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D. Designing longitudinal and shear reinforcement in beams per IS13920

  1. In the IS456 Beam Design Brief dialog General tab, set the Check for IS13920 option.
  2. Perform a beam design.
  3. Select the Earthquake page.
  4. Select the appropriate load case is selected to perform the seismic checks to allow for a strong column-weak beam mechanism. The program internally calculates the moment capacities of the beams and columns framing into a joint and assign a ‘pass/fail’ status depending on the corresponding beam and column capacities at that joint for the direction under consideration. If the sum of the column capacities is greater than the sum of the beam capacities in a particular direction, the program will assign a ‘pass’ status. If on the other hand, the sum of the column capacities is greater than the beam capacities, the program will assign a ‘fail’ status. The program will also check for the shear reinforcement capacities and shear link spacings in the “critical zones” as defined in IS13920.
  5. Select the Earthquake | Reinforcement page to review the status of the IS 13920 design.