The Property Name edit box, the Modify/Show Notes button, the Section Shape drop-down list and the Section Property Source display area function as described in the Frame Section Property Data Form topic. The areas of the Frame Section Property Data form unique to a Section Shape - Joist Section are described below:
Joist Design Type options. Select between the following design types. The options available on the form depend on which option is selected.
Standard (K Series). Specify the K-, LH- and DLH-Series joist capacities by entering values for total load capacities and live load capacities that produce an L/360 deflection specified for a range of joist spans. The moment of inertia is used only when displaying the deflection diagram that is available when performing Interactive Steel Joist Design. Enter these values by span length using the spreadsheet area in the lower left-hand corner of the form.
When the spreadsheet is displayed, used the Copy Current Row and Paste Append button to speed data entry by clicking on a row and then this button to add a copy of the row to the end of the spreadsheet. The Sort By Span Length button can then be used to arrange the data in ascending order.
Envelope (KCS Series). Specify the Joist Capacity Data (Envelope) by entering values for moment capacity, shear capacity, and minimum and maximum span lengths for the joist.
Joist Parameters edit boxes. Provide the joist depth, unit weight, and moment of inertia used for the analysis model. The moment of inertia term ( Analysis I33) is used in the analysis model. It is also used to calculate the joist deflection.
Access the Frame Section Property Data form for a Joist Section as follows:
Click the Define menu > Section Properties > Frame Sections command to display the Frame Properties form. Then do one of the following:
Click the Add New Property button to display the Frame Property Shape Type form, select Joist Section from the Section Shape drop-down list, and click the OK button (or double click the Joist Section shape).
Highlight a previously defined joist section definition and click the Add Copy of Property or the Modify/Show button.