A brief review is given for the notional load approach, and clauses in the codes GB 50017, Eurocode 3 and AISC 360 are introduced. A new understanding is proposed for the total story number in the current code formulae, which is reinterpreted as the story number above the story at which the notional load exerts. Such a new explanation avoids the logical defect of the traditional notional load approach. A new equation is proposed for the notional load computation.
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