Lauren Schuster's Activities

Error Running Beam & Frame Module for historic beam sizes - user size (X) not found in steel table. User Size will be cleared.

Jak Inglese AIA — Tue, 17 Sep 2019 17:32:29 GMT

Currently working on modelling on existing 1920s high rise with historic beam sizes. I have the original shop drawings, so I know the sizes and was able to find their properties in historic steel manuals. After inputting them in Model, tried running the Beam module and got the following error: "User size (X) not found in steel table. User Size will be cleared. How do I get RAM to run the historic sizes?

RAM Elements to Revit "ISMStructure PropertyCatalog initialization failed"

Lauren Schuster — Thu, 03 Feb 2022 15:48:38 GMT

Hello,

I am trying to export a RAM Elements model to Revit 2018. The RAM elements model has been analyzed. There are custom sections and materials defined since this is an existing building that was designed using AISC 5th Edition.

When I attempt to create the ISM Repository, I receive the error message "Previous IsmStructurePropertyCatalog initialization failed". I understand from the article below that the Bentley Property Catalog service needs to be running. It is not available under "Services".

communities.bentley.com/.../ism-error-ismstructuralpropertycatalog-initialization-failed

I have Bentley ISM REVIT Plugin 10.02.02.26, Bentley Structural Synchronizer 10.02.01.147, RAM Elements, 15.00.00.18 and Revit 2018. Are all of these versions compatible? The latest version of the Structural Synchronizer available through our IT department is Bentley Structural Synchronizer CONNECT 10.03.01.06.

RAM Frame Inherent Torsion for Semirigid Diaphragm

Lauren Schuster — Fri, 27 Aug 2021 16:07:07 GMT

ASCE 7-10 12.14.8.3.2.1 requires that "The design of structures with diaphragms that are NOT flexible shall include the torsional moment, Mt, resulting from eccentricity between the locations of center of mass and the center of rigidity".

I created a "Center of Rigidity" load case in RAM Frame and the report states that the center of rigidity is not calculated for semirigid diaphragms. How do I verify that the inherent torsion (due to eccentricity between the location of center of mass and center of rigidity) is accounted for in the semirigid diaphragm?

RAM Frame Results (Not Available)

J L — Wed, 13 Feb 2019 14:52:24 GMT

After running a full analysis in RAM Frame, I am still unable to extract RAM Frame Results from the data extractor. My hope is that I will be able to download an excel file that includes column shape, reactions for each load combination, and node number a the base of each column. I can't find any single report that contains those all together. I thought this might be able to do that.

Best practice for modeling concrete beam with eccentricity

Lauren Schuster — Sun, 16 May 2021 15:33:35 GMT

I'm trying to design a concrete beam; however, the wall above the beam is not centered on it creating a 4" eccentricity. Is there a way to capture this in RAM structural? I'd like to export the results from RAM frame with the torsion considered on the beam due to the eccentric wall location.

RAM Frame Polygon intersection algorithm

Lauren Schuster — Mon, 12 Apr 2021 19:31:08 GMT

I receive an error message "Polygon intersection algorithm failed for the following input polygons:...." when I open RAM Frame. Once I click "OK", the RAM Frame module closes. I don't understand why I'm receiving this error. The only change I made in the model before receiving the error was I added bracing members in a few bays.

RAM Modeler: what does the cracked section factor for torsion impact for beams?

Lauren Schuster — Thu, 08 Apr 2021 16:25:37 GMT

The RAM modeler requires cracked section factor for concrete beams. ACI 318 chapter 6 defines cracked section properties for beams in flexural and axial loads, there is no requirement for torsion cracked section properties so it is unclear what the analysis is considering based on this input in RAM.

Staad - cover not accurately reflected in output?

Lauren Schuster — Wed, 17 Feb 2021 21:36:21 GMT

I'm designing a concrete slab in STAAD. AT the end of the file, I have the following and would like to define the cover as 2.6":

START CONCRETE DESIGN
CODE ACI 2011
UNIT INCHES KIP
FYMAIN 60 ALL
FC 4.5 ALL
DESIGN ELEMENT ALL
CLB 2.6 ALL
CLT 2.6 ALL
END CONCRETE DESIGN
PRINT SUPPORT REACTION
FINISH

The output gives a cover of 0.75" which is not was defined in the input, the following is an example:

ACI 318-11 ELEMENT DESIGN SUMMARY
=====================================

ELEMENT LONG. REINF MOM-X /LOAD TRANS. REINF MOM-Y /LOAD
(SQ.IN/FT) (K-FT/FT) (SQ.IN/FT) (K-FT/FT)

FY: 60.000 KSI FC: 4.500 KSI COVER (TOP): 0.750 IN
COVER (BOTTOM): 0.750 IN TH: 6.000 IN
2 TOP : Longitudinal direction - Only minimum steel required.
2 BOTT: Longitudinal direction - Only minimum steel required.
2 TOP : Transverse direction - Only minimum steel required.
2 BOTT: Transverse direction - Only minimum steel required.
2 TOP : 0.065 0.00 / 0 0.065 0.00 / 0
BOTT: 0.065 0.07 / 4 0.065 0.06 / 4

How do I get the cover accurately considered in the output?

RAM Frame Eigen Solution Unavailable

Lauren Schuster — Fri, 18 Dec 2020 20:06:00 GMT

Hello,

I am trying to analyze a structure and am receiving the "Eigen Error" message and unable to complete the analysis. I understand from the Wiki page that it may be beneficial to determine the period first and input in the seismic and wind criteria. When I try to add a dynamic analysis, the "OK" button to select the number of modes is greyed out. Is there a step needed before adding the Eigen Solution dynamic load case?

Thank you in advance!

"No deck assignment found inside slab boundary on Wall 1".

Lauren Schuster — Wed, 12 Feb 2020 23:44:50 GMT

All,

I started modeling a building with concrete walls, steel joists, and metal decking for the roof. When I am looking at the layout (2d) plan view the deck and joists show just fine. When I go to the 3D viewer or RAM Frame, they do not show and I get an error message:

"No deck assignment found inside slab boundary on Wall 1".

Can anyone determine what the issue is here? I've assigned slab edges and slab layout and steel joists as I normally do and haven't had this issue before. Any thoughts are appreciated!

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Wed, 12 Feb 2020 21:32:02 GMT

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