Job Description Need plumbing engineer to re-design plumbing drawings and to provide calculations. CAD files will be provided, please respond to post and I will forward the drawings to you Request a proposal for designing of this drainage system per the attached drawings which will need to be redrawn to reflect the changes requested. The sizing of the pipes will need to be supported by design calculations that will pass plan check. We will need to run the rain water through the FlowGard filter system attached. This will need to be sized. In addition of the design and cad work it would be helpful if the person that does this design work is a licensed Mechanical Engineer in the State of California. If not licensed in California then another location may be acceptable . Keywords: Engineering & Technical Design, stata, mechanical, engineering, drawing, design