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Saturday, June 18, 2016

Girder Design In Accordance with Earthquake Provision

For a SMRF(special moment resisting frame) system, the earthquake lateral force is primarily resisted by girders and columns. Thus, they must be designed in consideration of earthquake provision in the code.

If you are new to earthquake code per ACI or NSCP, this spreadsheet has Notes beside the formulas to let you know what section it is located in the code. Thus, this helps in guiding you what important provision is really used in the code and you avoid reading too much unnecessary provisions.

Again, green values are linked from the Design Criteria tab. You just need to input(red fonts) the STAAD member forces and this spreadsheet will give you:

  • required top and bottom bars
  • hoops spacing from shear forces
  • stiffener requirement
  • and verification of section of beam assumed

Monday, January 18, 2016

Seismic Isolation for Designers and Structural Engineers

For an earthquake prone country, designing of buildings are approached using structurally advanced technology. One of these is seismic isolation. This book "Seismic Isolation for Designers and Structural Engineers" provides both theory and design aspects of seismic isolation.


Mr. Kelly has over thirty years professional experience in the design and analysis of a variety
of structures, with particular emphasis on the non-linear response of structures to seismic
loading, the earthquake evaluation of existing buildings and the application of base isolation
and energy dissipation techniques to a variety of structural types.


Japan which is also an earthquake prone country uses this technology and they were able to resist several earthquakes in the past. Truly, this book is a good reference.

Wednesday, January 6, 2016