Originally Posted by ARI001
Maximum span for a 2x8 #2 SYP joist 16" o.c. in a residential living area is 12'10". Maximum span for a 2x6 #2 SYP joist 16" o.c. in a residential living area is 9'2". That assumes 40psf live load 10psf dead load.
I am hoping you have braced everything from below before you began hacking at the joists. If not stop everything and do so immediately. Also I see wires that are pinched and are going to be pinched when you add the sub-floor. You really need to stop and talk with an an engineer or architect and get a plan drawn up before you go any further. Also you need to get a building permit which you should have done before starting. Then you would have had a plan in hand before starting.
If you frame a wall below the kitchen wall 16 o.c. it will pick up the load and the kitchen wall will become a bearing wall also. You will need to verify load requirements and framing member sizes with your local building department.
If you sister the outside joists (you have to carry them at least to a load wall) and frame up a dbl header you may be o.k. I don't know how you are going to run your toilet drain (min 3" pipe) through a 2x6 when your only allowed a maximum hole 1/3 the depth of the framing member and must be 2" from the top or bottom.
Thanks for the quick reply. The length I had given for the 2 x 6 joists was overall length, not dealing with an unsupported span. The unsupported span of those joists from the bearing wall in the bottom of the one pic to the outer wall is less than 8'.
I'm in the process of getting a permit, obviously I jumped the gun. Some of the wiring will need to be re-routed,etc. I'm by no means thinking that all the work is done and a subfloor is ready to go down. I may be stupid, but I'm not crazy. (debatable, I know).
There is a wall in the basement below the wall I'd like to use as a bearing wall. I'll have to see if it is up to snuff with the building inspector. Good to know.
The drain for the toilet would not go through any of the joists that's why I'd like to head them off. I guess the sistered joists will have to be reworked. Thanks again for all the great info/advice.