Use this dialog to define the parameters of thin-walled steel members for the Eurocode 3.
Access
- Click Thin-walled in the Member Definition - Parameters dialog.
Dialog elements
- Type of forming
- Evaluates the average material resistance of the section f
ya
according to section 3.2.2.(3) of the code.
- Purlins stiffened with profiles sheets into account
- Analyzes purlins braced with a diaphragm of profiled sheets as specified in 10.1.
Note: Select this option to access the parameters of profiled sheeting.
- Positioning of sheeting
- Determines how the sheeting is supported on purlins.
- The sheet can be supported on the purlin by the shorter corrugation, or by the longer one (Table 10.3)
- Sheet fastened through
- Specifies how the sheet is fastened to the purlin.
- Tthe list contains two items: trough and crest (Table 10.3)
- Pitch of fasteners
- Specifies the spacing of fasteners between the sheet and the purlin.
- The list contains two items: every corrugation (e = b
r
) and every other corrugation (e = 2b
r
) (Table 10.3).
- Model for calculating
- Determines the torsional stiffness of the trapezoidal sheet.
- The list contains two items (as specified in section 10.1.5.2.(3) and Figure 10.7): Model 1 and Model 2.
- Positioning of purlins
- Defines the position of the purlin in the analyzed sheeting structure.
- The list contains two items: End purlin and Mid-purlin (point 10.1.5.2.(3))
- Fastener axis - web distance
- Specifies the distance between the fastener axis and the web.
- This parameter is used in section 10.1.5.1(4) of the code to determine the stiffness K of the roof sheeting made of the trapezoidal sheet.
- Spacing of the purlins
- Determines the stiffness C,
D,C
of the roof sheeting made of the trapezoidal sheet.
- This value is used in section 10.1.5.2(4) of the code.
- New sheeting
- Opens the Corrugated Sheetings dialog which allows you to create, edit, or delete a sheeting.