slotted holes
slotted holes
(OP)
can someone please check if my wording is correct for slotted holes, and feel free to revise it:
Bolting shall be snug tightened (do not torque). Burr threads after nut is in place to prevent back-off.
Bolting shall be snug tightened (do not torque). Burr threads after nut is in place to prevent back-off.






RE: slotted holes
RE: slotted holes
Civilperson is correct.
RE: slotted holes
why not lock-nuts, or double nutting, or even lock-tite ?
maybe witness marks ??
RE: slotted holes
RE: slotted holes
RE: slotted holes
I'm not sure why some of you guys are claiming his design is suspect. There is certainly no reason to suggest this. There are many cases where you want snug tight in slotted holes, both perpendicular and parallel loading. Given that he has not described his loading and intended restraint conditions, I think you have done a disservice to the OP by questioning his design ability. Rather than make a negative statement, why not ask what is the intended use? And then add constructive criticism if required.
RE: slotted holes
I wasn't trying to say his design was "suspect". I was meaning civilperson is correct in that you want the slots perpendicular to the loading.
In civilperson's defense, newbie is trying to figure out a lot of things when it comes to understanding structures. I'm sure he was trying to keep him on course.
Newbie:
NEVER EVER EVER, use floor grating to account for LTB bracing of a beam. Right now, as a new engineer, you're okay asking that question. Now you know.
RE: slotted holes
Again, I apologize.
RE: slotted holes
What is the use of snug tight in slotted holes with parallel loading?
RE: slotted holes
RE: slotted holes
I don't think there are any valid applications for a snug tight bolt in a slotted hole with load parallel to the slot. There is no capacity for this connection, since the bolt is not fully torqued.
RE: slotted holes
I say to damage threads.
RE: slotted holes
RE: slotted holes
no need to suspect my design.. structureEIT is correct.. am using it for expansion.. as far as perpendicular to the load, shear capacity of bolt, plate bearing, etc is ok..
thanks for all your replies..
RE: slotted holes
RE: slotted holes
It is still standing as far as I know.
RE: slotted holes
Ok, maybe I should clarify myself. In my example, i was not trying to resist a load parallel to the slots. I was using it as an example, as others mentioned, of a case where the slot in snug condition could be used to relieve a connection of undesired loads in one direction, without it necessarily being a true sliding joint. If I wanted a true sliding joint, I would use double nuts, with connection only "finger tight" and UHMW plastic low friction bearing pads, etc....