| Applies To | |||
| Product(s): | RAM Connection | ||
| Version(s): | Any | ||
| Environment: | N/A | ||
| Area: | N/A | ||
| Subarea: | |||
| Original Author: | Bentley Technical Support Group | ||
How can I manually define the gusset plate dimensions?
1. Edit the connection to open the Connection Pad.
2. In the Connection Pad, change "Dimensions Calculation" in the General Information box from Automatic to Manual.
3. In the Connection Pad, scroll to the Interfaces box and select a brace interface (Upper Right Brace, Upper Left Brace, Lower Right Brace, or Lower Left Brace). Then, enter the desired dimension for "LV" Length on Column" and "LH: Length on Beam." See screen capture below. If the connection includes all four interfaces, the gusset dimensions need to be manually defined for each interface separately.
4. After defining the manual dimensions, it is likely that the connection geometry will require moment on the connection interfaces for force equilibrium. In the General Information box, choose set "Moment Provided By" to either Beam or "Column to allow for moment on the beam or column interface. If Beam is selected, moment will be transmitted through the gusset-to-beam interface. If Column is selected, moment will be transmitted through the gusset-to-column interface.
5. When "Moment Provided By" is set to Beam or Column, an additional vertical force can be defined to reduce shear on the gusset-to-beam interface. The additional force is arbitrary and defined in the Members box for the appropriate brace (Upper Right Brace, Upper Left Brace, Lower Right Brace, or Lower Left Brace). If the additional vertical force is set equal to Vb, then the none of the vertical component of the brace force is transmitted to the beam. This matches the discussion for "Special Case 2: Minimizing Shear in the Beam-Column Connection" for the Uniform Force Method Section of the AISC Steel Construction Manual (page 13-3 in the 13th Edition). If the additional force is set to 0, then the shear on the gusset-to-beam interface will not be reduced.
Can I design a Gusset Connection using a Pipe Column?
No, currently in Column-Beam-Brace joints (CBB) only Wide flange (W) and Square or Rectangular Tube (HSS-rect) shaped sections can be used for columns. Circular shapes can be used for braces and as columns in some joints, but not the gusset type. A change request for pipe columns in these joints has been logged.
See Also
Troubleshooting Errors when Assigning Connections
Structural Product TechNotes And FAQs
External Links
Bentley Technical Support KnowledgeBase
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