Wherer can I find the verification document of RCDC for ACI 318 design result ?

Question

Is there any documentation or manuscripts for calculation verification ? 
 because there is a slight difference between the result of ETABS and RCDC (ETABS need more rebar area then RCDC)

Abhijeet Gundaye · Answer

Hi when RCDC reads the column geometry and forces, it also reads the beam information which is required for joint checks. it includes the beam geometry and end forces. it also identify the angle at which beam resting on column in plan. Beam in plan angle w.r.t. column is required to calculate beam capacity and resolve as per column major and minor direction. Presently validation document for IS code is available to below link, 
 Column Beam Joint check_Validation document_IS 13920 -2016 
 https://communities.bentley.com/products/ram-staad/m/structural_analysis_and_design_gallery/274031 
 The process and steps explained in above document is almost same in ACI code. It will give you fair idea about joint check and how it is handled in RCDC. 
 we will try to create a validation sheet for joint checks like flexural and shear check as per ACI code. if possible we will give the document next week.

Abhijeet Gundaye · Answer

Hi RCDC calculates the Beam capacity as per Area of steel calculated as per available bending moment. The detailing of the reinforcement is done as per best possible arrangement of available diameter. Generally area of steel provided would always be more than area of reinforcement required. if user provides much more steel than the actually arrived from available diameters, then it is not captured in joint check as it doesn't read reinforcement provided in beam from beam design file. attached is the Joint check validation document for your reference. 
 /cfs-file/__key/communityserver-discussions-components-files/5932/Column-Beam-Joint-Check-Validation-Document_5F00_ACI-38M-2014.zip i n the latest version of RCDC (9.4.0.128 OR 9.4.1.6) beam capacity is calculated slightly on higher side and it is now corrected in the new version ( V 10.0.0). the New version will be available by mid of February.

Abhijeet Gundaye · Answer

Hi please click on below link for validation sheets, 
 ACI -M Validation sheets 
 https://communities.bentley.com/products/ram-staad/w/structural_analysis_and_design__wiki/47574/aci_5f00_318m_5f00_validation-sheets Please make sure that the design settings in both the software are same. in case of column, the of effective length factor should be same in both the software. if you want to compare E-tabs and RCDC result, please share E-tabs design output and RCDC file for comparison.

Abhijeet Gundaye · Answer

Hi the validation sheets are created for a given forces, material and section properties. there is no specific model and validation sheets are not created as per analysis file. attaching one STAAD file for your reference which is used for some validation sheets 
 /cfs-file/__key/communityserver-discussions-components-files/5932/RCDC_2D00_Staad_2D00_Demo-_2D00_with-RCC-wall.std

Wherer can I find the verification document of RCDC for ACI 318 design result ?

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