Note: To create joists or joist girders, use the United States regional settings
Database Sections
On this tab, you can select a section from a database.
| Properties | Description |
|---|---|
|
Available section shapes. Click:
|
| Material | Material associated with a section. Depends on the section type. The Material list displays a list of materials from databases set for your project in the Job Preferences dialog. |
| Gamma angle | It is a rotation angle that you assign to the section of a linear element. Not available for joists and joist girders. |
| Label | Name of a section. |
| Color | Color for displaying a section. |
| Database | The list includes the databases set for your project, in the same order as in the Job Preferences dialog. |
| Family | The list displays section families. You can filter it by selecting one of the icons. |
| Section | Section from the database. |
| Parameter preview | Click the button to open the Joists dialog. There you can select a method of steel design according to the AISC code, and specify a span length. Also, you can view values of other properties. They are calculated automatically based on a selected method of steel design and a span length. |
| Max. deflection | Maximum allowable deflection of a joist or joist girder, expressed a fraction of the span. Select L/360 or L/240 from the list. |
to define a joist or a joist girder
to define a joist
to define a joist girder.
Joists Dialog
Click Parameter Preview button in the Sections dialog, on the Database tab. This dialog is available if you select the section type: Joist / Joist Girder.
| Parameters according to the code | Select the ASD or LRFD method of steel design according to the AISC code. |
| ASD | Allowable Stress Design method |
| LRFD | Load and Resistance Factor Design method |
| Span length | Select a value of joist span from the list. |
| Joist properties | You cannot edit the values of these properties. They are calculated automatically based on a selected method of steel design and a span length. |
Parametric Sections
On this tab, you can define a section by specifying section dimensions.
| Material | Material associated with a section. Depends on the section type. The Material list displays a list of materials from databases set for your project in the Job Preferences dialog. |
| Gamma angle | It is a rotation angle that you assign to the section of a linear element. Not available for joists and joist girders. |
| Label | Name of a section. You can use a standard label assigned automatically. |
| Color | Color for displaying a section. |
| Standard | Select it to define a joist by specifying the total load and live load acting on it. |
| Envelope | Select it to define a joist by specifying the max. bending moment and max. shear force. |
| Joist Girder | Select it to define a joist girder by specifying number of spaces and the max. concentrated load acting on each panel (Force P). |
| Max. deflection | Maximum allowable deflection of a joist or joist girder, expressed a fraction of the span. Select L/360 or L/240 from the list. |
| Parameters (ASD) | Some edit fields in this panel are updated after you select one of the definition options: Standard, or Envelope, or Joist Girder. Apart from parameters specific to the definition option, enter: length, weight, and height of a joist or joist girder. |
| IY | Moment of inertia. Deselect the check box to specify the moment of inertia. If you select the check box, the edit filed is inactive. |