Member Definition - Parameters - ANSI/AWC NDS 2012

Access

• Click DesignTimber Members Design - OptionsCode parameters to open the Definitions dialog, and then click Parameters.

Dialog elements

Member Type

Enter a name for the member type, and specify if this member type is a cantilever or not.

Buckling check

Enable or disable the buckling analysis for members under compression such as columns.

Select the direction that you want to check for buckling: Axis Y or Axis Z.

Note: The program does not take buckling into account if no direction is selected.

• Effective Length ley/lez

  Opens the Effective Length le for Compression Members which allows you to select a type of timber member support.

• Load eccentricity

  Enables the verification of the active column according to section 15.4.1.

  Enter the value of the load eccentricity in the ey or ez box.

Lateral-torsional buckling check

Enable or disable the buckling analysis for members under bending such as beams.

Select the edge that you want to check for buckling: Top Edge or Bottom Edge.

Note: The program does not take buckling into account if no edge is selected.

• Effective Length let/leb

  Opens the Effective Length le for Beams between Supports which allows you to select a type of timber member support.

Factors

Contains the parameters required for the appropriate determination of adjusted factors.

• Repetitive member

  Changes the value of the repetitive member factor Cr to 1.15.

  Use this option when a member is part of a group of three or more parallel members and these members are spaced 24 inches (610 mm) or less on center.

  Note: When this option is not selected, the repetitive member factor Cr is equal to 1.0.
• Incising factor
  Applies an incising modification factor according to NDS 4.3.8 for Sawn Lumber.

  Note: When this option is not selected, the default incising factor Ci for other wood types is equal to 1.0.
• Buckling stiffness factor
• In service moisture condition

  Indicates if the wood member is subject to normal, i.e. Dry, or high, i.e. Wet, moisture conditions.

• Temperature

Service

Opens the Serviceability - Displacement Values dialog which allows you to define the limit displacements for a member.

Other...

Opens the Additional Parameters dialog which allows you to define the remaining member type parameters described in the code such as: equivalent moment factor, section parameters, etc.

Save

Adds the member type with its defined name and determined parameters to the list of previously defined steel member types.