MecaLug is a Padeye or Lifting Lug Calculation Software package that is used to perform padeye or lifting lug calculations as well as analyze loads acting on padeyes or lifting lugs for a structure or piece of equipment. Several different styles of padeyes or lifting lugs are offered giving the user multiple options in selecting an appropriate lifting lug. There are also several different configurations in the MecLug Software for different equipment and structures. The lifting lug software even has templates for lifting a stack or cylindrical vessel from horizontal to vertical, using either lifting lugs or lifting trunnions. For this special type of lifting of stacks, the lifting lug software considers the multiple angles as the structure rotates from horizontal to vertical in order to find the worst angle on the lifting lugs/trunnions and tailing lug.