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We offer structural engineering and steel detailing for electrical substation (15 KV to 500 KV) and transmission projects.
Our staff has over 60 years combined experience on substation projects. We also
provide structural engineering and CAD services for other types of projects.
Principals - Gary A. Johnston PE and Sayan Yadmark (retired). Our projects are located throughout the world and include substation structures (steel, aluminum, tubular, wide flanged, latticed,
and tapered tubular), transmission towers, industrial structures, highway sign
structures, and foundations.
As a small engineering firm, we can offer the careful, detailed and complete services that substation and transmission projects demand. All engineering services are provided by the principals, or are completed under their direct supervision.
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Structural Engineering - Substation Structures
- Structural Design & Calculations
- Structure Design Drawings
- Structure Field Erection Drawings
- Structure Shop Detail Drawings
- Anchor Bolt Plan Drawings
Structural Engineering - Transmission Towers
- Tower Design & Calculations
- Tower Design Drawings
- Tower erection drawings
- Tower bill of material drawings
- Tower shop drawings
Foundation Engineering
Spread Footings, Drilled Piers, Mat Foundations, Pile Foundations...
- Foundation Design & Calculations
- Foundation Plans
- Foundation Detail Drawings
- Rebar Drawings
- Transformer Oil Containment Design
Substation Engineering
15 kV to 500 kV Substations
Low Profile, Latticed, High-Bay type ...
- Substation Layout
- Substation Plan & Elevation Drawings
- One-Line Diagram Drawings ( switching only)
- Rigid Bus Calculations
- Sag-Tension Calculations
- Grounding Plan Drawings
If you would like to contact us about your projects or about our services,
please contact us as follows:
Principals' Profile
Gary A Johnston PE
Sayan Yadmark - Retired
Engineering and CAD Resources
Contact information