Nick Mueller wrote:
Ned Simmons wrote:


Certainly at that time friction
type connections were more common, but after looking around the web a
bit, I'm not sure that's true anymore.


There do exist bolts for both. Those for shearing do have a tighter
tolerance on their shaft and the two mating bores have to be drilled in
place while erecting the building (- architectural).

Here's a link (in German), but you also get the pictu
http://www.wuerth.de/de/service/dino/07schrauben-stahlbau.html

Interesting enough, shearing (called SL) is not allowed with dynamically
loaded constructions (cranes, bridges etc). They work with friction (called
HV) and have to be precisely torqued (including rules how to regularly
check the torque and the number of samples measured).

That makes sense. If bolts are loaded in shear and the load reverses,
the bolts will pretty quickly come loose.

Best wishes,

Chris