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Common Parameters Created Edited

Member Assignment


  • When a member is divided into several line elements (beam elements or truss elements) during modeling, these elements can be designated and designed as single members.
  • If a member is modeled by splitting into several line elements, design and strength verification after specifying a member can output results for a single member regardless of the number of divided elements.
  • For members designated as "members", design variables can be set to be automatically calculated in the program, making it easier to set design variables during automatic design.



From the main menu, select [Rating] tab > [Type : Steel Bridge] > [Rating Input Data] group > [Rating Parameters] > [Member Assignment]



Select the corresponding elements to be assigned as a member, and enter the following


Rating-Common Parameters-member assignment.png

Member Assignmet dialog box


Select the ability to enter/modify or delete an members.

Add/Replace : A new Member can be defined or an existing Member can be revised.

Delete : Assigned members can be deleted. You may either select the Members to be deleted from the model window or the Element List window.


Allow Single Element Member : Check on to permit a single element to be assigned as a member.  

Assign Type

Manual : The User defines Members directly.

Automatic : The program defines Members automatically.

Selection Type

All : All is selected if all the elements are to be assigned Members. This becomes activated if Automatic is selected in Assign Type.

NOTE.png Enabled only when Automatic in Assign Type.<></>

By Selection : A Member is assigned to selected elements.

NOTE.png If multiple elements are designated as a single member, the member number is designated as the element number in the I-terminal of the Local Direction among the elements that make up the member and that element becomes the representative element of the member. The design variables of the member are applied only when entered into the representative element.<></>
If the material, cross section, and local direction of the elements to be designated as members are different, they cannot be designated as one member.
When a member divided into multiple elements is designated as one member and the function of automatically calculating design variables is applied, the design variables Effective Length Factor (K), Equivalent Moment correction Factor (Cm), and Unbraced Length (L, Lb) are automatically calculated in consideration of the connection status of the member inside the program. Therefore, accurate design results can be obtained.
Among the design variables, the Effective Length Factor (K), Equivalent Moment Correction Factor (Cm), Moment Magnifier (B1/δb, B2/δs), and Limiting Slenderness Ratio apply the values input to the representative elements, and the Unbraced Length (L, Lb) uses the values input to each element.

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