Subsection 220.127.116.11.1, equation 12.14-9 specifies that Emh = 2.5*Qe. My question is when to use the 2.5 factor and when not to. The Code is unclear. I am designing anchorage forces for a vertical rigid steel storage tank and I use equation 15.4-5 to calculate the lateral seismic force, V, when the period is less than 0.06 seconds Is this force V the same as Qe? And do I apply the 2.5 factor to this V or Qe?
Thanks for you assistance.
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