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APIgetFirstMode Method

Get from results or estimate the fundamental period of the structure. If no results are available, relationship as per EC8 4.6 is used.
REST path: /res/firstmode/[ct]/[direction]
REST verb: GET

Namespace: NextFEMapi
Assembly: NextFEMapi (in NextFEMapi.dll) Version: 2.6.2.1 (2.6.2.1)
Syntax
public double getFirstMode(
	double ct = 0.05,
	byte direction = 0
)

Parameters

ct  Double  (Optional)
Optional, default 0.05. Coefficient for estimation of fundamental period from EC8 4.6: T1=ct*H^(3/4)
direction  Byte  (Optional)
Optional, default 0 (no specific direction). Direction of the seismic action to get proper period

Return Value

Double
The first period of the model
See Also