I understand that it isn't optimal and I am seeing that I'll have to look into localized bearing stress more but from the point of the shackle how it is any different then if it was hooked into a crane block hook, there the shackle is bearing on what is essentially a round piece of steel and...
I am not permitted to explain much more about it per the client but a single lug will not work in this situation, the ears of the lugs also cannot be moved closed together, the shackle supplied that will be connected to the piece is specified for the piece and is a 50 ton capacity. The pin of...
Winelandy, the lugs are spaced 4" inside to inside as I stated with the pin passing through both (the pin is 12" long with the last 2 inches on each end threaded and a nut is applied once it is inserted to keep it in position, but the threads are not in the bearing plane.) A shackle supplied...
Hi, I am currently analyzing a lug and pin combination that is to be used in lifting an 80K load. I am analyzing them using ASME BTH-1 and using Design and Construction of lifting beams by Ricker as a guide. Since this is a controlled lift and all the loads are known and will be moved delicately...
Haha sorry jayrod u beat me to it about the Hyatt. But yeah no matter what we were going to go with an 8x8x2" thick plate on the HSS8x8 as a minimum, and a 10x10x2" thick plate on the HSS10x10 as a minimum no matter what any calcs told us(bigger is always better and we don't like to be on the...
Yes you are correct that nut pull through was the failure mechanism for the Hyatt. The hanger rod was supposed to support two floors with one nut holding the each suspended floor, but the detail was changed and the nut was holding both floors (twice as much as intended). This cause the nut to...
Ok so I have a very unique problem and would like some insight on how to go about it. We are currently creating a spreader that has to be capable of pivoting about its center. It will only be holding the load for a brief period and is not a permanent install. It will have to spread a 3' span in...
