Residential Concrete Structural Engineer Needed

UPDATE Patio Description I am planning to pour a 5 inch concrete slab that has two sections (two rectangles touching/continuous pour). One is 12x30 basic patio, and the other is 16x20 with foundation... (Budget: $30 - $250 USD, Jobs: Architectural Engineering, AutoCAD, Building Architecture, Building Design, CAD/CAM, Civil Engineering, Engineering Drawing, Structural Engineering)