Tag: soil nail wall

Soil nailing is a construction technique that can be used as a remedial measure to treat unstable natural soil slopes or as a construction technique that allows the safe over-steepening of new or existing soil slopes. The technique involves the insertion of relatively slender reinforcing elements into the slope – often general purpose reinforcing bars (rebar) although proprietary solid or hollow-system bars are also available. Solid bars are usually installed into pre-drilled holes and then grouted into place using a separate grout line, whereas hollow bars may be drilled and grouted simultaneously by the use of a sacrificial drill bit and by pumping grout down the hollow bar as drilling progresses.

The Evolution of Retaining Walls

The Evolution of Retaining Walls

Editor’s note: This article first appeared in the November/December 2015 edition of Erosion Control.

Retaining walls have evolved over the past 20 years. The choice of different types of walls for a variety of situations has expanded. ­Knowing the strengths and advantages of each type is a crucial part of any project

Retaining Walls for Tough Spaces

Retaining Walls for Tough Spaces

Retaining walls have evolved over the past 20 years. The choice of different types of walls for a variety of situations has expanded. ­Knowing the strengths and advantages of each type is a crucial part of any project incor­porating walls. One type of wall might be the perfect solution for

Washout Repair with GeoGrids

Washout Repair with GeoGrids

Hanging With the Highflyers
Although a number of contractors performed the installation of the wire mesh, Henke notes, “Most of the wire mesh used for slope protection was provided by Maccaferri.” And because the slopes were so high, “We hung most of it by helicopter,” he adds.

“There were two or three

Keeping Slopes Aligned With Geogrid Technology

Keeping Slopes Aligned With Geogrid Technology

Whether seen in the gradual downslope movement of individual grains of sand dragged toward the ocean with each wave from the sea, or a mammoth mountainside boulder, triggered by the weight of a snowpack into a tumbling avalanche, slope instability is a process of nature.

More Trouble After the Fires

More Trouble After the Fires

“For days in 2012, we watched those white and gray clouds of smoke and wondered if we would lose our home, and now we dread seeing the dark rain clouds come up. Our town is still under threat because of floods that came after the fire,” says a resident of

Walls for Every Climate

Walls for Every Climate

Traveling along Madison Street, drivers in Sioux Falls, SD, can enjoy the view of the small but pretty manmade Covell Lake. The road bisects the lake, so the water is present on either side of Madison Street. The problem was that the lake was experiencing erosion along its north and

Holding Steady

Holding Steady

Weather can wreak havoc on slopes. Here and abroad, erosion control specialists are constantly working to shore up what weather events have shaken up. In some cases, slope stabilization is performed on new construction sites as a type of insurance policy against a weather event destroying the slope. In either

Residential Retaining Walls

Residential Retaining Walls

In days past, cast-in-place concrete was the basic option for retaining walls-not always pretty, and not always effective for the long-term, but useful for at least awhile. These days, the options are virtually limitless, with vendors offering a plethora of products, many of which are designed for unique situations. For

Strength for Less

Strength for Less

Despite a slowdown in the housing market, construction and development work is still going on throughout the United States in such sectors as commercial construction and transportation. Retaining walls often play a pivotal role in these projects. In three of the cases profiled here, they not only provided property protection,

The Changing World of Retaining Walls

Free time is scarce in early spring for Mark Thomas. And that’s just how he likes it. Late winter and early spring is when officials with the Bonneville Power Administration, the electricity generator PPL Montana, the US Bureau of Reclamation, and the US Army Corps of Engineers use Montana’s Kerr

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