Combination object contains load cases that depicts extreme force effects according to limit states. Each load case is contained in a CombinationItem object with its specified load factor.
<O T="Combination">
<O T="CombinationItem">
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</O>
<O T="CombinationItem">
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</O>
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</O>
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<O N="Service I" T="Combination">
<O T="CombinationItem" Case="@DeadLoad|AnalysisCase" Factor="1">
<O T="CombinationItem" Case="@LiveLoad|AnalysisCase" Factor="1">
<O T="CombinationItem" Case="@WindLoad|AnalysisCase" Factor="0.3">
</O>
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