Have you ever worked one of these jobs? I have. The average woman is not able to carry two 70 pound boxes of cable up four flights of stairs, multiple times and all day long, for ~$18 an hour.
It was tough physical work, and believe it or not most of my coworkers were in fact women, including my own sisters when they were old enough to get a job.
And again, ask yourself, who can do this job faster and more effectively? A team of men or a team of women?
It will always be the men, no matter how badly this bothers you.