1) The question needs more clarity. Why do you think that the foundation of a RCC building and that of a steel framed building is different.
Please explain the context of your question, details of the project and more information
2) We already have a similar discussion on top reinforcement in footings and this is not specific to steel buildings but to footings of all kind of buildings.
You can see it here.
3) If you are a registered student in civilera, please post your subsequent / future new questions in course.civilera.com ie; in the course community where you are enrolled.
This discussion can continue here.