Inputs
Choose a Nepal location to auto-fill Z, or select Custom Z for manual entry.
kt (from structure type)
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Used in T1 = 1.25·kt·h^0.75
Period, T1 (s)
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T1 = 1.25·kt·h^0.75
Ru, Ωu, Ωs
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From building system dropdown.
Spectrum Region
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Based on Ta, Tc and T1.
Response spectrum shape (Ch vs T, 0–6s). Dot shows your T1.
Ta/Tc/α/K from soil & method, then Ch(T), then C(T)=Ch·Z·I, then Cdu/Cds.