Tag Helical Piles

A perpetually soft section of track in Cook, Minnesota, required additional subgrade stabilization. To strengthen the area without removing the existing track, 85 Rail Piles were installed along an 85-foot section.

The piles were installed in a crisscross pattern beneath the track structure to reinforce the soft soils and improve support for ongoing rail traffic. This approach allowed stabilization work to be completed with minimal disruption to the existing rail line.

Follow-up surveys were conducted one year after installation. Survey results and maintenance records confirmed that the Rail Pile stabilization system successfully improved performance along the treated section.

Construction of a new concrete utility vault along East 48th Avenue created a significant temporary-support challenge. The vault intersected an existing sewer main that needed to remain operational through most of the construction process.

Before excavation began, the project team needed a dependable way to support the sewer main, maintain its elevation and preserve clear access for installation of the vault and its permanent reinforcing system.

Project Challenge

The new vault would encase the existing sewer main. To complete the work, crews needed to suspend the line temporarily while they excavated, installed reinforcing and constructed the concrete vault around it.

The installation sequence played a critical role in the project. Crews needed to establish the temporary support system before excavation exposed the active sewer main. After exposing the line, the project team had to keep it supported and level while workers completed construction beneath and around it.

The project also required a fully removable system so crews could backfill the completed vault without leaving temporary foundation components in place.

MAGNUM Geo Solutions’ Role

MAGNUM Geo Solutions provided engineering for the complete temporary support structure and developed the recommended sequence for pile installation, excavation, sewer support, vault construction and removal of the temporary system.

This coordinated approach addressed the structural requirements of supporting an active sewer main while allowing construction to proceed beneath and around it.

MAGNUM Products

• Six MAGNUM® MH939U3-6 helical piles
• Six MAGNUM® MHC1300-9P24B2 end caps

Magnum Geo-Solutions stabilized the front corner of the Historic Opera House in Downtown Loveland, CO using 3” diameter push piers.

Installation of helical piles for a launch facility at NASA Kennedy Space Center. Magnum Geo-Solutions performed the engineering calculations to size the helical anchors for this project

Magnum Geo-Solutions designed 42” diameter rock-socketed drilled shafts and driven H-piles to support a 3-lane, 250’ long bridge over the Passaic River between Fair Lawn and Paterson, NJ.