Bolted Connection is or is not a moment resisting connection?
Bolted Connection is or is not a moment resisting connection?
(OP)
Thank you for your time. Please bear with my lack of knowledge on structures; I just separated from the military after 10 yrs flying helos and haven't had to use my CE degree till now with my new company. I am in the process of designing/estimating a shelving system to be used in an automated retrival system. I am attempting to make this system a bolt together vice welded since it would save about $80,000 in materials and shipping. However, my boss think that we will have to make it a welded system. I disagree with her. Our point of contention is the connection of the horizontal shelves to the vertical uprights. I contend that if we use 2 or 4 bolts in the equal leg structural angle horizontal beam/stringer and connect it to the vertical equal leg, then it becomes a moment resisting connection; she says "not necessarily" and tells me that it is a pinned connection. If I have the bolts separated by 90 deg so that they will bolt into both legs of the angle, how can such a connection not resist a moment? Our loads are light--370# distrubted over a span of 54" and seismic forces are nil. Any help, flames, comments, sneers, or jest is greatly appreciated. Thank you for your time.
In search of my next cold one,
NearBeer
In search of my next cold one,
NearBeer





RE: Bolted Connection is or is not a moment resisting connection?
Another approach would be to weld an end plate on your shelf and design a bolted end plate moment connection.
RE: Bolted Connection is or is not a moment resisting connection?
RE: Bolted Connection is or is not a moment resisting connection?
Still haven't found my cold one,
NearBeer
RE: Bolted Connection is or is not a moment resisting connection?
Good luck.
RE: Bolted Connection is or is not a moment resisting connection?
The critical thing is the fasteners used...
Dik
RE: Bolted Connection is or is not a moment resisting connection?
Mixing Welds and Bolts, Part 1
http://www.jflf.org/pdfs/papers/design_file201.pdf
Mixing Welds and Bolts, Part 2
http://www.jflf.org/pdfs/papers/design_file202.pdf
hope this help
S.
Corrosion Prevention & Corrosion Control