<img alt="" src="https://secure.vane3alga.com/162089.png" style="display:none;">


Day & Zimmermann brings big ideas to life by providing innovative, value-driven, engineering solutions across a broad range of industries.

Day & Zimmermann offers full-scope engineering and design services for projects that range from new facilities to revamps and upgrades. Our experienced engineering resources seamlessly deliver strategic planning, conceptual engineering, front-end engineering, detailed engineering, 3D digital facility lifecycle solutions, and more.

Engineering Services

  • Full-service multidiscipline engineering
  • Conceptual engineering through detailed design, startup, and commissioning
  • Process simulation & optimization / technology selection
  • Equipment, bulk material & subcontract services procurement
  • Hazard analysis
  • Laser Scanning
  • Constructability
  • Capital program/project management
  • Small to mid-sized capital and maintenance projects
  • Brownfield facilities, retrofits, and upgrades
  • Full-service estimating for capital projects


Flexible execution strategies include site-based teams, in-plant staff augmentation and seconded personnel, and office-based project execution.

Projects & Construction

Our teams are familiar with, and have worked on, virtually every primary and secondary plant system in both outage and non-outage environments, routinely executing critical and near-critical path work scopes.

Learn More

Maintenance & Modifications

Maintenance & Modifications

Our Total Accountability Model provides a single point of contact driving accountability across safety, human performance, cost, schedule, quality, and resource supply.

Learn More
D&Z Engineering Solutions Provider-1

How Can We Help You?

Please contact us for additional information or any questions you may have.   We will follow up with you as requested.

Contact Us

Markets We Serve


Specialty chemicals, petrochemicals, bulk chemicals, fine chemicals, and synthetic rubbers.

Textiles & Fibers

Wovens, non-wovens, fibers, nylons, and films.

Life Sciences

Pharmaceutical, medical devices, agricultural, and biotechnology.

U.S. Government

Design of secure, mission-driven facilities.

Consumer Products

Supports the production, storage, and packaging of a wide range of consumer products.

What We Do

Capital Effective Project Delivery.

Capfx® is our process for delivering capital effectiveness, offering the opportunity for predictable cost savings compared to a conventional approach to project delivery.

Read more on our blog

P&I Assembly Process
Day & Zimmermann Bayer Crop Sciences

D&Z Project for Bayer Achieves Success with Significant Time and Cost Savings

Day & Zimmermann (D&Z) provided engineering (FEL3 and detailed design), procurement, and construction support for a two-year capital project that enabled production of a new product for Bayer Crop Science. Time-to-market was a key driver towards the successful completion of this schedule-driven project.

Read The Full Story

Day & Zimmermann Chemical Production Plant

Large U.S. chemical production plant chooses D&Z to convert their industrial boilers to meet EPA guidelines

With critical schedule constraints to convert their coal-fired industrial boilers to meet EPA guidelines, our client selected Day & Zimmermann as its contractor – continuing a 30-year relationship at their North American sites.

Read the Full Story