Revert "Revert "gantry.py: Added the CONSTANT value of fy=250 for 250 grade steel""
Revert "Revert "gantry.py: Added the CONSTANT value of fy=250 for 250 grade steel""

This reverts commit c0b5d9688395b44bdbac2bb05f8acc5be15425c1.

Mistakenly

yajnab/gantry_girder_design