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5. Defining a new member

A. In a project linked to a solution

To define a new member in a project linked to a solution, the user must select the beams that comprise the member, using the elastic line selection tool on the linked structure model. The tool is active in the structure model view and selection starts with a mouse left click on the start node of the fist beam that will be included in the member. A green elastic line starts following the mouse cursor and the selection is completed with another left click on the end node of the last beam to be included in the member. The application detects all the beams selected with the elastic line and verifies that they define a proper member. If all conditions are met, the member is created and the application displays its data in the Member data table. By default, a member is named automatically using the convention m(count of members), but the user can edit and change that name. At the same time, in the Message area, messages are displayed to warn of missing or erroneous data for the current member.

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As various data is entered or edited, the messages are updated until the member is correctly and completely defined.

The length of a member defined on a linked structure cannot be edited, since it is computed from the structure beams that define it. However, the member section and b * Anet value, although originally copied from the structure beams data, can be changed. The member’s internal forces are read from the internal forces of the beams that define it, as they have been calculated in the linked structure solution.

B. In a stand-alone project

To create a new member in a stand-alone project, the use must click on the Add button. This will create a new member and display its data in the Member Data table. In the Message area, messages are displayed to warn of missing or erroneous data for the current member.

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As various data is entered or edited, the messages are updated until the member is correctly and completely defined.

The Divide member option is available only for members defined in a stand-alone project. This special tool provides options to insert intermediate points along a member so that additional constraints or internal forces data can be defined.

In order to solve a member in a stand-alone project, the values for internal forces/moments for each loading case must be entered for the various intermediate points along the member. This can be done in the Loading Cases page.

The steel grade can be selected according to section type, where for the typical hot-rolled sections the available grades conform to EN 10025 while for the cold-formed sections to EN 10147.

If the member section can be verified for Lateral Torsional Buckling, the option to perform that verification becomes available.

If the member section is of cold-formed type, the member can be defined as a Restrained Purlin, so that the Buckling verifications take into account the proper conditions.

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