Additional Options for Concrete Chimneys
Hoffmann’s dedicated 70,000+ sq. ft. fabrication facility with certified welders produce quality steel fabricated components such as chimney caps, steel breeching, ductwork, and more that are specific to your project.
Our cumulative, in-house capabilities give you, our customer, the “One Contractor Advantage.”

Foundations
Hoffmann provides comprehensive design and engineering with chimney; based on soils report.
- Spread Footing
- Ring Beams
- Mat Foundations

Deep Foundations
Hoffmann provides comprehensive design and engineering with chimney; based on soils report.
- Caissons
- Building Piers
- Auger-Cast Piling
- Driven Concrete Piling
- H Piling
- Stone Columns
- Pipe Piling

Ladders and Platforms
Ladders, platforms, and winding staircases offer a form of egress and ease in access to equipment. Hoffmann provides custom design, fabrication, and installation. These components can be fabricated from stainless steel, aluminum, or carbon steel with a galvanized or painted finish.
- Caged Ladders
- Ladder with SAF-T-Climb

Personnel Elevators
Personnel elevators offer ease in access for equipment maintenance.

Aviation Lighting
Hoffmann can provide aviation lighting and follows the FAA set guidelines for obstruction lighting (FAA Circular AC 707460-1K Obstruction Marking Lighting) on concrete chimneys and steel stacks.

Chimney Caps
Hoffmann chimney cap designs are based on the chemical makeup of the flue gas.
The flue gas flow rates determine the outlet size.

Steel Breeching and Ductwork
A chimney breeching is a small segment of ductwork leading from the exterior of the shell to the interior of the liner. Hoffmann’s engineering staff will provide proper layout and detailing of a breeching system. The layout and detailing will include ductwork sizing to compensate for the desired flow.

Lightning Protection
Hoffmann’s chimney or stack design is based on the NFPA780 standard for Installation and the National Electrical Code.

Access Lighting
Since most chimneys and stacks operate 24 hours a day, it is necessary for periodic inspections. Access lighting aids in the ability to thoroughly inspect and monitor the chimney stack operation during insufficient daylight or at night. The National Electrical Code is followed for all installations.
Have a Project in Mind?
Let’s Get Building!
Expert design-build firm specializing in reinforced concrete silos & industrial chimneys since 1914. Trusted nationwide for durable storage solutions.
6001 49th Street South
Muscatine, Iowa 52761
Location & Directions
Phone
(563) 263-4733
sales & services
Silos, Chimneys and Inspections
sales@hoffmanninc.com
563.263.4733 Phone
Steel Stacks, Fabrication and Industrial Services
sales@silverhawkfab.com
563.263.4733 Phone
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