Abstract: Provided are a pile joint, a pile coupling structure, and a pile coupling method that allow firm uniting of piles to be coupled. A joint (10) for coupling two piles (12) comprises: a tubular body (16) into which each pile (12) provided with a key (14) on a periphery thereof is inserted through an end (16A) of the body (16); and a fitting portion (22) formed on the body (16) so as to be fitted to the key (14) by the insertion and rotation of the pile (12). The fitting portion (22) is formed with: a tapered shape having a surface (22A) that is inclined so as to become distant from the end (16A) of the body (16) as the surface (22A) extends in the direction of rotation of the pile (12); or a wedge shape for fitting between a projection and a pile.

Abstract: There is disclosed a steel pipe pile with spiral blades which is capable of effectively improving comparatively soft ground in which a clay layer and the like are present at deep positions of several ten meters beneath the surface of the ground. A steel pipe pile 1 with spiral blades comprises a steel pipe pile main body 10 and one or more spiral blades 20 attached to the steel pipe pile main body 10, and a diameter D of the spiral blade 20 is set to three times or more as large as a diameter d of the steel pipe pile main body 10.

Abstract: A sacrificial tip and method of installing a friction pile within the ground includes a connective plate to attach to a friction pile, a smaller diameter pipe extending from the plate, and a plurality of gussets and a helical flight secured to the pipe. The pipe projects generally perpendicularly from the connective plate toward a penetrative aspect and the plurality of gussets are secured to and project radially outwardly from the pipe, and extend longitudinally along the pipe tapering radially inwardly from the connective plate toward the penetrative aspect. The helical flight is secured about the pipe and spirals longitudinally toward the penetrative aspect. The connective plate can be secured to the friction pile with the pipe projecting coaxially with the friction pile to define the sacrificial tip for the friction pile.

Abstract: A helical screw pile having a soil displacement device (lead displacement plate) on its shaft above at least one helical plate, which pulls the pile into the ground when the shaft is rotated. The lead displacement plate has a disk that carries at least two curved, axially extending bottom blades, which preferably extend beyond the disk periphery. The axial height of the blades preferably is greater than the axial pitch of the helical plate(s) divided by the number of blades. The top of the disk has an axially extending adapter ring that defines an annular seat for centering a tubular casing. Extension displacement plates can be used between extension shafts for centering additional tubular casings.

Abstract: Methods and apparatuses are disclosed for the rapid and precise removable installation of a substrate-penetrating device that facilitates underground delivery of various utilities to and/or from devices mounted thereon.

Abstract: A device for a pile anchorable in the bottom of a lake or sea and/or in the ground and of the screw- and/or push-type. The device includes a force-transmitting part arranged at an upper portion of a front tubular part of the pile. The force-transmitting part includes either a disk-shaped part with a substantially vertically extending flange directed toward the front tubular part, or a threaded portion along the pile that includes at least approximately one turn around and a cylinder-shaped part extending in a longitudinal direction of the threaded portion and completely around the threaded portion. The front tubular part includes apertures for debouching water and air from the upper portion. The force-transmitting part enables transmitting downwardly directed axial forces and laterally directed horizontal forces to the bottom or ground.

Abstract: A support platform for an oil field pumping unit includes a frame supporting the oil field pumping unit, vertical helical piles, and diagonal helical piles. The vertical helical piles are driven into the ground beneath the frame to support the frame and oil field pumping unit. Each diagonal helical pile has an upper end secured to the frame and a lower portion extending diagonally downward from the frame with a helical blade threaded into the ground to restrain horizontal forces exerted by the oil field pumping unit.

Abstract: Foundation equipment for a pole, in particular, or a lighting pole. The equipment includes at least one screw element adapted to be screwed into the ground; and at least one box-like body, mechanically fixed to the screw element. The box-like body is divided into two compartments by a partition wall. One compartment is adapted to receive the lower end of the pole.

