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  • Building story shear reverses?

    I'm running into an issue where the building story shear at a low roof below the high roof gets separated into two pieces. This is for Earthquake X load case. One of them (103.13 kips) acts through the center of mass but there is this other horizontal…

  • Frame Story Shear to Check Beam Axial Force

    This is a two separate question post regarding Braced Frame Beam Axial Forces. PART 1: Looking to get some clarification on the correct axial load to be checking Braced Frame beams for with single diagonal braces. Per this Wiki article and some answers…

  • story shear on None Diaphragm

    Building story shear shows story shears on "None" diaphragm. See below. Loads and Applied Forces shows correct diaphragm forces. This happens for all load cases. "Masses" and "Gravity Loads" seem to be correct. Any help would be appreciated…

  • Zero Values Reported in Building and Frame Story Shear Reports

    Applies To Product: Ram Structural System First Affected Version: 17.00.00.93 Found in Version: 17.00.00.93 Fixed and Released in Version: 17.00.01.09 Environment: x64 Area: Reports…

  • RAM Frame: Story Shear suddenly increases at ground floor

    I have an instance where ground floor is a composite steel floor so I have modeled it in RAM with a 2 ft story height. I am unable to understand that the base reactions for the load case do not sum to the loads applied (for example Wind in the X direction…

  • RE: A problem about the note *** NOTE: THE TOTAL WEIGHT OF THE STRUCTURE CONSIDERED FOR BASE SHEAR CALCULATION ALONG GLOBAL Z DIRECTION IS NEGLIGIBLE.

    You mentioned about having floor diaphragms, reference loads in your points 3 and 4 but I do not see these in the model you attached. Softstory check as per ASCE can only be carried out if floor diaphragms are defined. The base shear in Z is comparable…

  • RE: Story shear at each floor

    You may use the SET PRINT 17 command in the input command file as shown next The analysis output file would then list the shears at each story on a mode by mode basis. You need to manually combine (SRSS) the shear values for each mode to arrive at…

  • RAM Frame Story Shear with Multiple Diaphragms

    I have a (2) part issue. I have a large rectangular building with 1/4" slope in 2 directions away from a center ridge. The building is structurally separated by an expansion joint down the center of hte building and about 1/3 of the right half is separated…

  • RE: Response Spectrum Analysis & Equivalent Lateral Force

    - Yes, You're right. Can I described this factor on Response Spectrum defination as shown ? - And anyhow,as ASCE 7/10; I'll compare that Response Spectrum > 0,85*Equivalent Earthquake Load...

  • Incorrect Building Story Shear and Frame Story Shear for Dynamic Loads

    Applies To Product: RAM Frame Analysis First Affected Version: 15.03.00.00 Found in Version: 15.03.00.00 Fixed and Released in Version: 15.04.00.00 Area: Analysis Issue #: 537872…

  • RE: RAM Frame Applied Story Shear vs. Building Story Shear in One Story Model

    Check our support solution on story shear: It's probably the result of P-Delta analysis.

  • RE: Printing Story shear and story stiffness in STAAD pro

    To print the shears at each level, use the command PRINT LOAD DATA with the analysis command as shown next PERFORM ANALYSIS PRINT LOAD DATA The analysis output file will list the shears at each node and also by floor. To get the story stiffness, first…

  • RAM Frame - Dynamic Analysis FAQ

    Product(s): RAM Structural System (Ram Elements or STAAD.pro) Version(s): Any Area: Analysis; Dynamic Analysis How does a dynamic analysis using response spectra for seismic loads differ from a static analysis using…

  • RAM Frame - Building and Frame Story Shear

    Applies To Product(s): RAM Structural System Version(s): Any Area: Analysis; Reports How is the Building and Frame story shear calculated? When the program calculates the shear at a particular level, it…
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