You would be able to keep a 'cell' within that garage totally dry, using membrane and stud materials, but you'd have to give up space, floor height and a chunk of cash. Another method would be an external foundation and add another external skin. Depends how deep your pockets are.
Lead would be ugly, but a flashing externally low down would prevent damp occurring on those bricks. We have used lead flashings as a last resort type remedy to prevent splash damp.
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