About 3 months ago we had some basement repairs done that included correcting a dip in the center of the house with 3 support columns that raised the house back to level (jacked up by 1.5 inches).
Last week we heard a loud crack from the garage and discovered that 3 sistered ceiling joists that are between the house and garage have gone from being tightly screwed together to being separated by about an inch. The one nearest the house is pulling towards the house and the other two remain mostly straight. Also the joist hanger that connects the house joists to these sistered beams has fully pulled out on one side. I'm trying to determine if this is just a minor part of the house readjusting or a an issue that needs addressing quickly. A structural engineer who we originally consulted declined to visit the house as he said it didn't sound like a major issue, but I remain concerned and would welcome suggestions from others who have had their houses raised.