Abstract: A screw pile is equipped with internal grout pipes extending downwardly through the bore of the tubular pile shaft. The grout pipes connect with side-opening ports in the shaft side wall, to form conduits through which fluid grout may be injected into the surrounding ground. The grout is injected at high pressure as the pile is rotatively driven into a sub-surface target formation in which the pile is to be landed. In this way, the grout is distributed along a vertical interval of formation. It has been shown that this technique is characterized by increased load capacities of the implanted pile, relative to piles implanted without grouting or with grouting but only at landed depth.

Abstract: A screw pile is equipped with internal grout pipes extending downwardly through the bore of the tubular pile shaft. The grout pipes connect with side-opening ports in the shaft side wall, to form conduits through which fluid grout may be injected into the surrounding ground. The grout is injected at high pressure as the pile is rotatively driven into a sub-surface target formation in which the pile is to be landed. In this way, the grout is distributed along a vertical interval of formation. It has been shown that this technique is characterized by increased load capacities of the implanted pile, relative to piles implanted without grouting or with grouting but only at landed depth.

Abstract: In a device, which is suspended from cables or other flexible or articulated structures, for the mixing in situ of earth for the formation of underground walls or diaphragms presenting in its lower part disaggregating means (1) for the disaggregation of the earth, above the disaggregating means are positioned correcting means (5, 13) for the direction of the excavation being able to rotate around substantially vertical axes.

Abstract: An anchor pile apparatus has a helical anchor rotatable by a power source through an intermediate drive member. The drive member extends through a plurality of hollow pile sections, which are driven, one by one, into the soil following the penetration of the anchor. In one of the embodiments, the anchor and the pile sections are rotated separately by independent motors, thus expediting the installation of the pile in the pre-determined location.

Abstract: This invention relates to a system and method for use in stabilizing different types of soils and/or creating anchorage and more particularly, to a system and method for injecting various types of solidifying material into a subsurface through a drilling apparatus during the drilling operation. The drilling apparatus may be removable and reusable used to create a micro or mini pile for soil stabilization, or alternatively it can be left in place to be used in conjunction with grout and similar materials for forming an anchor or load carry pier. A solidifying material swivel, a drive connector and a drilling apparatus, in combination are attached to a power drive unit. In one preferred embodiment, the drilling apparatus remains within the soil subsurface, encased in solidifying material. In another preferred embodiment, the drilling apparatus is removed leaving a homogenous pile of solidifying material behind.

Abstract: This invention relates to a method for installing anchorage apparatus used in stabilizing different types of soils and/or creating anchorage and more particularly, to a method for injecting various types of solidifying material into a subsurface through a anchorage apparatus during the drilling operation. The anchorage apparatus may be used in conjunction with grout and similar materials for forming an anchor or load carry pier. A solidifying material swivel, a drive connector and a anchorage apparatus, in combination are attached to a power drive unit such that after insertion, the anchorage apparatus remains within the soil subsurface, encased in solidifying material.

Abstract: A method of construction using sheet piling sections that includes the steps of: (a) installing a sheet piling wall in the ground to enclose a first area and a second area; (b) excavating a plurality of holes in the first area; (c) excavating the second area; (d) installing a plurality of first area structural supports; (e) leveling the first area; (f) forming a first floor in the first area; (g) excavating the first area to form a first area chamber; (h) leveling the bottom surface of the first area chamber; (i) forming a first area chamber floor; (j) repeating steps (g) through (i); (k) installing a plurality of second area structural supports; (l) forming a bottom floor in the excavated second area; (m) forming a ceiling above the bottom floor to form a second area chamber; and (n) repeating step (m) until a plurality of second area chambers are formed.

Abstract: A tool system is provided for aligning and plumbing a poured concrete form (e.g., a lower vertical form portion) for forming a structural column assembly of the type used for erecting building structures and the like, such as a concrete column or footing formed in situ in an earthen hole. The system includes a center line running vertical to the length of the tool and a two-way level system incorporated therein. The tool can be used to line up the lower vertical form portion with a layout string and plumb the lower vertical form portion square. A metering pole that can be locked in place is used to lower and raise the tool into and out of the lower vertical form portion, wherein the tool is completely rotatable about the metering pole. Once the lower vertical form portion is aligned with the tool, the earthen hole is back filled, thus holding the lower vertical form portion in place in the correct position.

