Table r404 4 1 takes a 5 5 icf basement wall up to 10 0 but you re not bound by this if you use aci.
How thick is basement concrete wall.
Maybe even two rooms one on each side of the wall if it is into another room.
Design strength of the concrete concrete blocks and mortar are very important.
There are many variables which control overall strength of masonry or poured concrete basement foundation walls.
In general poured concrete basement walls that are 8 feet tall or less and have no more than 7 feet of soil pressing against them from the outside function well at a thickness of 8 inches.
Poured concrete foundation walls that are less than 8 feet tall and have soil outside that is 6 or 7 feet deep against the wall can often be 8 inches thick and function quite well.
Increasing the strength of the concrete mix or the thickness of the wall increases the wall s capacity.
Table 4a is based directly on the aci method but for table 4b the author has applied a reduced strength reduction factor a factor of safety.
Then remove the tape.
Irc r404 4 refers icf design to aci if not using their tables.
When a taller wall or a higher level of soil or both come into play the thickness should increase to 10 inches.
Tape a one foot by one foot square of plastic sheeting plastic kitchen wrap will do to the concrete wall in your basement with duct tape and leave it in place for 24 hours.
I still find dusty things in he basement.
The gas powered concrete saws really do a fast job but the dust is abundant.
This was 9 or 10 years ago.
Ibc 1909 6 1 limits a structural plain concrete basement wall to 7 5 but that s not your situation.
So taller walls in heavier soils should be made thicker or with stronger concrete.
The thickness of the wall with regard to its height is also extremely important.
Good luck regards walt.