I have a new home ( < 2 years old) and just noticed that the concrete slab around one of the lally columns is cracking with a roughly 2 inch chunk breaking up. One of the two concrete nails is also raised (relative to the other) by about 1/2 inch. Also, another lally column connected to the same I-beam has a nail protuding by roughly 1/2 as well. Is this something serious or just common settling of the house?
The builder gave a 1-year home warranty but that has passed. Should I take it to them anyway since its structural?
Contact your builder and try to get another non-biased opinion from either another builder or some other qualified entity. Safety is key!