Abstract: Described herein are apparatus, systems and methods useful in forming vertical structures.

Abstract: Described herein are apparatus, systems and methods useful in forming vertical structures.

Abstract: Described herein are apparatus, systems and methods useful in forming vertical structures.

Abstract: Described herein are tools, systems and methods for conditioning, strengthening and/or improving in situ soil geotechnical or agricultural properties while at least temporarily reducing soil density, energy requirements and tool wear.

Abstract: Described herein are tools, systems and methods for conditioning, strengthening and/or improving in situ soil geotechnical or agricultural properties while at least temporarily reducing soil density, energy requirements, and tool wear.

Abstract: Described herein are apparatus, systems and methods useful in forming vertical structures.

Abstract: Described herein are apparatus, systems and methods useful in forming underground vertical structures. Methods are described for constructing an underground vertical structure, comprising the steps of excavating soil to a sufficient depth to create a circular void to accommodate a plurality of segments; assembling a ring shaped structure comprising the plurality of segments; connecting the outside surface of the ring shaped structure with the soil in said circular void, thereby securing the ring shaped structure to the soil; excavating earth beneath the ring shaped structure to accommodate a second ring shaped structure; and repeating steps b-d thereby forming one or more additional ring shaped structures downward into the earth below already formed ring shaped structures until a predetermined depth is reached; thereby forming the underground vertical structure. Systems to perform the above methods are also disclosed.

Abstract: Described herein are tools, systems and methods for conditioning, strengthening and/or improving in situ soil geotechnical or agricultural properties while at least temporarily reducing soil density, energy requirements, and tool wear.

Abstract: Described herein are tools, systems and methods for conditioning, strengthening and/or improving in situ soil geotechnical or agricultural properties while at least temporarily reducing soil density, energy requirements, and tool wear.

Abstract: Described herein are apparatus, systems and methods useful in forming underground vertical structures. Methods are described for constructing an underground vertical structure, comprising the steps of excavating soil to a sufficient depth to create a circular void to accommodate a plurality of segments; assembling a ring shaped structure comprising the plurality of segments; connecting the outside surface of the ring shaped structure with the soil in said circular void, thereby securing the ring shaped structure to the soil; excavating earth beneath the ring shaped structure to accommodate a second ring shaped structure; and repeating steps b-d thereby forming one or more additional ring shaped structures downward into the earth below already formed ring shaped structures until a predetermined depth is reached; thereby forming the underground vertical structure. Systems to perform the above methods are also disclosed.

Abstract: Described herein are tools, systems and methods for conditioning, strengthening and/or improving in situ soil geotechnical or agricultural properties while at least temporarily reducing soil density, energy requirements, and tool wear.

Abstract: Described herein are tools, systems and methods for conditioning, strengthening and/or improving in situ soil geotechnical or agricultural properties while at least temporarily reducing soil density, energy requirements and tool wear.

Abstract: Described herein are shallow post tensioned foundation systems for mounting light to medium weight structures. Methods of installation are also described. The systems, apparatus and methods described can reduce waste, increase efficiency and reduce cost and installation/construction time.

Abstract: Described herein are apparatus, systems and methods useful in forming underground vertical structures. Methods are described for constructing an underground vertical structure, comprising the steps of excavating soil to a sufficient depth to create a circular void to accommodate a plurality of segments; assembling a ring shaped structure comprising the plurality of segments; connecting the outside surface of the ring shaped structure with the soil in said circular void, thereby securing the ring shaped structure to the soil; excavating earth beneath the ring shaped structure to accommodate a second ring shaped structure; and repeating steps b-d thereby forming one or more additional ring shaped structures downward into the earth below already formed ring shaped structures until a predetermined depth is reached; thereby forming the underground vertical structure. Systems to perform the above methods are also disclosed.

Abstract: Described herein are apparatus, systems and methods useful in forming underground vertical structures. Methods are described for constructing an underground vertical structure, comprising the steps of excavating soil to a sufficient depth to create a circular void to accommodate a plurality of segments; assembling a ring shaped structure comprising the plurality of segments; connecting the outside surface of the ring shaped structure with the soil in said circular void, thereby securing the ring shaped structure to the soil; excavating earth beneath the ring shaped structure to accommodate a second ring shaped structure; and repeating steps b-d thereby forming one or more additional ring shaped structures downward into the earth below already formed ring shaped structures until a predetermined depth is reached; thereby forming the underground vertical structure. Systems to perform the above methods are also disclosed.

Abstract: Described herein are tools, systems, and methods for trimming a soil face.

Abstract: Described herein are apparatus, systems and methods useful in forming underground vertical structures. Methods are described for constructing an underground vertical structure, comprising the steps of excavating soil to a sufficient depth to create a circular void to accommodate a plurality of segments; assembling a ring shaped structure comprising the plurality of segments; connecting the outside surface of the ring shaped structure with the soil in said circular void, thereby securing the ring shaped structure to the soil; excavating earth beneath the ring shaped structure to accommodate a second ring shaped structure; and repeating steps b-d thereby forming one or more additional ring shaped structures downward into the earth below already formed ring shaped structures until a predetermined depth is reached; thereby forming the underground vertical structure. Systems to perform the above methods are also disclosed.

Abstract: Described herein are tools, systems and methods for conditioning, strengthening and/or improving in situ soil geotechnical or agricultural properties while at least temporarily reducing soil density, energy requirements and tool wear.

Abstract: Described herein are apparatus, systems and methods useful in forming underground vertical structures. Methods are described for constructing an underground vertical structure, comprising the steps of excavating soil to a sufficient depth to create a circular void to accommodate a plurality of segments; assembling a ring shaped structure comprising the plurality of segments; connecting the outside surface of the ring shaped structure with the soil in said circular void, thereby securing the ring shaped structure to the soil; excavating earth beneath the ring shaped structure to accommodate a second ring shaped structure; and repeating steps b-d thereby forming one or more additional ring shaped structures downward into the earth below already formed ring shaped structures until a predetermined depth is reached; thereby forming the underground vertical structure. Systems to perform the above methods are also disclosed.

Abstract: Described herein are apparatus, systems and methods useful in forming underground vertical structures. Methods are described for constructing an underground vertical structure, comprising the steps of excavating soil to a sufficient depth to create a circular void to accommodate a plurality of segments; assembling a ring shaped structure comprising the plurality of segments; connecting the outside surface of the ring shaped structure with the soil in said circular void, thereby securing the ring shaped structure to the soil; excavating earth beneath the ring shaped structure to accommodate a second ring shaped structure; and repeating steps b-d thereby forming one or more additional ring shaped structures downward into the earth below already formed ring shaped structures until a predetermined depth is reached; thereby forming the underground vertical structure. Systems to perform the above methods are also disclosed.