Commonwealth Dynamics Inc., is a leader in the design, construction, and maintenance of tall structures for the power industry including steel stacks, concrete chimneys, combustion turbine exhaust systems, silos, cooling towers, and other associated structures. Our reputation is built on engineering excellence and a consistent capability to provide innovative and cost effective solutions to the full spectrum of design and construction challenges. We serve a wide range of clients in power generation and other major industries, both in the United States and around the globe. 

Reinforced concrete chimneys are among the tallest man-made structures on earth. They are sophisticated pieces of equipment which are often subjected to some of the most powerful forces of nature. Our in-house capability to both design and construct these complex structures makes us uniquely qualified to satisfy our client's most demanding project schedule and budget requirements with innovative and cost effective solutions.

We utilize our field expertise in both jumpform and slipform construction techniques, coupled with a proven proficiency in ACI 307, CICIND, and other governing chimney codes, to produce the most comprehensive in-house international chimney and stack design/construct capability available in the industry.

Commonwealth Dynamics is a member of CICIND International Committee on Industrial Chimneys.

SLIPFORM CONSTRUCTION

Concrete chimneys are built using one of two available forming methods. The slipform method is well suited to chimneys that are very tall or have very large diameters, and on projects with accelerated schedules. With this method, concrete is poured continuously into a single form that is steadily elevated (or slipped) to create the concrete column. An integrated hydraulic jacking system raises the formwork, controls the shell taper and wall thickness, and uses lasers to constantly monitor alignment. The slipform method is labor intensive, with work performed on an around-the-clock basis.

JUMPFORM CONSTRUCTION

The jumpform method relies on more traditional concrete forming techniques to build the shell on an incremental basis. Commonwealth uses state-of-the-art technology to make our jumpform system an efficient construction method. Our construction crews and technicians have unparalleled expertise when it comes to building tall stack structures with either forming method.

Commonwealth has designed and built more steel stack systems than any company in the world. We are recognized as a leader in dual wall and single wall steel stack technology having been responsible for over thirty years of research, development, and in-service testing. Our team of engineering experts continue to provide practical solutions to the many challenging service conditions facing today's complex stack projects.