3D Model of Rectangular Steel Storage Tank

I need a 3D model of a rectangular steel storage tank based on my sketches. The model will be used for Finite Element Analysis (FEA). Requirements: - Rectangular tank shape, with domed roof - Reinforcement... (Budget: £20 - £250 GBP, Jobs: 3D CAD, 3D Design, 3D Modelling, AutoCAD, Solidworks)