In seismic code, the formula to calculate horizontal force due to each mode contains only Modal participation factor term but it doesn't have Mass Participation factor term in it. Why is it so?
Seyed Amin Mousavi
Modal and mass participation factors are highly correlated. That is the higher the cumulative participation factor, the higher the cumulative mass participation. Meanwhile many codes, such as ASCE 7, define the minimum No. of modes based on the mass participation.
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Avinash Rai
Iolanda-Gabriela Craifaleanu Could sent to me your file that you attached above? Thanks.
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Mati Ullah
can any one explain difference between modal participation ratio and modal participation factor ?.thanks in advance
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