A method and apparatus for forming cemented ground support columns is disclosed. Namely, driving mandrels are provided for the efficient construction of incrementally enlarged diameter support columns. For example, the driving mandrel includes a feed tube that has a top portion and an expansion head portion. The expansion head portion further includes an expansion (or compaction) chamber and a flexible tubular egress port. Further, construction methods are provided of using the driving mandrels for the efficient construction of incrementally enlarged diameter support columns.
E02D 5/38 - Concrete or concrete-like piles cast in position making by use of mould-pipes or other moulds
E02D 5/44 - Concrete or concrete-like piles cast in position making by use of mould-pipes or other moulds with enlarged footing or enlargements at the bottom of the pile
E04C 3/34 - ColumnsPillarsStruts of concrete or other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
E04C 3/36 - ColumnsPillarsStruts of materials not covered by groups or ColumnsPillarsStruts of a combination of two or more materials
E04G 13/02 - Falsework, forms or shutterings for particular parts of buildings, e.g. stairs, steps, cornices or balconies for columns or like pillarsSpecial tying or clamping means therefor
2.
Method and apparatus for forming cemented ground support columns
A method and apparatus for forming cemented ground support columns is disclosed. Namely, driving mandrels are provided for the efficient construction of incrementally enlarged diameter support columns. For example, the driving mandrel includes a feed tube that has a top portion and an expansion head portion. The expansion head portion further includes an expansion (or compaction) chamber and a flexible tubular egress port. Further, construction methods are provided of using the driving mandrels for the efficient construction of incrementally enlarged diameter support columns.
E02D 5/44 - Concrete or concrete-like piles cast in position making by use of mould-pipes or other moulds with enlarged footing or enlargements at the bottom of the pile
E04C 3/34 - ColumnsPillarsStruts of concrete or other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
E04C 3/36 - ColumnsPillarsStruts of materials not covered by groups or ColumnsPillarsStruts of a combination of two or more materials
E04G 13/02 - Falsework, forms or shutterings for particular parts of buildings, e.g. stairs, steps, cornices or balconies for columns or like pillarsSpecial tying or clamping means therefor
3.
Three-dimensional aggregate reinforcement systems and methods
Three-dimensional aggregate reinforcement systems and methods thereof stiffen aggregate layers, such as those used for pavement construction. The system may include a substantially planar grid connected to a plurality of projections that extend into a third out-of-plane dimension. The system may be a self-projecting three-dimensional aggregate reinforcement system including a substantially planar grid which is generally two-dimensional before use, and which project into the third out-of-plane dimension after compaction with aggregate. The system may also be a self-projecting three-dimensional aggregate reinforcement system including a substantially planar grid with a plurality of first and second movable portions, where the second movable portions are more flexible than the first portion and may extend vertically and laterally upon addition of aggregate. Further, a method may include positioning a three-dimensional aggregate reinforcement system on the ground, adding aggregate to the aggregate reinforcement system, and compacting the aggregate.
A maintainable soil drain and methods for using the maintainable soil drain for draining liquid away from structures, such as Mechanically Stabilized Earth (MSE) walls and earth slopes, are disclosed. According to an aspect, a maintainable soil drain includes a drainage pipe having multiple holes defined therein. The maintainable soil drain also includes a removable drain. Further, the maintainable soil drain includes an interior geotextile wrapping that substantially surrounds the removable drain.
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