A contractor will cut corners to save money, hell I would too. I have notice is spec lately, there is a pay item for each item in the spec, for example. Vapor barrier, concrete psi, compaction test.

I have seen where the crew do not use vapor barrier it get deducted from total cost, and its a big deduct. I seen one on trash pickup. everyday there trash on the ground, deduct, but pays if its clean.

I have seen deduct on safety, caught without safety harness, deduct.
Concrete no meeting spec deduct.

Highway depart has one, 105% psi, its a deduct, 99-103% psi its a 105% pay. below 99% big deduct and tearout.

Have anybody seen line item ppay items.

It make Mike Holmes look simple