Effective Length for Beams between Supports - ANSI/AWC NDS

Use this dialog to define the lateral-buckling effective length of members.

Access

• Click Effective length let or Effective length leb in the Member Definitions - Parameters dialog.

Dialog elements

Define your own buckling length coefficient by selecting the appropriate value for one of the available buckling modes.

Note: The elements available in this dialog are different depending if the member is a cantilever or not.

Buckling modes for non-cantilever members

	Uniformly distributed load.
	Concentrated load at center with no intermediate lateral support.
	x equal concentrated load at 1/x points with lateral support at 1/x points.
	Equal end moments.
	Other single span bending members.
	User defined length.
	Lateral bracings.

Buckling modes for Cantilevers

	Uniformly distributed load.
	Concentrated load at unsupported end.
	Other cantilever bending members
	User defined length.
	Lateral bracings.

Note: To set up lateral bracings, select le = (le1, le2, ...), and then click Lateral Bracings to open the Internal bracings dialog.