Abstract: A construction process for the composite pile foundation which consists of the expanded belled base and the pile shaft, the construction process comprising the steps of: a) Aligning the pile tip at the pile location and place the casing at the top of the pile tip; b) Lifting the heavy hammer to enter the casing, repeatedly lift the heavy hammer to reach the given height and back press the casing, let it fall freely to ram the pile tip and the soil until a hole forms at the pile location; c) Lifting the heavy hammer higher than the feed inlet of the casing and fill solid material from the inlet into the casing; d) Ramming the above-mentioned solid material and repeat the filling and ramming operations; e) Controlling the penetration of the last three blows; f) Filling graded aggregate or stiff consistency concrete and repeatedly ram it to form the expanded belled base; g) pull out the casing; h) Aligning the pile shaft at the pile hole and repeatedly back press and blow slightly with the heavy hammer to drive

Abstract: A method and apparatus for stabilizing and lifting subsided slabs, flatwork, foundations of buildings or other structures, and, in particular, to the slab pier and bracket which are used in the repair and support of said subsided slabs, flatwork, foundations of building or other structures. The apparatus is advantageous in situations where extra support is needed for raising the subsided slabs, flatwork, foundations or buildings or other structures. In a specific embodiment, the subject method and apparatus can include a bracket, top piece, and pier column. In this embodiment, the subject apparatus can use these components as the means for lifting the subsided slab.

Abstract: An in-situ pile apparatus 10 includes a helical anchor to which a plurality of elongated generally cylindrically shaped sections can be added. Each of the sections has a specially shaped end portion for connecting to another section. An internal drive is positioned in sections inside the bore of each of the connectable pile sections. The internal drive includes enlarged sections that fit at the joint between pile sections. In one embodiment, the internal drive can be removed to leave a rod behind that defines reinforcement for an added material such as concrete. The rod also allows for a tension rod connection from the anchor tip to an upper portion attachment point.

Abstract: The invention is a reinforcement unit for reinforcing a footing element by laying a pile foundation with a foundation pile with at least one through-going longitudinal cavity and a method for placing the foundation pile and reinforcing a footing element with the reinforcement unit. The reinforcement unit includes at least one shaped and articulated reinforcement member that is pivotably connected to a centrally arranged, annular element, so that the reinforcement unit has a folded mounting position and an extended position of use, and is connected to the foundation pile by one or more tension members.

Abstract: A foundation member in the ground includes a soil working implement for loosening soil material in a soil area, a supply device for supplying a liquid to the loosened soil material and a mixing device for mixing the loosened soil material in the soil area with the liquid to form a settable suspension as well as a removal device for removing suspension from a first section of the soil area and a return device for returning at least part of the removed suspension to a second section of the soil area. A method for making a foundation member in the ground is also provided.

Abstract: A pier-repairing and reinforcing panel is used in a method of repairing and reinforcing a pier. The panel includes locking members, locking ribs, reinforcing ribs, and clips. The method includes the steps of: installing a watertight caisson around a pier and removing water from the gap between the caisson and pier. Impurities are removed from the pier's surface, and a plurality of panels are installed around the pier while sealing the junctions of the panels. A plurality of reinforcing steel bars are arrayed in the gap between the pier and panels, and the panels are then affixed to the steel bars or the pier using anchor bolts. The gap between the pier and the panels are then filled with concrete. The pier is effectively repaired and reinforced while separating the reinforced concrete from water, thus protecting the concrete and steel bars for a desired lengthy period of time.

Abstract: Apparatus and an associated method for forming a pier in a soil matrix includes a hollow tube with a restricted expansion section connected to and adjacent a soil penetrating bottom head element which is configured to facilitate discharge of pier forming material such as grout. An expansion device in the form of an expandable bladder or expandable mechanical device is positioned along a section of the length of the restricted expansion section. The hollow tube structure is inserted into a soil matrix with the expansion device in the retracted condition. Subsequently, the expansion device is expanded to enlarge the formed cavity in the soil matrix. Then grout or other pier forming material is injected into the cavity as the expansion device is retracted or deflated and as the hollow tube structure is raised incrementally to form a pier with one or more uniquely shaped lifts.

Abstract: Installation of support piers for a structure comprises the steps of positioning a hollow tube in a soil matrix followed by removal of soil from the hollow core, filling the core with an aggregate, subsequent raising and lowering of the hollow tube, compacting the aggregate by means of a mechanical device affixed to the bottom of the hollow tube to and also applying lateral forces to the aggregate against the walls of the cavity formed in the soil matrix, thereby pushing a portion of the aggregate laterally into the soil matrix.

