Preposterous. I see women in construction, utility and farm work all the time – and don't tell me that I'm just seeing the exceptions to your absurd rule all localized in my little slice of rural living where hospitals and clinics are desperate for any warm body to fill nursing positions. Women are more than capable of doing the jobs you're talking about.
Yes, women probably can do the hours and days of work on all those crews. They just don't. Here's some more: Wrecking, oil drilling, fishing vessels (the large ones), mining, trash collection and the maintenance of the landfills.
Commercial drivers licenses are 20:1 male to female. I personally was in an area with a high population of commercial truck drivers and every one of them had a story about the - read solitary - woman they met who was also a CDL.
Again, women probably could do all of these things - they just don't. I know people like to cite harassment and the like as reasons; but having worked blue collar, you just get harassed. You either deal with it and do the job or you don't and don't. Anyhow, I just don't see the point of pointing out that a few women do some or all of these jobs.
For the record, i'm for women being included in the SSS in the US.
My point was more to address the claim that women can't do the jobs, when that's patently false and we can all see with our eyes that they do actually work these jobs right now. I don't mean to claim that the crews I see are 50% women and 50% men†. Obviously women work these jobs at a much lower rate than men do, and whether that's due to harassment or not is an interesting thought exercise but best left to someone other than me to chew on.
† One area that I do think is close to even is farm work, at least in my part of rural Iowa. Working on a dairy from age 14 to 20, and just living in the area for my entire life, I see (anecdotally) just as many women doing manual farm labor, driving tractors and handling livestock as I do men.
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.