DKR is a small business, civil/structural engineering company. We are committed to providing quality structural engineering services at affordable prices. DKR was founded in 1996 and provides engineering services such as structural inspections and reports, structural analysis and design for building minor reconstruction or rehabilitation, and investigation of litigation/accident sites for attorneys. call for a free estimate. Donna Ryduchowski Ph.D., P.E., Principal of DKR, has over 30 years of diversified experience in the Civil/Structural Engineering Field. She is a NJ and NYS licensed Professional Engineer with extensive experience in Structural Design, Rehabilitation and Inspection. Call to schedule an appointment.