Vaulted Ceiling Engineering Drawings for Residential Remodel

I am planning a remodel of my residential house. I need a professional to create engineering drawings for the installation of a vaulted ceiling. The drawings should be suitable for a remodel of an existing house, and should take into consideration the structural integrity of the house… (Budget: $750 – $1500 CAD, Jobs: AutoCAD, Building Architecture, CAD/CAM, Civil Engineering, Structural Engineering)