool that shoot 20’s.
The super has asked what a suitable schedule of standard 3″, 3-1/4″ x .131 nail would be equal to the 2-20’s?
I’ve run through my library of charts & etc. and find lots of schedules but no 20’s to anything conversion.
Help, please…………Iron Helix
Replies
Tell them to find a source.
http://bostitch.com/default.asp?CATEGORY=BOS%5FFRAM%5FNAILER&TYPE=PRODUCT&PARTNUMBER=N100S&SDesc=Heavy+Duty+Stick+Framing+Nailer
I wouldn't change it without speaking to your #### architect or engineer, because who ever spec'd 20's is an #### with no knowledge of reality
Thanks for the replies.....
The A/E is out of the picture...some kind of falling out/dispute that I am not privy to.
No rental source, contractors would like to use what is on hand rather than invest in a "one time tool" for 1700 sf frame. Could get out the "manual hammer", seems the current crop of framers have turned "wussy" !
Still looking for an easy way out!
............Iron Helix
Don't know if it is the same as 2-20d, but SOP around here for 2x6 stud to plate connections is 3-16d.
Nothing seems to be falling down.
Jim
I will go one step further3 3' nails stardard around here, never had anything fall down!
What about a palm nailer? (Never used one, so can't say that it'd work, but it's worth considering.)
What's the size of the plate? If it's 3x6 for shear walls, you're out of luck with anything other than 20d nails.
Hey draftingguy,
The plates are 2x6.
....Iron Helix
Big question mark then. Is it possible to get a different engineer to sign off on the equivalent nailing if the original one isn't involved anymore?
It should be simple to use the NDS for Wood Construction to come up with a justification - 3-16d sure seems adequate.
See the link below for equivalencies in length and diameter, but not numbers on shear or pullout strength.
http://www.mcvicker.com/offtech/smnail.htm
draftingguy & jim,
The whole sequence is in a very rural county (one of the poorest in the state of Ill.) and there are very lax standards. I was hired by the owners to "watch the construction" and to keep their "best interest at heart". Jumping through the hoops for another engineer's stamp is not a necessity of paperwork or $$$.
The access to correct technical information is what I need to fulfill what I am trying to do for these people and their very limited budget. These are not stereotypical bankers...more likely to see bluejeans and carhart shirts.
I normally work out of a local architects office as an on-call independent observer, but things are very slow locally and i have time to take on private clients. In that office we observe the AIA protocols and lots of paperwork trails.
Your two responses will head me in the right direction in assisting the GC's super to make sure the local framing sub is on the "up&up" with the engineers call of 2-20d's.
I sure do appreciate the information.......Iron Helix
Looking through the tables for the design values, it looks that 4 nails of 3 or 3-1/4 inch at .131 diameter would have the equivalent withdrawal and shear resistance of 2 20d's. That's for SPF on the 2x6's, which will easily take the four nails from a gun.
Hope that helps
Jim