actually, there's a pretty strong push to get women into AEC (architecture, engineering, and construction) fields.
http://www.new-nyc.org/pages/become.html
http://www.pwcusa.org/
http://www.nawic.org/nawic/default.asp
http://www.wcoeusa.org/
I am sure that there are some women who might want to go into construction who are turned away by site managers who don't believe a women can perform as well or that they will be a "distraction" on male-dominated worksites. I am sure that a few more might have been turned away by a few bigots who aggressively treat them as though they don't belong on site.
[edits below] Just wanted to add that it is also easier to fight a fight based on the idea that women are just as smart as men, but relatively harder to fight the fight that women are just as strong as men. Even if many women are stronger than many men, in aggregate men do have the biological advantage with regards to strength.