Project Overview
Columbia Engineering Group provided structural engineering and steel design for Gateway Substation in Richland, Washington. The project supported a new electrical substation serving the City of Richland.
CEG’s scope included structural design and fabrication support for modular tapered steel structures used to carry electrical equipment and transmission components. These structures included A-frames, H-frames, and T-frames designed to support long-term utility infrastructure performance.
Structural Design Approach
This project required more than standard steel detailing. Because substation infrastructure must perform under demanding operating conditions, the design had to account for wind, seismic, and equipment loads while also supporting efficient fabrication and field installation.
As a result, CEG combined structural analysis with practical detailing and fabrication-focused support. That approach helped align constructability, durability, and long-term performance across the steel support structures.
Engineering Scope of Work
CEG delivered structural engineering and steel design for the new substation support structures. Overall, the scope focused on code-aligned analysis, fabrication support, and field-ready detailing for utility infrastructure.
🏗️ Steel Structure Design
CEG provided structural design for modular tapered steel structures, including A-frames, H-frames, and T-frames used to support substation equipment and transmission components.
📐 Structural Analysis
The engineering scope included structural analysis and load calculations for wind, seismic, and equipment loads in accordance with applicable NESC and ASCE standards.
🔩 Connection and Base Plate Design
CEG provided connection detailing and base plate design to support efficient fabrication, galvanizing, and field installation for the steel structures.
🏭 Fabrication Support
The project included design and fabrication support so the structural package could move more efficiently from engineering through galvanizing and installation.
✅ Constructability and Durability
Work was coordinated to support constructability, durability, and long-term substation performance, helping the structural system meet both installation and utility service needs.
Project Outcome
Gateway Substation added new structural support infrastructure for an electrical substation serving the City of Richland. Through structural engineering, steel design, and fabrication support, CEG helped deliver utility-ready support structures designed for demanding service conditions.
Just as importantly, the work combined structural analysis with constructable detailing. As a result, the project supported efficient fabrication, galvanizing, and field installation while maintaining long-term durability and performance for the substation infrastructure.
What Made This Project Stand Out
The project included modular tapered steel A-frames, H-frames, and T-frames designed to support electrical equipment and transmission components.
CEG performed structural analysis for wind, seismic, and equipment loads in accordance with applicable NESC and ASCE standards.
Connection detailing and base plate design were developed to support efficient fabrication, galvanizing, and field installation.
The work was coordinated around constructability, durability, and long-term substation performance for utility infrastructure serving the City of Richland.