With a bit of quick research. On average, a man that is 81.6 kg (180 lbs) should be able to lift about 50 kg (110 lbs) worth of weight overhead. Here is a rough chart to scale weight lifted versus strength:
S Max Lift
30 50 kg (110 lbs)
40 95 kg (210 lbs)
50 141 kg (310 lbs)
60 186 kg (410 lbs)
70 277 kg (610 lbs)
80 367 kg (810 lbs)
90 458 kg (1010 lbs)