Table of Contents
What are the types of soil nailing?
Types of Soil Nailing techniques
- Drilled and grouted Soil Nailing method.
- Driven soil nailing method.
- Self drilling Soil Nailing method.
- Jet Grouted Soil Nailing method.
- Launched Soil Nail method.
What is the disadvantages of soil nailing?
Some of the potential disadvantages of soil nail walls are: Soil nail walls may not be appropriate for applications where very strict deformation control is required for structures and utilities located behind the proposed wall, as the system requires some soil deformation to mobilize resistance.
What are the materials used in soil nailing?
Soils which are particularly suited to soil nailing include clays, clayey silts, silty clays, sandy clays, glacial soils, sandy silts, sand, gravels. Soil nailing can be used on weathered rock as long as the weathering is even (i.e. without any weakness planes) throughout the rock.
How long do soil nails last?
Soil nailing has proven economically attractive and technically feasible when: The soil in which the excavation is constructed is able to stand unsupported in a 1- to 2-m (3- to 6-ft) high vertical or nearly vertical cut for one to two days.
Why do we use soil nailing?
Soil nailing is a remedial construction measure to treat unstable natural soil slopes or unstable man-made (fill) slopes as a construction technique that allows the safe over-steepening of new or existing soil slopes.
What is Ibo anchor?
CTS/Titan IBO® System utilizes a hollow, continuously threaded, steel bar that is equipped with a disposable bit that can drill through any soil or rock (similar to a “self tapping screw”) while grout is simultaneously injected through the hollow bore to flush out drills spoils and consolidate the surrounding soil or …
Is soil nailing an accepted technology?
Soil nailing is an accepted technology, the theoretical aspects of which are well understood and well reported in technical literature.
What is the history of soil nailing?
The first application of soil nailing was implemented in 1972 for a railroad widening project near Versailles, France. For corrosion protection, all steel components shall be galvanized. If machine threading after galvanization is unavoidable, then proper zinc based coating shall be applied onto the thread.
What is the water-cement ratio of the grout mix of soil nails?
For conventional soil nail, the water-cement ratio of the grout mix ranges from 0.4 to 0.5. The resistance at grout-soil interface of nail will significantly reduced when the grout shrink.
What is the hole size of corrugated pipe nails?
Typically, the hole size can range from 100mm to 150mm. The nail shall be prepared with adequate centralizers at appropirate spacing and for proper grount cover for first defense of corrosion protection. In additional to this, galvanization and pre-grouted nail encapsulated with corrugated pipe can be considered for durability.