Prequalified Bolted Moment Connection
Prequalified Bolted Moment Connection
(OP)
I am analyzing an existing "moment" frame that penetrates a wood roof structure to an equipment platform above and the designer used HSS columns and W shape beams. He shows a bolted moment connewction of the W shape to the HSS column.
Are there any pre-qualified bolted connections for this type of connection? It was done in 2005 under the 2003 IBC. A325-N bolts. The designer used 1" plate on the beam side thru-bolted through the HSS with no backing plate and it has me concerned as to the pull through aspect of the tensioned bolt thru the HSS section.
Are there any pre-qualified bolted connections for this type of connection? It was done in 2005 under the 2003 IBC. A325-N bolts. The designer used 1" plate on the beam side thru-bolted through the HSS with no backing plate and it has me concerned as to the pull through aspect of the tensioned bolt thru the HSS section.
Mike McCann
MMC Engineering
http://mmcengineering.tripod.com






RE: Prequalified Bolted Moment Connection
http://www.conxtech.com/
RE: Prequalified Bolted Moment Connection
I also checked the HSS and the section used, an HSS6X6X.5 does satisfy local buckling requirements (Table 1-4b).
Mike McCann
MMC Engineering
http://mmcengineering.tripod.com
RE: Prequalified Bolted Moment Connection
In the post-Northridge worlds, I saw a company use the stringent (i.e. SMF) detailing provisions, but with a reduced R = 3.0. That was just so that the buidling official would let them use a non-prequalified connection for their project. That was in the 1997 UBC days when no one really knew what to use for their moment connections....
RE: Prequalified Bolted Moment Connection
www.FerrellEngineering.com
RE: Prequalified Bolted Moment Connection
Mike McCann
MMC Engineering
http://mmcengineering.tripod.com
RE: Prequalified Bolted Moment Connection
www.FerrellEngineering.com