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SUMMARY:Summary and Background to the 2004 Canadian Shear Design Provision
 s for Structural Concrete Members - Evan C. Bentz
DTSTART:20070524T140000Z
DTEND:20070524T150000Z
UID:TALK7075@talks.cam.ac.uk
CONTACT:Nami Norman
DESCRIPTION:In the design of reinforced concrete members\, the concrete ge
 ometry and amount of reinforcement provided must be selected such that the
  externally applied shear force\, axial force\, and moment can be safely r
 esisted.  For flexure and axial loads\, there is essentially universal una
 nimity on the “plane sections” rule while for shear\, there is no glob
 al consensus on how shear is carried or what a safe set of shear provision
 s should look like.  \n	Through the testing of large-scale experiments and
  the application of the Modified Compression Field Theory (MCFT)\, it has 
 been possible to develop rational and general shear design methods in Cana
 da over the past 30 years.  These provisions were sometimes criticized as 
 being too complex for day-to-day use in building design\, however.  The 20
 04 Canadian design provisions for shear and torsion represent a breakthrou
 gh in ease-of-use while still maintaining the generality of being derived 
 from a theoretical basis.  As an example of the generality\, the provision
 s for as derived for steel reinforced members provide conservative results
  when compared to FRP reinforced members as well.  In this presentation\, 
 the theoretical background to the new CSA provisions will be explained\, c
 omparisons to experiments will be made\, and implications to design will a
 lso be explored.  \nIt is hoped that these new shear provisions will help 
 in the development of a consensus towards a new general\, international sh
 ear design model.  This may allow the confidence engineers currently feel 
 about flexural behaviour to apply to shear behaviour as well.\n\n
LOCATION:Engineering Department - ***LR5***
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