RAM Connection Capabilities and Modeling FAQ

Can I assign a section such as a HSS or channel to a beam?

Currently, only I-shaped sections can be assigned to beams in RAM Connection. It is not possible to assign other section types, like HSS or channels, to beam members.

What is the difference between Basic Connections and Smart Connections?

The RAM Connection Manual defines these connections as follows:

Basic Connection:  A connection template that can automatically adjust the geometry (position or dimensions) of the connection pieces to fit the connection members. It does not calculate the quantity or dimensions of the connecting pieces (bolts, plates, etc) to resist the applied forces.

Smart Connection: A connection template that can automatically calculate the quantity and dimensions of the connecting pieces (bolts, welds, plate sizes etc) to resist the applied forces.

When basic connections are designed, the program searches through a list of predefined connection templates and selects the first connection in the list that satisfies the design requirements.

When smart connections are designed, the program optimizes the connection parameters. See the RAM Connection Manual for a list of parameters that are optimized for each connection type. If a parameter is not optimized, the program uses a default value that be modified in the Connection Pad as needed.

Where are the abbreviations used for joint types and connections defined?

The abbreviations are defined in the RAM Connection Manual. In the v8.0 Manual, the naming conventions for both joints and connections are listed on page 42 and 43.

How can I change the design code (AISC 360 or BS 5950) or the design method (ASD or LRFD)?

In RAM Connection Standalone:

1. Click on the Design menu tab at the top of the program window.
2. Find the Assignment toolbar.
3. Double click on the small square box with arrow pointing to the lower right corner to open the Customize Connection Design dialog.
4. Edit the design code or design method.

In RAM Connection for RAM Structural System:

1. Click on the Design menu tab at the top of the program window.
2. Find the Assignment toolbar.
3. Double click on the small square box with arrow pointing to the lower right corner to open the Customize Connection Design dialog.
4. Edit the design code or design method.

In RAM Connection for Elements:

The design code and design method is controlled by the code selected for design when performing a design in the RAM Elements model. To change the design code or design method, redesign the model and choose the desired design code.

Changing the design code will not automatically update generated load combinations. After changing the design method, delete and regenerate the load combinations.

When designing a base plate connection, the ACI 318 Appendix D checks are not completed.

Since the ACI Appendix D checks are based on ultimate limit state design, RAM Connection will only complete the ACI Appendix D checks if LRFD is selected for the design method. See frequently asked question above for information on changing the design method.

Information that is modified in the Connection Pad is not saved after clicking the Save button and exiting the dialog.

Any item that has an icon with a red arrow to the left of it (see figure below) is defined in a dialog outside the Connection Pad. These parameters can be edited in the Connection Pad, but the information will be lost after closing the dialog. To change the parameters permanently, modify the values in the dialog where the information is initially defined. Edit the Joint to modify loads, section, materials, etc. Edit the seismic provision options in the Customize Connection design dialog.

The Results Report identifies the controlling load condition as a load case. The design should be based on load combinations and not individual load cases.

RAM Connections completes a design check for all load conditions, including individual load cases and load combinations. For some connection types, such as a base plate connection with wind uplift, the design for an individual load case may control the design. The load cases can be removed as follows:

In RAM Connection Standalone:

1. Enter the Connection Pad by either double-clicking the large 3D display of the connection or clicking on the Design menu tab – Connections toolbar – Edit.
2. In the Connection Pad, click on <Loads> to open the Loads worksheet.
3. Click on the Load # associated with the load case and then click on the Delete button on the keyboard to delete it from the worksheet.

Please note that this will not permanently delete the load case results from the worksheet. See frequently asked question above for details.

In RAM Connection for RAM Structural System:

1. Enter the Customize Connection Design dialog by clicking on the Design menu tab – Assignment toolbar – Small square box in lower right corner of the toolbar.
2. Click on the “Select All Load Combinations” button to only select the load combinations.

In RAM Connection for Elements:

1. Enter the Connection Pad by either double-clicking the connection box at the joint where the connection is assigned or clicking on the Modules menu tab – Connections toolbar – Edit.
2. In the Connection Pad, click on <Loads> to open the Loads worksheet.
3. Click on the Load # associated with the load case and then click on the Delete button on the keyboard to delete it from the worksheet.
4. If a second-order analysis was done in RAM Elements, you can bypass Steps 1-3 by unselecting the individual load cases when analyzing the model in the main program.

See Also

Product TechNotes and FAQs

Structural Product TechNotes And FAQs

External Links

Bentley Technical Support KnowledgeBase

Bentley LEARN Server

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