Tolerance
Tolerance
(OP)
U R G E N T
Please help me, we installed 16 bolts anchored to a concrete structure that will support a 17 tons tank, and no one noticed the bolts came with a smaller diameter, it was supposed to be 1 1/4" each and they actually are 1 1/8", I need to know where to find the tolerance for this dimension and I don“t have the time to buy the required standar. We are talking about 16 bolts.
Thank you





RE: Tolerance
If the bolts were for shear, then, again, review the calculations.
Actually there isn't a tolerance for this kind of situation. It's check the calcs and see it they still work. What would be ideal, is that he overdesigned the bolts.
If you are a contractor, don't take the responsibity of accepting these bolts.
RE: Tolerance
RE: Tolerance
there is a very very small plus/minus on diameter which would depend on thread grade but I can assure you the tolerance is nowhere near 1/8".
threaded fasteners are generally made to pretty precise tolerances, nut threads would certainly never fit otherwise.
the question as to whether the smaller bolts are suitable for your application can only be answered by the engineer of record.
RE: Tolerance
We were just told the security factor was large enough! we are covered. Thks again
RE: Tolerance
1-1/8"-8UN = 0.728in^2
1-1/4"-8UN = 0.929in^2
so you're ~ 78%of the original strength
RE: Tolerance
If one thing was wrong ...
RE: Tolerance
RE: Tolerance
RE: Tolerance