Abstract: Apparatus to install small diameter columns of granular material in soil which includes rotating hollow shaft mandrel with external projections to aid mandrel advance into the soil and define the size of the cavity formed in the soil, the cavity being filled with granular material to form the column as the mandrel is withdrawn. The apparatus includes a storage hopper in the vicinity of its base, with the hopper sized to hold material to form more than one column, from which material is incrementally conveyed or pumped to a feed tank system which supplies granular material to the cavity along a flow path extending through the hollow shaft mandrel to produce the column. When a group of columns is required, as in a sand drain grid, the columns can be completed sequentially with reasonable continuity in the multiple column formation cycle.

Abstract: An in-ground lifting system and method are provided that is operable for raising a structure and its foundation at least several feet. In one presently preferred embodiment, the method is utilized to raise the structure above any anticipated flood levels to thereby prevent future flooding of the structure. In a preferred embodiment, a plurality of excavations are formed underneath the foundation, such as with a hydro-excavator. A sleeve with seal members and hydraulic lines is installed and aligned within each excavation. Hardenable material is poured outside the sleeve to form a cylinder. Hardenable material is poured inside the sleeve to form a piston. Fluid is pumped through the hydraulic lines to lift the structure and the foundation.

Abstract: A method of repairing and reinforcing a pier using stones. The method includes installing a watertight caisson around a pier and removing water from the gap between the caisson and pier prior to repairing the pier. The method can also include removing impurities from the pier's surface; arraying a plurality of reinforcing steel bars around the pier; laying stones outside the arrayed steel bars while fixing the stones to the steel bars or the pier, and filling the gap between the pier and the stones with concrete.

Abstract: There is provided a screwed steel pile, the end portion of which is open, characterized in that: an apparent resistance at the pile end portion of the pile is reduced when the ground strength is suddenly increased, so that the pile can be easily penetrated into the ground and an intensity of the finally obtained bearing capacity of the pile is high. The specific means is that a pile end portion of the pile body composed of a steel pipe or a hollow pipe made of another material is made open, and one or a plurality of wings are provided on the outside of the pile end portion of the pile body. The pile end portion of the wing may be protruded downward from a pile end face of the pile body.

Abstract: A structural pile assembly includes a driven pile and pressurized grout contained beneath the pile so as to exert an upward force on the pile. An enclosure, such as a bladder or bellows, is filled with grout from a reservoir via a conduit which preferably extends axially along the length of the pile and is left in place after the grout hardens. A pressure gauge measures the pressure of the grout within the enclosure, permitting the direct measurement of end bearing and side bearing capacities of the resulting pile assembly. The load bearing capacity of the pile is enhanced by the pressurized grout, and is preferably at least twice the end bearing capacity of an unpressurized pile.

Abstract: A system for the realization of caissons for containing concrete during capstan and which are due not to be removed in a following phase, includes: panels for containing the concrete, with air spaces or with spaces filled with insulating material; inserts for connection panels in vertical and horizontal direction, for hooking the caisson to the reinforced concrete and for controlling the position of metal reinforcements; containing squares that may be realized out of various materials with holes for hooking the panels during casting and for the perfect falling plumb of the pillars; connection rods for the squares; nails for fixing the rods and squares; at the end of the concrete casting the last components—nails, rods and squares are removed so as to be used again.

Abstract: Apparatus and an associated method for forming a pier in a soil matrix includes a hollow tube with a restricted expansion section connected to and adjacent a soil penetrating bottom head element which is configured to facilitate discharge of pier forming material such as grout. An expansion device in the form of an expandable bladder or expandable mechanical device is positioned along a section of the length of the restricted expansion section. The hollow tube structure is inserted into a soil matrix with the expansion device in the retracted condition. Subsequently, the expansion device is expanded to enlarge the formed cavity in the soil matrix. Then grout or other pier forming material is injected into the cavity as the expansion device is retracted or deflated and as the hollow tube structure is raised incrementally to form a pier with one or more uniquely shaped lifts.

Abstract: An in-situ pile apparatus 10 includes a helical anchor to which a plurality of elongated generally cylindrically shaped sections can be added. Each of the sections has a specially shaped end portion for connecting to another section. An internal drive is positioned in sections inside the bore of each of the connectable pile sections. The internal drive includes enlarged sections that fit at the joint between pile sections. In one embodiment, the internal drive can be removed to leave a rod behind that defines reinforcement for an added material such as concrete. The rod also allows for a tension rod connection from the anchor tip to an upper portion attachment point.

