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Update: My final solution was to drill and epoxy #3 bars at 24" OC (every 3 CMU courses) with 18" of embedment into the existing walls. However, there was an ice storm in late December that revealed more structural problems with the building only to be exacerbated by the winter storm from...

r13 and KootK, Thank you both for your responses, it is much appreciated.

Kootk, I agree with you. Originally, I was leaning towards grouting the anchors/dowel bars into the existing walls. I'm just not sure that grout would provide sufficient adhesion and I have very little experience with epoxies. Thanks for all of your help.

Kootk, That is exactly the situation. Do you think it would be a good idea to drill and epoxy or drill and grout the dowel bars into the existing wall?

r13, The existing walls are solid. The main problem with the existing walls are the mortar joints in the exterior layer. If possible, I would like to avoid anchoring the CMU blocks to mortar joints. Thank you

KootK, Yes, that is correct. My apologies for not being more descriptive.

I am currently in the process of designing an exterior, load bearing CMU wall for a church. The church is around 100 years old and was originally constructed with clay brick walls (roughly 4 4" bricks thick) with an additional layer of brick veneer. The wall I am designing is 44 feet wide and...