I have an existing garage that is to remain. All four walls. A new floor is being added to replace the ceiling for a bonus room above. 11.875 TJI's at 16" o.c. These will not bear on the existing top plates. Instead, a 2x12 will be bolted to the existing stud walls. One, 1/2" dia. bolt per stud. ??? Maybe 16" o.c. maybe 24" o.c who knows. At any rate, the TJI's will be attached to the 2x12 by means of joist hangers. Above the existing top plates will be built the new addition using 2x4's @ 16" o.c.
Anybody know the magic rule for figuring out if one 1/2" dia lag bolt every 16"-24" is sufficient for this loading? Garage spans about 21 feet by 21 feet. 30 live load 10 dead load.
I've got a stamp/seal on this one but no calcs.
Anybody know the magic rule for figuring out if one 1/2" dia lag bolt every 16"-24" is sufficient for this loading? Garage spans about 21 feet by 21 feet. 30 live load 10 dead load.
I've got a stamp/seal on this one but no calcs.