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RE: Cyclic loading and A490 bolts

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Laura,

A-490 bolts are restricted for tensile fatigue (AISC 9th Edition, p. 5-107),
but I am not aware of any limitations for shear fatigue provided the bolts
are installed and tensioned as required by the "Specification for Structural
Joints Using ASTM A325 or A490 Bolts".

Regards,
Harold Sprague


> -----Original Message-----
> From:	LAURA K. KANNADY [SMTP:LKANNADY(--nospam--at)MARTINMARTIN.COM]
> Sent:	Wednesday, May 24, 2000 9:22 AM
> To:	'seaint(--nospam--at)seaint.org'
> Subject:	Cyclic loading and A490 bolts
> 
> Can A490 bolts be used to resist shear loads in a cyclic application, such
> as for a tower crane?  Can anyone direct me towards an appropriate
> bulletin
> or reference?
> 
> Thanks in advance,
> 
> Laura Kannady, P.E.
> Project Engineer
> 
>