FeH2OL0cTM

FeH2OL0cTM

A top-down shoring and groundwater-management system using layered shotcrete walls.

The concept

The concept uses shotcrete feather joints, drainage board, steel piles and staged excavation. Footprint presents the design as a way to address groundwater behind a shoring wall.

This is a concise concept summary. Review the original Footprint Engineering page for technical information, drawings and current terms.

Read the original page ↗

This system is a top-down shoring solution constructed with one-of-a-kind shotcrete feather joints ensuring no water will penetrate the wall. The drain board lowers loading, and enhances performance. In the rare case where there is excess flow behind the wall, this can be adjusted accordingly with a detailed curtain grouting feature. The system features 2 quilt-like shotcrete layers. These 5” layers sit between equally spaced steel piles in 5 MPa backfill. To construct, soil is excavated 4 to 6 feet in depth at a time so as to ensure no ground loss before the FeH2OLocTM is constructed. The unique shotcrete design ensures no cracking of the wall.

Key Savings Summary

Cost

$9,599,185

-37%

Schedule (work days)

384

-37%

Concrete (m3)

27,168

-77%

Steel (kg)

769,508.1

-49%

Fuel (L)

124,388.3

-76%

CO2 (tons)

70,599.3

-74%

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