Equal opportunity employment, if a woman takes on what is traditionally a mans job, should she be cut any slack because she's a woman?

Now women don’t get all upset, this goes for men to, but if the job says says you have to heave a 80lb pipe up a ladder so the welder can weld it into place, should the woman be given any slack for the heavy lift?
After all she applied for the job, not saying that there are a lot of women out there that couldn’t do the job just fine.
This reminds me a few years back, a woman trucker, wasn’t strong enough to chain up her truck, and had to have another driver do it for her, should she be at that job if she can’t do the full job, or should she be given some slack because she is a woman?
Regardless of sex, if you can’t do the full job, man or woman, should you be at that job, or is it OK to play the equal opportunity card and get the job that way?