# Cracking in Slab on Ground ### Issue Image: ![[Crack Slabs.png]] ## Issue Description: - Concrete slabs poured on the ground frequently crack. - If you ask an Engineer they will say they have "never seen a slab on ground which didn't have some cracking" - The cracking appears primarily around Basement Pits and around Columns. - It can be prevented by installing Trimmer bars and adding control joints to the slab. - The slab will still crack however by installing the control joints - the cracking will occur in the joints, we will be left with straight lines then rather than a spider web of cracks. - Customer don't like it when the cracks are unsightly, and it becomes one more issue to resolve with the Building Commissioner. ## Actions to Prevent this Issue: - [ ] Check that trimmer bars have been detailed in the structural drawings. - [ ] Check that the Sawcuts have been detailed on the Structural Drawings. - [ ] Check if the Engineer can provide extra crack control measures to the slab and implement those.