Joist Criteria dialog
This dialog is used to select joist tables or to designate joists based on load criteria. This can be done for joists that are loaded with nonuniform loads as well as those with a single uniform load.
Dialog Controls
The joist criteria is duplicated on two tabs: one for the Default table and another for the Alternate table. When a joist is designed, the criteria on the Default tab is used unless the joist was assigned the Alternate criteria in RAM Modeler, by selecting .
| Setting | Description | ||||||||
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| Joists with Uniform Loads |
For joists loaded with a single uniform load, sizes can be selected from Standard Tables (e.g., K-series joists) or from Constant Shear Tables (e.g., KCS-series joists), or they can be assigned a Custom Label. Joists with non-uniform loads can be treated the same as those with a single uniform load by calculating an equivalent uniform load, sizes can be selected from Constant Shear Tables, or they can be given the Special Girder label XXGSP. Joists with uniformly spaced concentrated loads can be given a joist girder designation. To select joists from tables, select the Select From Standard Table option. Tolerance for Variation of Uniform Load may also be specified to allow joists that have loads that are "close enough" to uniform to be selected from the Standard Tables.
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| Joists with Nonuniform Loads |
The Equivalent Uniform Load method can be employed on joists with non-uniform loads.
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| Joist Girders |
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| Allowable Stress Ratio | If an Allowable Stress Ratio other than 1.0 is desired for joists selected from tables, type it in this field. |