Composite self-drilling soil nail and method
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United States of America Patent
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Mar 1, 2016
Grant Date -
Jul 1, 2010
app pub date -
Dec 23, 2009
filing date -
Dec 18, 2003
priority date (Note) -
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Abstract
A subsurface support comprises a soil nail having an outer member and an inner member placed within the outer member. By crimping the outer member or by use of an insert installed between the inner and outer members, a uniform spaced relationship can be maintained between the inner and outer members. In another embodiment, the support is made of composite construction materials, and the support has a self-drilling capability. The outer member may be made from fiberglass, and a metallic drill bit is secured to a distal end of the soil nail. The inner member is preferably steel. In yet another embodiment, the support includes a plurality of outer threaded members with adjacent outer members interconnected by a threaded coupler. A continuous inner member may be placed through the outer members. The inner member may be threaded for attachment to the outer members that also have internal matching threads.
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