Appendix A: Flange Calculations

For imperial: For Metric: Torque calculations: Example: Calculating the torque required for a bolt...

For imperial: Tension Calculations:

For imperial: Bolt tensile stress area calculations: Note : Users can also directly enter a Bolt Tensile Stress Area. This user-entered value will then also be the ...

IMS uses Flange Size and Class Rating to determine Stud Size (and number of holes). Stud Size lookup Table.  

IMS uses Flange Size and Class Rating to determine Target bolt stress (in Mpa and then converted to Psi). If the Flange Size , or the Class Rating , is missing, the IMS suggestion will be unavailable. IMS will then suggest 70% of the Bolt ...

Based on Target Bolt Stress , if all values are available, IMS calculates a suggested Target Gasket Stress with the following formula: ...

IMS uses the ASME B1.1 lookup tables to determine TPI  (Threads per inch) from Stud Size . For better accuracy, the TPI lookup is based on a Thread series option, which can either be “Coarse” or “Fine”. Depending on the selection, IMS wil...