Abstract: A method and apparatus for stabilizing and lifting subsided slabs, flatwork, foundations of buildings or other structures, and, in particular, to the slab pier and bracket which are used in the repair and support of said subsided slabs, flatwork, foundations of building or other structures. The apparatus is advantageous in situations where extra support is needed for raising the subsided slabs, flatwork, foundations or buildings or other structures. In a specific embodiment, the subject method and apparatus can include a bracket, top piece, and pier column. In this embodiment, the subject apparatus can use these components as the means for lifting the subsided slab.

Abstract: A method and special mechanical apparatus for installation of support pier for structure comprises positioning a hollow tube apparatus in a soil matrix wherein the hollow tube apparatus has a hollow core and is susceptible to lateral and longitudinal movement, removing soil from the hollow core and then filling that core with an aggregate followed by raising and lowering of the hollow tube apparatus by means of a special bottom mechanical device in a manner which compacts the aggregate and also applies lateral forces to the aggregate against the walls of the cavity in the soil matrix, pushing a portion of the aggregate into the soil matrix.

Abstract: A method for casting a partially-reinforced concrete pile in the ground includes installing an elongate hollow tubular casing in a hole in the ground with an elongate portion of the hole extending downwardly beneath the lower end of the casing. Hardenable fluid concrete is conducted into the hole and casing so as to substantially fill the respective hollow cross-sections thereof. The concrete is permitted to reach a hardened state while the casing remains within the ground, thereby forming a concrete pile partially reinforced by the casing against side-loading in an upper portion of the pile.

Abstract: A circular concrete cap foundation poured in-situ within a perimeter forming corrugated metal pipe set atop or within an excavated pit and enclosing a series of circumferentially spaced pile anchors. The circular concrete cap foundation supports sets of inner and outer circumferentially spaced tower anchor bolts having their lower ends anchored to an embedded anchor ring and their upper ends projecting vertically and upwardly out the top of the circular foundation to engage the base flange of a supported tower. The pile anchors are formed with perimeter corrugated metal pipes set deep in subsurface soils with cementitious material surrounding and partially bonding to a centralized steel bolt or tendon which extends through the cap foundation. The tower anchor bolts and the pile anchor bolts are both partially encased in a PVC sleeve so that the bolts can be post-tensioned. The pile anchors are in tension only and serve to pull the cap foundation down to compress the underlying ground soils.

Abstract: A method for securing piling segments together to form a single foundation piling using an alignment securing assembly and vibrations sent through the piling as. Piling segments are driven into the ground on top of each other, forming a piling. A single piling passageway is formed when the piling segments are in alignment. An alignment securing assembly is placed in the passageway. Vibrations are sent through the piling so that grout will not gather in the upper portions of the passageway before the lower portions of the passageway are filled with grout. The grout cures and the piling segments are secured so that the segments will not slip. The alignment securing assembly uses an anchoring device that is lowered and set in the passageway so that tension can be applied by a cable. The tension from the cable and anchoring device causing a compressive effect on the piling.

Abstract: A method for constructing the foundation and support structure for an elevated transportation system, such as an elevated guideway for use in a light rail mass transit system. In particular, this invention discloses a method of constructing a tubular steel or other material-encased concrete foundation pile that also functions as a support pier. The method utilizes advanced surveying, mapping, and global satellite positioning for locating and constructing the monolithic foundation and support pier, thereby resulting in greater efficiencies and cost savings than traditional construction methods.

Abstract: The invention relates to a boring appliance for producing a concrete element in the ground with a vehicle on which are located a tower, a concrete pump and a boring tool, which is installed for introduction in the ground at the tower. By means of a concrete pump and a delivery line concrete is pumped into a cavity formed by the boring tool for forming the concrete element. According to the invention, the concrete pump is detachably held on the rear region of the vehicle, which is opposite a front area with the tower.

Abstract: The invention relates to a method for arranging a foundation pile in the ground using a ground displacement drill, wherein a hollow drill pipe with a ground displacement drill attached thereto are jointly introduced as a foundation pile, with the aid of a pile cap coupled to the hollow drill pipe, into the ground under axial pressure, whilst rotating, and wherein during the introduction into the ground, via a liquid supply extending through the pile cap and the foundation pile, a liquid medium is supplied through the ground displacement drill to the ground, and wherein, after the foundation pile has been arranged sufficiently deep in the ground, the pile cap is thereupon uncoupled from the foundation pile and retracted from the ground, leaving the foundation pile behind, wherein during retraction of the pile cap, liquid is supplied via the pile cap to the space formed between the pile cap and the foundation pile.

