ABOUT US. PTAC Engineering, LLC. has been in the precast-prestressed concrete design and detailing business since 1991. The principals of the company have 75 years of combined experience in the design and detailing of precast-prestressed concrete structures. More than 25 of those years were spent as employees of producer plants. PTAC has completed many projects of all sizes and levels of complexity using our EDGE family of software. The EDGE plat...
