Allied Engineering (AEI) is now Salas O'Brien. We have been providing multi-discipline engineering support to our clients since 1958. Our experience lies in our knowledge and understanding of Structural, Mechanical, Electrical, Plumbing, Fire Protection and Technology systems for buildings on both new and/or renovation design projects. Our expertise is best seen in our attention to detail, integrated designs, and our in-house staff coordination of all project disciplines. Allied Engineering is 100% Employee Owned. AEI is proud of our energy efficient, green design skills. We have a strong understanding of green and sustainable design strategies and practices, and corresponding credits in the LEED™ Rating System. We collaborate with architects, developers, contractors and owners on a wide-range of projects including Commercial, Industrial, Public Safety, Municipal, Healthcare, Education and Senior Living.