I don't know about minimum requirements, but I don't even break a sweat at lifting 120 lbs.
In many jobs over the years we've been required to lift much more than that - up to 400 lbs in some cases (beam on the shoulder).
While in the Air Force back in the 80's and 90's we had a lifting machine to check people and it was over 100 lbs and 10 reps.
I fully support "team lifts" and using machines to do the work whenever possible though.
I'm only saying the number he gave you is actually pretty small.
Beware of false knowledge; it is more dangerous than ignorance. ~George Bernard Shaw~
Airco 300 - Syncro 350
Thermal Arc 161 and 300
Tried being normal once, didn't take....I think it was a Tuesday.