Happy Employees

John D. Weaver, PE
Principal – Mechanical Engineer

Mr. Weaver has thirty-three years engineering experience in mechanical system design, construction management, cost estimating and consulting. Experience includes projects for commercial, institutional, pharmaceutical, food and chemical industries. Designs involved mechanical/HVAC systems for laboratories, pharmaceutical clean rooms, air washer systems and variable volume distribution. Projects vary in complexity from general office area air-conditioning to precision control clean rooms and laboratory systems with fume hoods and pressurization control to prevent cross-contamination. Central utility plant designs and renovations have included heating and chilled water, glycol, steam, ice storage and DX systems; designs utilized variable speed and variable primary pumping distribution systems as well as campus distribution systems. General process experience includes compressed air, DI and RO water, dust collection, vacuum systems and raw material pumping distribution systems. He has considerable experience in system commissioning and forensic engineering