Browse By Tags

Hello, I have a single-story roof with a high roof. At the location of the high roof, the wind load should be applied at the high roof and the girts. However, the generated wind load only applies load to diaphragms, so wind load is applied at the…

Hello, I am currently working on a multi-phase building design, so I have two separate models, however, there are columns that will be located on the same footing at the expansion joint. Due to this condition, I am looking to design a combined footing…

Hello, I have been working in a RAM SS building model for some time and it has been running without any problems. Yesterday, I shifted a grid that has braced frames on it. After that shift, RAM has been omitting my lateral load cases in the "x" direction…

ASSIGMENT-6.std ON RUNNING THIS ERROR COME ,,PLEASE GIVE ME SOLUTION TO RESOLVE THIS , I HAVE TRY ALL THE METHOD GIVEN PREVIOUSLY

I have a model where I have modeled in some faux rooftop elements for exposure (domes and spire bases, spire loads input as nodal loads on the spire bases from another model). I am getting an excessive P-Delta deformation error for Story 6.33 ft Spire…

I am analyzing this braced frame structure with the effective length method following this procedure https://communities.bentley.com/products/ram-staad/w/structural_analysis_and_design__wiki/55456/asce-7-aisc-360-and-the-effective-length-method-in-the…

For some reason, RAM Frame is not reporting the unbalanced brace loads in the Seismic Provisions > OCBF-V beam output. Is this a software bug or did I miss a setting somewhere?

I have rigid diaphragms at each level with 8 moment frame beam lines in the Y direction and 4 moment frame beam lines in the X direction. I have Loads and Applied Forces report that shows the diaphragm forces at each level. What is the best way to extract…

Hi, When I am running RAM frame for Tilt up building, and the analysis does not converge because of too low of crack factor, the error window points to a wrong panel. Is there a better way to troubleshoot which panel is giving me an error?

Hi all, I am working with an industrial structure with Pseudo flexible diaphragm. I observed an unusual displacement at couple of places in the diaphragm due to nodal loads (RAM generated nodal loads). I tried disconnecting that node from diaphragm…

How can i see or find the local axis of concrete walls? I see wall forces but need to know major axis direction.

Hi, Based on NBCC 2015 4.1.8.11 4) single storey buildings with steel or wood deck as diaphragms can have a higher fundamental period compared to 4.1.8.11 3) as seen in the snap below. However, in the current RAM frame the Ta is only based on clause…

When analyzing a structure in RAM Frame, do the drift results calculated use the ultimate or the service wind load? Also in RAM Frame, do the seismic drift results calculated use an elastic analysis or is the design ratio calculated by multiplying by…

We have created a RAM model from an ISM export from Revit. After cleaning up a multitude of errors associated with the import, we got the model into RAM Frame to analyze for wind loading. When running the model under dead, live, and a user input wind…

I'm getting some conflicting graphical information and output. I'm designing a special concentrically braced frame (SCBF) with wide flange beams and columns and HSS braces. The frame column webs are oriented in the plane of the frame and all beam and…

Hi, I have a RAM Structural model which is giving me instability error at node at the top of the column. I initially had them all as walls and ran into the instability at node error at the node generated by the program after meshing. Assuming that the…

When cutting sections through the diaphragm - it appears that only the resultants for load cases are reported, and not for the custom load combinations. Am I missing something, or is this functioning as anticipated? If so, I request the function be updated…

As shown in the image above, a project we have has steel beams connected to concrete columns. Based on geometry alone there should be a moment applied to the column during design in the Concrete module. Added to this, the red beam on the left has a gravity…

I am using RAM SS Advanced Analysis to design a 1-story Tilt-Up building with gabled roof using semirigid diaphragm. I am getting instabilities and I cannot make it to go away. I have tried many solutions offered throughout bentley website such as below…

I am modeling/analyzing Tilt Up Walls, in RAM structural systems and was wondering a few things: - How do you capture the parapet? I understand you can put wind loads in RAM frame for the parapet, but when designing, you can't design the parapet portion…

I have a concrete building with roof at different level acting as a rigid diaphragm. I am getting less building weight (7000kips) in RAM frame compared (10000 kips) to vertical reaction summary for dead load in RAM concrete analysis. II have hand calculated…

Not sure how to reconcile this error, the column has already been assigned and deleting it and bringing it back in doesn't fix the issue either. any help appreciated

I am trying to get an understanding of how the RAM Frame module distributes lateral forces between the concrete shear walls with openings and without openings. I went through all the discussion threads available on the website but unfortunately, I did…

A steel structure my office is working on has a large opening at the roof for skylights, as such lateral deflection of the roof system is a concern. To limit the deflections we came up with a horizontal in-plane truss. The diaphragm is flexible metal…