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Can I add a second story using an 8″ CMU wall foundation?

April 26, 2017cmu foundation story wall

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Can I add a second story using an 8″ CMU wall foundation?

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I would like to know if it is possible to add a second floor on an 8″ CMU foundation wall? My home (built in 1966) is on a flat site, with non-expansive soils, in a temperate, dry climate. The foundation has no cracks that I can see and since the basement is currently 80% finished I know that it is also water-tight – no leaks that I have seen. It appears that the house is level with no settling. In short the house seems very solid. The first floor walls are 2×4 stud walls. I have found a logical place for the stairs. I’ve checked local codes and it appears that I am well within height and setback limits. I thought before I consulted with a structural engineer I would ask if 8″ CMU walls can typically support a new second story addition or not. If they can typically support a new second story addition is the retrofit required (if any) any more or less costly or complicated than an 8″ concrete wall. I appreciate any feedback anybody has!