You should try Structural Design Industrial Training course.  The course is part of civil engineering but to help structural designers to analyse configurations of the basic structural components, calculate the pressures that each component is likely to face, consider the strength of various materials. The course is designed in such a way that you are well versed with the science of ensuring stability, strength and rigidity of structures to take the load without failure. There are CAD Software courses concerned with structural design and engineering. Post completion of the courses, you can apply for jobs like Structural Design Engineer, Structural Designer, Structural Detailer, RCC Detailer, Structural Steel Detailer with a starting package of atleast 25,000 to 35,000 Rs per month. Structural Designers use CAD to produce drawings of structures. Using CAD, they create complex drawings, 2D and 3D renderings of structural components like foundations, roofs, retaining walls, etc. So this is one course that might help you.