Confirming Existing Footings Under Basement Stem/Stud Wall for New Point Loads

Hi,
I have a question regarding the best way to determine the actual physical size of the footings under an interior basement stem & stud wall supporting the main floor and second floor. We wish to remove the sud wall on the main floor to open up a Kitchen to a family room. We have stamped drawings for the mods which note that we need to confirm the width of footings under the point loads are 24″ wide by 8″ deep. If not, we will need to extend the footings under the point loads from the main floor.
What’s the best way to confirm the existing footings? I am thinking of finding a long coring bit for a rotary hammer drill (bosch RH540?) and look at the core, but I can’t seem to find longer coring bits. Before using the coring bit, I would “feel” along the width by just using a 3/4″ bit until we don’t hit the footings. If the footing isn’t 24″ wide, there’s no need to core the footings.
Because the room on one side of the basement wall is finished, we’d really like to minimize the disruption in that room. Can these footings be offset along the centreline of the wall?
Thanks for your input in advance.
Regards,
Kevin
Replies
Not enough info to evaluate.
Is the supporting concrete a pad directly under the posts in the basement or is there a continuous concrete wall that's parallel to the removed bearing wall?
A sketch would be helpful.