Deck Ledger Board into solid foundation wall
user-7258041
| Posted in Construction Techniques on
I need to attach a 2 x 10 ledger board for a deck on a solid foundation wall.
And have a few questions/ concerns
Concern:
When attaching ledger board to a foundations wall I cannot use the required 2-7/8 screws that the major manufactures of joist hangers require to meet their standards/codes.
–Should I use a Double 2 x 10 ledger board, so I can use the 2-7/8″ screws with the joist hanger?
-Also would like to know if I do need a double 2×10 ledger board should use 5/8 expansion bolts instead of 1/2 expansion bolts?
I’m having trouble finding 1/2 expansion bolts long enough to use with a double 2×10 and a 1/2 air gap puck and be able to insert a least 2-1/2 inches into the foundation.
Many Thanks in advance
Bob
Replies
Don't use screws to attach the joist hangers, use 1 1/2" hanger nails. I use something like the Red Head LDT bolts to attached ledgers to concrete. I usually use a 6" X 5/8" at a minimum.
Simpson/ says you shouldn't use 3 1/2" nails or 2 1/2" SD Connector screws into joist hanger on the the header to meet specs/code.
Maybe I'm missing something when you're saying 1 1/2"
I was debating using expansion bolts vs Red Head LDT bolts.
Thanks
Bob
'
What hanger are you using? Simpson calls for 10d angled nails on LUS hangers on 2x framing for instance
Whatever you do it has to be approved by the building inspector (or be code compliant if you did get a permit :) ), so I'd recommend that you go to city hall and discuss it with them. Building codes are specific to your state, so you might get erroneous information from this board.
I checked with the building inspector they refer me to IRC.
I am using LUC hangers.
The IRC says nothing about this. You need to refer to Simpson's literature. Use a Simpson 10d nail that's 1 1/2" long. There is no reason for a double ledger. I'd use 2 expansion bolts for each joist. 3/8 should be fine with that many bolts unless your plans show different.
Is this a walk out deck or a second story deck? If walk out I just add some additional piers and a beam set back from house wall (1') and run joists to a 2x rim joist that is set back from house wall 1/2" to 3/4". This allows debris, water, etc to run straight to ground and most importantly no potential rot at ledger. Grace membrane on top of all beams and joists.