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RE: Grade 5 bolts[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: "'seaint(--nospam--at)seaint.org'" <seaint(--nospam--at)seaint.org>
- Subject: RE: Grade 5 bolts
- From: Ed Marshall <elmarshall(--nospam--at)HASimons.com>
- Date: Mon, 21 Sep 1998 13:51:59 -0700
There was a discussion in May about this. Check in the Email archive under "Correlation of structural fasteners." Ed Marshall, PE > -----Original Message----- > From: AnandNene(--nospam--at)aol.com [SMTP:AnandNene(--nospam--at)aol.com] > Sent: Monday, September 21, 1998 4:22 PM > To: seaint(--nospam--at)seaint.org > Subject: Grade 5 bolts > > Can someone comment on use of Grade 5 (ASME/ANSI B18.2.1) bolts in > place of > A325 bolts? I am talking about 1/2" and 5/8" dia bolts used for > design of > small steel frames which house equipment. The design is based on use > of 1/2' > diameter A325 bolts for a frame that is designed for UBC seismic zone > 4. > Published strength of Grade 5 bolts is Fu=120,000 psi which is same as > Fu for > A325 bolts. My concern is that small size bolts are typically zinc > plated and > therefore may not be suitable for structural application. My initial > response > is not to use Grade 5 bolts. However, I would like your opinion. Is > it o.k. > to use if there is no zinc plating (as for larger diameter Grade 5 > bolts)? > > Thanks. > > Anand Nene, S. E. > >
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