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Rockford 69kV Transmission Line Relocation

Rockford, Illinois

Milhouse is providing foundation design and analysis services for three new structures to relocate an existing 69kV transmission line in Rockford, Illinois. The new structures will have concrete foundations and consist of steel structures that will be designed in accordance with ComEd’s loading and clearance standards.

Milhouse, as a subconsultant to Black & Veatch, is responsible for developing the design of the new structures’ foundations and related drawings. Foundations will be designed in accordance with client standards. The work involves spotting the new structures within the proposed route provided by the client  on  plans  and  profile  drawings.  Milhouse  will  use  Moment  Foundation Analysis  and  Design (MFAD) software to analyze and design deep foundations for transmission line structures. MFAD uses a four-spring load-deflection model and an ultimate capacity model for the geotechnical analysis and design of laterally-loaded drilled shafts. For direct embedded poles, MFAD uses a two-spring loaded-deflection model.

Milhouse’s  scope  includes  creating  Plan  of  Work  drawings,  identifying  the  necessary  data  to  be acquired for foundation design, and providing a complete package of foundation drawings and loading schedules. Additional scope elements include providing engineering support to the client to secure all required permits and preparing the bill of materials, as well as construction support.

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