[skgarg]

Hi
Piping Layout Design : it is nothing but you can say the marriage of different equipments in your plant through Pipes .
connecting Pipes according to process keeping in mind the simple support for these pipes with civil structure available , keeping in mind the accessibility of Valves other equipments , scope of maintenance .
Stress Analysis is nothing but a flexibility analysis the pipe that you have laydown in previous question should be able to withstand the loading ( internal or external) along with that should be flexible enough to allow the thermal expansion so that the loads on connecting equipment nozzle should be below the allowable loads for any equipment.
It is just a Macro Idea ……details includes many more ……….
Regards
SG