aisc research program - UIUC Newmark Structural Engineering ...

Scenarios
• AISC 2005 strength with measured material properties and
no φ or Ω factors should provide the best estimate of the
test results
• If expected slip value can be reached consistently for all
connections, we may be able to:
� Verify ability to use different safety factors at “serviceability”
and “required strength” level
� Lower the Ω of 1.76 (raise the φ of 0.85) for connections in
which prevention of slip is at required strength level (i.e.,
oversized holes)
� Verify that the filler need not be developed if you design at the
required strength level (noting that we are not using standard
holes)
• If expected bolt shear value can be reached consistently for
all connections, we may be able to:
� Ensure that a new reduction formula is not needed for thick
fillers even when designing at required strength level
� Eliminate required reductions for bolt shear strength (noting
that we are not using standard holes)
MUST-SIM
University of Illinois at Urbana-Champaign
December 5, 2007