Cracked block over cold joints in foundation

[Thoughtclaw]

Hey folks, I was called out to look at a new building where hairline cracks have appeared in the block over cold joints in the strip footing underneath. The customer says he'll be satisfied as long as it doesn't get any worse. I'm thinking of epoxying rebar into the existing footing and extending it out, and pouring another 2' of footing in those areas. Does anybody have a better idea, or any thoughts about that idea?

 

[TLHS]

What do you think the cold joint is doing? What type of movement is happening in the structure? Is it settlement related or do you think there's a more serious deficiency of some sort? If it's settlement related and there's no significant risk of failure, the first question is likely whether they're active cracks or not. The cheapest thing to do is monitor them for a while and see if they're moving. Maybe mount some crack monitor guages or something. But maybe the situation in the field makes it obvious what's happening?

 

[Thoughtclaw]

It appears to be settlement to me, but it's hard to say without digging out next to the footing.