SVC Substation, northern, WV
- 150 foot vertical, 1.5 (H):1(V) slope 150,000 cy reinforced fill
- Over 60 acres of geo-grid installed
- 7,300 sf - 25 foot high Redi-Rock retaining wall
- 500,000 cy total earthwork
- Lime soil treatment
Located in the challenging terrain of West Virginia, Beaver Excavating began construction on the SVC substation project in the middle of winter in order to meet the project deadline of starting deep foundations by early summer. The project faced significant engineering, constructability, and safety challenges. The existing site had no level footprint to work within – slopes were steeper than 2/1 and contained wet, unstable soils which were removed and replaced with geogrid reinforced fills.
Over 60 acres of geogrid was used to reinforce 150,000 cy of slopes constructed at 1.5/1 in excess of 150 vertical feet. Multiple slopes were worked simultaneously, along with managing multiple crews and shifts, in an effort to maintain the project’s demanding schedule. Beaver Excavating also constructed a 7,300 sf, 25 foot high Redi-Rock retaining wall as part of the project’s overall earthwork retention system design. Unstable soil conditions and limited site access required frequent reconstruction of narrow haul routes. Lime soil treatment was utilized to meet the compaction and stability requirements of the project’s 500,000 cy of earthwork.
The project was completed safely with the help of detailed discussion between craft and supervision during daily safety briefings. Quality and schedule were successfully managed through very close collaboration with the owner and engineer.
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