How much lifting on psych unit?

I know in my hospital there is not much turning. Most of the inpt's are walky talky. However they often have code greys and have to restrain the pt...

On average, not much; but there are times when you have to physically struggle with individuals (which can be much riskier, in terms of staff backs, than a planned turn or lift of a cooperative client in a bed) and lift individuals (off the floor, not out of a bed or wheelchair). Everywhere I've ever worked (on inpatient psychiatric units), nursing staff were required to meet the same physical requirements and expectations as staff everywhere else in the hospital for employment, and there were certainly plenty of situations in which heavy lifting was required.