(50 pts) The simply supported beam shown in the figure below is being designed for shear. #3 stirrups (Grade 40) are to be used.-a. Draw the factored shear envelope for Vu (20 pts)-b. Determine the resistance to shear provided by the concrete. Are there any regions where no shear stirrups are required? (15 pts)-Design the stirrup spacing required to resist the maximum shear (15 pts)с.-Design the stirrup spacing required to resist the maximum shear