Document Details

Document Number:
EI 05-026
Title:
Special Specification for Launched Soil Nail Slope Reinforcement
Status:
Inactive
Issue Date:
8/4/2005
Effective Date:
1/12/2006
Expiration Date:
1/7/2009
Resp Organization:
Geotechnical Engineering Bureau
Contact:
Randy Romer
Phone:
--
Email:
rromer@dot.state.ny.us
Item Numbers:
554.17----17,554.18----17,retaining wall,sloughing slope,cut slope,554.15----17,554.16----17
Drawings:
Keywords:
554.17----17,554.18----17,retaining wall,sloughing slope,cut slope,554.15----17,554.16----17
Shelf Notes:
No
Standard Book:
No
Superseded By:
(08-031) Revised Special Specification for Launched Soil Nail Shallow Slough Treatment
File:
EI 05-026
Abstract:
The special specification was created to provide designers with another option for stabilizing earth slopes that show evidence of localized surface failures. The installation of launched soil nails will improve or reinstate the strength and stability of the soil structure. Soil nails are long steel rods installed to reinforce or strengthen the existing ground. Recently, there has been development in the installation process which incorporates a tool utilizing compressed air to launch a soil nail into place. Applications of the installation method include the ability to work beneath most overhead utilities, a relatively rapid installation process, minimum ground disturbance, single-lane closure for mobilization, and installation from the top of the affected slope. The installation method is not appropriate for use in very compact soils or soils containing a significant quantity of boulders an/or cobbles. Underground utility markout is required to avoid damage by the installation process.