Design strength of the concrete concrete blocks and mortar are very important.
How thick is basement concrete wall.
Ibc 1909 6 1 limits a structural plain concrete basement wall to 7 5 but that s not your situation.
Then remove the tape.
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.
As soon as you go higher or have greater depths of soil pushing against the wall you need to increase the thickness to 10 inches.
So taller walls in heavier soils should be made thicker or with stronger concrete.
I still find dusty things in he basement.
There are many variables which control overall strength of masonry or poured concrete basement foundation walls.
Drill holes to allow the vac system to draw from both rooms until you have a large vent hole.
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.
The thickness of the wall with regard to its height is also extremely important.
Irc r404 4 refers icf design to aci if not using their tables.
Irc has a lot of prescriptive stuff on icf walls.
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.
Good luck regards walt.
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.
When a taller wall or a higher level of soil or both come into play the thickness should increase to 10 inches.
The gas powered concrete saws really do a fast job but the dust is abundant.
Maybe even two rooms one on each side of the wall if it is into another room.