ASME B31.3 Process Piping Allowable Bolt Load And Bolt Stress

Calculate ASME B31.3 process piping bolt design load and design stress from temperature (ASME B31.3 Table A-2). Stress values are interpolated from the US data tables (US units govern).

Bolt load is calculated from the design stress and the tensile area for either ANSI threads or ISO threads. For temperatures below the data range, the stress value is constant (fracture toughness should also be considered for low temperature operation). For temperatures above the data range the stress values can either be constant value from the end point, constant slope from the end point, or zero from the end point. Engineering judgement is required to use extrapolated values above the data range.

Use the Data Plot option to plot the design stress versus temperature for the selected material. Use the Data Table option to display the data table (Table A-2). Use the Result Table option to display a table of design stress and design load versus either material type or bolt diameter. Refer to the help pages for notes on the data tables. Use the workbook ASME B31.3 data tables to look up bolt allowable stress data.

Reference : ANSI/ASME B31.3 : Process Piping (2018)

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Related Modules :

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