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PACO Steel and Engineering Corp. has developed a state-of-the-art
pre-engineered, pre-fabricated and cost-effective Special Moment Frame to
resist both lateral and gravity loads. Special Moment Frames allow the
architect to design large clear openings and provides the Engineer of
Record a frame capable of maintaining structural integrity.
Using PACO Steel's lightweight sections, for the SMF, the installation is fast,
performed by the standard framing crew (no welders), fits into standard 2x4
or 2x6 wood walls and is less expensive than site-built wide flange moment
frames. PACO Moment Frames are compatible with wood, LGS or heavy
structural framing systems.
PACO will provide the EOR, calculations, submittal documents and detail
drawings for the moment frames and their attachments to the foundation.
This will reduce design time for the engineer and provide a cost-effective
solution for large clear span openings.
PACO unstiffened extended end plate connection has an end plate that
extends beyond the outside of the connecting PACO beam flanges. The
end-plate is shop-welded to the end of a PACO beam and is then field-bolted
to a PACO column flange with four rows of high-strength bolts using a total
of 8 bolts.
The excellent inelastic response capacities of the PACO SMF beam-column
connections have been validated through numerous tests conducted at
Virginia Polytechnic Institute and State University (VirginiaTech) utilizing the
testing protocol per Appendix S of 2005 AISC Seismic Provision.
Test results for the PACO SMF beam-column connection configuration
indicate that the connection is capable of sustaining an interstory drift angle
of more than 0.04 radians, exceeding code requirements.
The measured flexural resistance of the connection, determined at the
column face, was greater than 0.80 Mp, where Mp=(1.1 Ry Zx Fy), of the
connected PACO beam at the interstory drift angle of 0.04 radians.
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