Soil Nail and Shotcrete Retention

Home / Earth Retention Systems / Soil Nail and Shotcrete Retention

Soil nails are drilled and grouted steel elements that are installed to reinforce existing soil as it is excavated in lifts.  Soil nail spacing is controlled by the allowable depth of each lift, which is driven by soil conditions.  After soil nails are installed at each lift a drainage system and reinforced shotcrete facing are installed over the nails.  This process continues until the desired excavation depth is achieved.

INDOT R-38541

Project Location: SR13/I69 Pendleton
Project Type: Soil Nail/Shotcrete Retention
Owner: INDOT
Original Contract Completion Date: 12/19

  • 3500 SF of finished shotcrete facing.
  • 121 EA soil nails

Overview

As part of an interchange improvement project at SR13 and I69 the contract plans called out a design/build cutwall to facilitate the installation of a new multi-use pass along SR 13 under I69. The wall was located in the area of the existing slope wall underneath the existing I69 bridges over SR13. Based on overhead height restrictions and stiff soils, Beaty elected to utilize a soil nail and shotcrete approach with finished facing vs a traditional low overhead h-pile/lagging cutwall approach.

Highlights

  • 3500 SF of finished shotcrete facing.
  • 121 EA soil nails

INDOT R-33238

Project Location: Brown County, IN
Owner: INDOT
Engineer: Lochmueller Group
Completion Year: 2018

  • 3,800 SF of shotcrete facing.
  • 168 EA soil nails

Overview

Beaty Construction was a specialty subcontractor for two design/build cut walls required to realign Yellowwood Lake Road.  A soil nail wall with shotcrete facing was the chosen approach based on the existing cohesive soils and variable bedrock.  The cut wall design also included a redesign of the proposed wall drainage specified by the road design engineer.

Highlights

  • 3,800 SF of shotcrete facing.
  • 168 EA soil nails