Grew up in construction and worked it for about 10 years in a supervisory position. Never had a problem with it at all and that was back in the 70s/80s. Well, okay, one time I got tied to a column about 17 stories up but they were just kidding. Fuckin' steel workers, man. They're a tough bunch. Make them your friends & no one will fuck with you.
I come across as pretty butch (often get asked if I'm married, or a cop--what's up with that fantasy?) but I've been out since my early 20s. I noticed only very few snickered behind my back on construction sites, less than I got for being Jewish growing up in an Italian neighborhood, but even some of those guys would come on to me after hours if we were out partying. I drew the line though because of my position. Some of the guys used to discuss their sexuality pretty openly with me, as if I was their sex therapist.
Since then I still associate with many in the industry on occasion because my family still works it. My brother's an engineer and we frequently host holiday dinners attended by colleagues in the field. I actually like construction guys very much, particularly the guys who work in the field. I'm sure there are jerks in every vocation but my feeling is that construction guys tend to be pretty much down to earth. In fact my brother recently buried his best friend, a contractor. Totally str8. Totally a construction guy. Totally one of the warmest, nicest guys you'd ever meet.