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I need this information very much, whether ETABS can design RC columns and Beams for shears coming from Plastic hinge and Usual Vertical loads, that is Ve=Vg+V(sway) for beam..... if it can, then how can i be sure it did take this into consideration, or how can i make the program take this into consideration? Thanks. Assalamu Alaikum.

Hi Rummaan17, Great questions. This can happen. However, just to keep things simple you can size your section to make sure bending resistance is > than shear resistance. I know this answer is not very neat but I have been out of touch with this so don't exactly remember the details here. You might have to refresh me here about where does this come in play? I think the example that I have provided only talks about the period calculation, not the strength. You are right. Do you have a criteria provided by the Client company to meet? There might be details there about what load combinations to use and what checks need to be done for blast loading for strength design. Could be, but I haven't done it. You have got some excellent questions here. I wish I could answer you better but to be honest, blast loading is a complete criteria in itself. Normally a good starting point would be client specifications that you have to meet as they should specify they load cases, acceptance limit states under strength and serviceability and any other items that need to be considered. If you don't have a governing criteria, then the next best thing would be to get a book on the subject and follow a design example and establish the limit sates. Let me know. Thanks.

I will email them with latest code link of BPC-07 about the issue. let see how will they respond..

The way forward, as far as Equivalent Static load procedure is concerned, is to use the "User coefficient" option in ETABS definition of load patterns related to seismic forces. You will need to enter the value of "Base shear coefficient" as well the "Building height coefficient". The program will multiply the "Base shear coefficient" with the seismic weight, determined by the options you defined in the mass source, to generate the total seismic demand. It will use "Building height coefficient" to distribute the Base shear along the height of the building. For RS analysis, you can import user defined response spectrum.

http://www.125books.com/inc/pt4321/pt4322/pt4323/pt4324/pt4325/data_all/books/D/Design%20of%20Blast%20Resistant%20Buildings%20in%20Petrochemical%20Facilities.pdf