Abstract: A method and mechanical apparatus for installation of support pier for structure comprises positioning a hollow tube apparatus in a soil matrix wherein the hollow tube apparatus has a hollow core and is susceptible to lateral and longitudinal movement, removing soil from the hollow core and then filling that core with an aggregate followed by raising and lowering of the hollow tube apparatus by way of a bottom mechanical device in a manner which compacts the aggregate and also applies lateral forces to the aggregate against the walls of the cavity in the soil matrix, pushing a portion of the aggregate into the soil matrix.

Abstract: A process to make in-situ pilings comprised of soil, cement, lime and water, the pilings being bodies of revolution formed by rotating a mixer-cutter blade whose cutting diameter is selectably adjustable, preferably on a running basis so as to have the capability of producing piling with a diameter that differs from station to station.

Abstract: A pier system has a plurality of footers each formed with a base fabricated of concrete with a top face having a downwardly extending bore. A plurality of pilings are each formed with a hollow tubular shaft with a top region and a bottom region coupled to a footer. Each piling has a reinforcing bar with an upper region and a lower region coupled within the bore of a footer. Each piling further has a plurality of apertures formed within the upper region of each shaft. A deck has a plurality of stringers with spaced free ends located within the shafts. A supplemental quantity of concrete within each shaft couples the shafts, footers, reinforcing bars, and stringers. A plurality of planks have mechanisms that couple the planks to the stringers.

Abstract: The present application relates to a method of installing a pre-cast pile in the ground which involves applying an enlarged head forming tool to the ground until a volume of soil has been displaced or removed so as to form a void at the surface of the ground. The pre-cast pile is then driven into the ground to a predetermined depth below the void and the void is then filled with concrete or grout to form a cast-in-situ pile head. The diameter of the pile head is greater than the diameter of the pile shaft.

Abstract: A method for securing piling segments together to form a single foundation piling using an alignment securing assembly and vibrations sent through the piling as. Piling segments are driven into the ground on top of each other, forming a piling. A single piling passageway is formed when the piling segments are in alignment. An alignment securing assembly is placed in the passageway. Vibrations are sent through the piling so that grout will not gather in the upper portions of the passageway before the lower portions of the passageway are filled with grout. The grout cures and the piling segments are secured so that the segments will not slip. The alignment securing assembly uses an anchoring device that is lowered and set in the passageway so that tension can be applied by a cable. The tension from the cable and anchoring device causing a compressive effect on the piling.

Abstract: An improved method of making a foundation for a wind turbine comprises: a) forming a pit, b) providing a cylindrical open-bottomed steel can, c) lowering the can into the pit, d) accurately aligning the steel can, e) concreting the steel can in position in the pit, and f) back-filling the interior of the can.

Abstract: Apparatus to install small diameter columns of granular material in soil which includes a hollow shaft element advanced into soil, a storage hopper containing granular material at or near the base of the apparatus with an elongated system to move granular material to and through the hollow shaft element to fill the cavity formed in soil as the hollow shaft element is withdrawn to form each column. Granular material may be moved from the storage hopper to the hollow shaft element by conveyor, pumping, and by fluid under pressure. A feed tank may be positioned to initially retain granular material moved from the storage hopper and subsequently pass the granular material into and through the hollow shaft element to fill the cavity formed as the hollow shaft element is withdrawn from the soil.

Abstract: A system is provided for creating at least one conduit in a borehole formed in an earth formation. The system comprises a device which includes movement means for moving the device in longitudinal direction through the borehole, and injection means for injecting a hardenable substance into the borehole so as to form, for each said conduit, a layer of hardened substance in the borehole behind the device, said layer defining the conduit. The system further comprises control means for controlling the rate of injection of said substance by the injection means so as to correspond with the rate of movement of the device through the borehole by the movement means.

Abstract: An apparatus for lifting and stabilizing sunken or settled foundations, slabs, footings, etc. includes a lifting plate having a pipe section solidly secured thereto, for passing concentrically over the anchor pier used in such operations. The concentric lifting plate pipe precludes cocking or tilting of the plate relative to the anchor pier and foundation structure, thereby greatly improving the security of the lifting operation. As a result of the increased lifting plate stability provided by the present invention, only a single clamp is needed for securing the lifting assembly to the foundation. The clamp is adjustably positionable as required, to secure to a solid area of the foundation structure. The present system secures the plate to the pier using mechanical fasteners, thus precluding requirement for costly welding and other metal forming equipment. A method of raising or stabilizing a foundation or similar structure using the present apparatus, is also disclosed.

