-Prepared detailed drawing of architectural designs and plans for buildings and structures according to specifications provided by architect. -Designed drawings and topographical and relief maps used in civil engineering projects, such as highways, bridges, pipelines, flood control projects, and water and sewarage control systems. -Developed specifications and instructions for installation of voltage transformers, overhead or underground cables, and related electrical equipment used to conduct electrical energy from transmission lines or high-voltage distribution lines to consumers. -Prepared detailed working diagrams of machinery and mechanical devices, including dimensions, fastening methods, and other engineering information.