overhang questions

Here's a pic, Osso.

http://www.cnwooden.com/UploadFiles/20081078481743.jpg

uh oh, I don't get it..

Albert Fink designed the truss bridge system that was later developed into a truss roof design





The modern fink roof truss







Here the "gang" or " gusset" plates can be clearly seen





Raising a roof truss





The truss system led to large cost cutting advancements in post-war home construction.

Just to give you an idea. Me and 2 guys used to set a 3,000 sq ft roof in 2.5 hours with a crane. The cost of the trusses averaged $2,800

Osso, these gangplates are hydraulically pressed into the wood, across the joints in a truss. [see Panzade's pics]

In the picture I posted, you can see hundreds of small nails, caused by long perforations punched in the steel plates.

Being quite short, long as perforations go but short as standard nails go, they will pull out easily when subjected to a force sideways to the vertical plane of a truss. But their holding power when the truss is in a braced vertical position is really quite remarkable.

Maybe Panzade knows some comparative info that might help.

Aha - I really didn't know what I was looking at. Got it this time..

Thanks, both of you - learning a lot here. And that bridge is beautiful..

Did you ground build the entire roof and crane set it, Panzade?

Not a gable roof...but if it had a couple of hips, we'd build the hips on the ground and fly the whole thing up

What was the biggest single entire roof or piece you ever did or saw done?

I saw some apartments go up with like... 300 trusses, but I stayed away from that stuff. You'd get your brain fried working on a roof for a month in S Florida.

I liked to do a complex roof...run the sub-fascia and plywood and be inside in the shade in a week.