Abstract: A ground-boring apparatus for boring the ground within a casing tube, which is driven into the ground by a casing tube pusher machine to prevent the surrounding soil from collapsing into a to be formed hole. The soil removed by an extensible kelly bar to be suspended by a movable crane, a boring bucket attached to the lower end of the kelly bar, a supporting frame unit to be placed on the casing tube for holding the kelly bar rotatably about its vertical axis, hydraulic motors provided on the supporting frame unit for turning the kelly bar about its vertical axis, and clamping devices for joining the supporting frame unit and the casing tube.

Abstract: The present application relates to a method of installing a pre-cast pile in the ground which involves applying an enlarged head forming tool to the ground until a volume of soil has been displaced or removed so as to form a void at the surface of the ground. The pre-cast pile is then driven into the ground to a predetermined depth below the void and the void is then filled with concrete or grout to form a cast-in-situ pile head. The diameter of the pile head is greater than the diameter of the pile shaft.

Abstract: A method and special mechanical apparatus for installation of support pier for structure comprises positioning a hollow tube apparatus in a soil matrix wherein the hollow tube apparatus has a hollow core and is susceptible to lateral and longitudinal movement, removing soil from the hollow core and then filling that core with an aggregate followed by raising and lowering of the hollow tube apparatus by means of a special bottom mechanical device in a manner which compacts the aggregate and also applies lateral forces to the aggregate against the walls of the cavity in the soil matrix, pushing a portion of the aggregate into the soil matrix.

Abstract: An apparatus to install multiple small diameter columns in soil which includes a hollow shaft element to form a cavity in soil, a storage hopper to contain granular material at or near the base unit of the apparatus from which an elongated conveyor moves the granular material to a feed tank at the top of the hollow shaft element through which granular material passes as it is withdrawn from the soil to form each column of granular material. The storage hopper, the conveyor, the feed tank and the cavity forming element are arranged and move to successive column locations in a manner to permit granular material to be conveyed from the storage hopper to the feed tank without interrupting the advance and removal of the hollow shaft element from soil without rotation.

Abstract: A method of forming an in-situ void system including the steps of determining an expansion potential of soil adjacent to a structure and forming an array of voids in an area adjacent to the structure so as to accommodate the expansion potential of the soil. The array of voids is formed by drilling an array of holes beneath the structure or around a perimeter of the structure. The holes are drilled to a depth of the expansion potential. A liquid can be introduced into the voids so as to swell the soil. The top of the array of voids is covered prior to laying the foundation over the array of voids.

Abstract: A precast concrete beam element, used as a continuous bearing structural foundation member supporting wall and floor slab loads in soil, includes a bearing surface for spreading vertical loads into the soil and a wall section having a height sufficient to place the bearing surface at a specified bearing depth in the soil. The precast beam element also includes a formed-in notch to serve as a block ledge to facilitate weathertight wall installation. The beam element is manufactured offsite in a mold capable of changing dimension to cast elements with differing bearing heights and differing wall thicknesses as soil and loading conditions require.

Abstract: A tool for use with a rotatable drill shaft and a source of pressurized fluidized solidifying agent. The tool member has upper and lower extremities. A coupler is coupled to the upper extremity of the tool member and is adapted to be secured to the drill shaft. A plurality of radially extending arms are secured to the tool member intermediate the upper and lower extremities of the tool member. A plurality of forwardly and downwardly extending teeth are secured to each of the radially extending arms and are spaced apart longitudinally of the arms. A plurality of nozzles are carried by the tool member and are spaced circumferentially of the tool member and are coupled to the source of pressurized fluidized solidifying agent.

Abstract: A machine for making bored piles. The machine includes a vertical guide mast; a rotary drive head that is movable relative to the mast; and an auger having a hollow core and at least one helical blade. An extender tube has a bottom end that is secured to the top end of the auger, the drive head co-operating with the extender tube to rotate both the extender tube and the auger. A dip tube is slidably mounted in the hollow core of the auger and the extender tube, the dip tube having a top end connected to a concrete feed pipe. An annular actuator has a first end secured to the top end of the extender tube and a second end secured to the top end of the dip tube.

Abstract: A screw pier has an elongated shaft with a screw adjacent one end thereof. Soil displacing members are disposed on the shaft. The soil displacing members may be drawn through soil by turning the screw. A soil displacing member closer to the screw may be smaller than one or more soil displacing members farther from the screw. A driving tool may be provided for turning the screw.