Structural engineer for Trileaf (Chicago office). Involved in the analysis (TNX Tower, RISA 3D) and detailing of structural components for the telecommunications industry, including rooftop equipment sleds, equipment platforms and attachment to existing structural systems. Calculations include evaluation of existing structural systems to safely resist proposed laterally and vertically applied loads. Projects occur throughout the United States, for most major cellular phone service providers.Roger Zimmer is licensed as a Professional Engineer in multiple states: AL,AZ,AR,CA,CO,CT,DE,DC,FL,GA,ID,IL,IN,IA,KS,KY,LA,ME,MD,MA,MI,MN,MO,MT,NE,NH,NM,NY,ND,NC,OH,OK,PA,RI,SC,SD,TN,TX,UT,VT,VA,WA,WI,WY.

Performed structural calculations, designed and detailed overhead and jib cranes, support systems and associated concrete footings. Created drawings to coordinate with architects, general contractors and customers to interface with existing or future MEP or structural needs. Managed two employees for estimating, purchasing, sales support and drawing production.

Lead the product development of a proprietary coating for an ultra light weight glass fiber reinforced precast concrete panel. Performing structural analysis and design of light weight panels and connections.

Created structural steel and glass fabrication and erection drawings using AutoCad.

Executed the design intent of Architect and Engineer of Record by creating structural steel fabrication and erection drawings. Coordinated connections between concrete, masonry and timber. Managed delivery and installation of structural steel components for commercial buildings, both locally and nationally. Worked with team members through all aspects of the building process, including sales/marketing, estimating, design, fabrication, coating/finishing, shipping and installation.

Hand assembled prototype steel truck frames and prepared them for automated welding. Fabricated subcomponents and assisted Robotic Weld Technicians in placement and removal of completed fabrications. Prepared frames for coating.

Fitted and welded stainless steel and carbon steel shells and tanks for industrial equipment.

Applied national and local building codes, including wind and seismic forces, for the analysis and design of custom built 3D trusses and tensile structures in steel, aluminum and stainless steel. Prepared computer files for automated machining, drilling and welding. Checked fabrication drawings and managed workload of steel detailers. Developed full-scale destructive testing program for new structural steel product. Performed destructive testing of existing structural components as part of an ongoing quality control program. Wrote technical reports to document data.