F1554 vs A307 Anchor Bolts
F1554 vs A307 Anchor Bolts
(OP)
I have searched the forums and could not find a very straight forward answer. We had designed for a 7/8" A307 anchor bolt and our customer wants to use an 3/4" F1554 bolt. In searching for the answer I would think the answer is no, they would need to be the same size because they are just about the same strenght. Is this a correct assumption?
Thanks.
Thanks.





RE: F1554 vs A307 Anchor Bolts
Regards,
Cory
Please see FAQ731-376: Eng-Tips.com Forum Policies for tips on how to make the best use of Eng-Tips Fora.
RE: F1554 vs A307 Anchor Bolts
RE: F1554 vs A307 Anchor Bolts
Regards,
Cory
Please see FAQ731-376: Eng-Tips.com Forum Policies for tips on how to make the best use of Eng-Tips Fora.
RE: F1554 vs A307 Anchor Bolts
RE: F1554 vs A307 Anchor Bolts
RE: F1554 vs A307 Anchor Bolts
elongation of the bolt is always important. If there is no elongation, there is no clamp load and thus the joint remains loose.
Ciao,
HevïGuy
www.heviitech.com
RE: F1554 vs A307 Anchor Bolts
"Always" is a very strong word. There are instances where clamping force is not an issue. Take the case of sign posts with nuts above and below the base plate. Elongation would affect deflection, but would not loosen the joint.
RE: F1554 vs A307 Anchor Bolts
Foregoing resistance to shear loading, the basic function of any threaded fastener is to develp a clamp load. Preloaded threaded fasteners act as stretched springs. Their normal tendency is to return to their unloaded length. This is the mechanism behind clamp load.
Even if clamp load "isn't an issue", when a nut is run down the inclined plane of the fastener's thread, and friction constituents of the joint are overcome, the fastener does indeed stretch (hence "elongation") -even in the aforementioned sign post example where the grip length is relatively miniscule.
Ciao,
HevïGuy
www.heviitech.com
RE: F1554 vs A307 Anchor Bolts
RE: F1554 vs A307 Anchor Bolts
Interesting. Why not simply use a dowel if it's okay for the bolt to remain loose?
Ciao,
HevïGuy
www.heviitech.com
RE: F1554 vs A307 Anchor Bolts
RE: F1554 vs A307 Anchor Bolts