Foundations and Steel Structure Design

EES Consulting provides foundation designs according to client preferences, site conditions and constructability. Typical foundation types include drilled piers, spread footings, driven piles and slab on grade. Computer software is used to aid the design of drilled pier foundations. Geotechnical explorations are usually obtained based on EES’s specifications.

EES Consulting also provides detail design of steel support structures, including detailed fabrication drawings. If dictated by client preference or project requirements, only structure loadings and basic dimensions may be provided. For dead-end structures we typically provide loading trees, dimensions and attachment requirements, leaving detail design to the structure fabricator. We also provide coordination between equipment procurement, such as disconnect switches and instrument transformers, by adjusting dimensions of the steel structures during shop drawing review to match the equipment to be supported.

Grays Harbor PUD

EES Consulting was retained to provide engineering design and permitting support for replacement of an existing substation with the New Central Park 115 – 12.47kV substation consisting of two 115-kV transmission lines, ultimately two 15/20/25 MVA power transformers and two lineups of 15-kV metal-clad switchgear. EES Consulting prepared site development, retaining wall design, oil containment and drainage design, fencing design, and foundation design for a Public Works Contract, and steel support structure design, bus and electrical assembly design, conduit design and ground grid design for a District Work Package. We also prepared permitting applications and accompanying drawings for the necessary environmental and construction permits.

Featured Projects

Grays Harbor PUD Integrated Resource Plan

EES Consulting prepared Grays Harbor’s 2020 Integrated Resource Plan. Grays Harbor is required to submit an IRP to the state of Washington every two years that demonstrates how it will meet the electric power needs of its members with a reliable supply of power delivered in the most cost-effective manner. The 2020 IRP was an evaluation of resource alternatives that could be deployed to meet Grays Harbor’s load and meet state of Washington renewable energy requirements under the Energy Independence Act and carbon-free energy requirements under the Clean Energy Transformation Act. Grays Harbor embarked on an IRP to study alternative sources of supply that could best serve its customers’ needs for the period 2021-2040.

Anchorage Municipal Power & Light

EES Consulting has prepared Integrated Resource Plans (IRP) for ML&P since 2002 to assist ML&P with the evaluation of capital spending throughout ML&P, covering transmission and distribution, generation, SCADA systems, use of dual fuels, and other related areas.  To evaluate the alternatives available to ML&P for future generation, the IRP was developed as a tool for examining the economic, engineering and other attributes associated with various options.