Abstract: An improved transition coupling for a helical soil pile assembly transfers a compression load between two coupled shaft segments with little or no compression loading on the bolts that fasten the parts together. The coupling body has a shaft-receiving socket that extends axially into the body from one end to a socket bottom that axially abuts the end of one of the shafts. The body also has at least one shoulder between its ends that extends laterally outward and faces toward the end remote from the socket. A cylindrical portion of the body, which fits closely within the hollow end of the other shaft, extends axially toward the socket end up to the shoulder, which is adapted to abut the end of that shaft. At least one pair of aligned transverse holes in the body is adapted to receive a fastener.

Abstract: The embodiments provided herein are directed to a telescopic foundation screw piles with continuously tapered pile body that facilitates a faster pile placement speed, less labor and operators, less material, single step operation, low overhead clearance, no excess soils to be removed and hauled away which translates in lower cost and greater ease of use as well as higher load capacity.

Abstract: A cutting device for use with installation of helical ground anchors designed to cut through rock. The invention has carbide steel cutting tips attached to the distal end of a shaft extending below the end in order to make a first cut through rock along the axis of rotation of the shaft. Helically shaped plates are attached to the shaft at a distance above the shaft set of cutting tips. Attached along the outer edge of the helix are additional carbide steel cutting tips that extend below the bottom surface of the helix and cut along the axis of rotation of the shaft. The present invention allows for the installation of helical ground anchor supports at proper depths without deviation, in situations where the path is obstructed by rock or other hard materials.

Abstract: A helical screw pile includes a longitudinal shaft having a top end and a bottom end with a plurality of helical plates arranged on the shaft in increasing diameter from the top to the bottom. The largest diameter helical plate is located toward the bottom of the shaft. A second helical plate having a diameter smaller than that of the first plate is located above the first helical plate. A smaller third helical plate is located above the second helical plate so that the smallest is located toward the top of the shaft. The helical plates can be spaced apart along the shaft or coupled together in an end-to-end manner to form a continuous helix.

Abstract: An improved drill tip 110 for a foundation pile includes a soil penetrating body 112 depending from a pile attachment structure 114, the soil penetrating body having a plurality of circular stepped flights 116 formed in the shape of a descending continuous conic spiral and having a continuous spiral-shaped lower face 120 and a spiraling outer face 122, a spiral flight 124 extending radially from the lower end 126 of the outer face 122 in linear alignment with the lower face 120, and an upper flight 128 extending radially from the pile attachment structure.

Abstract: The subject matter disclosed pertains to an adjustable system for supporting a structure using a pile. The system has a pile with a helical flighting. The top of the pile has a threaded receptacle that receives a threaded bar of a bracket. The bracket may be rotated to adjust the height of the bracket and thereby adjust the position of the structure. The bracket includes holes for receiving fasteners for securing an attachment. The attachment, in turn, may connect to the structure.

Abstract: A steel pipe pile having pile bearing capacity without disturbing the surrounding ground during installation. The steel pipe pile including a first steel pipe pile that has a hollow steel pipe and a first helical fin on the outer periphery thereof from one end toward the other end at a constantly equal pitch; and a second steel pipe pile that has a hollow steel pipe and a helical fin on the outer periphery thereof from one end toward the other end at a constantly equal pitch and that is joined at an end to the other end of the first steel pipe pile, the pitch of the first helical fin and the pitch of the second helical fin being equal, and the first helical fin and second helical fin being continuous along an imaginary helix at the joint between the first steel pipe pile and the second steel pipe pile.

Abstract: Embodiments of a helical pile, comprising a shaft that is provided with an axis, a first end, and a second end, a lead located at the first end, a first plate that is attached to the helical pile, and a second plate that is attached to the first plate.

Abstract: An improved drill tip 10 for a foundation pile 28 includes a pile attachment structure 12 and a soil penetrating body 14 depending from the attachment structure, the soil penetrating body having a plurality of circular stepped flights 38 forming the shape of a descending continuous conic spiral and having a continuous spiral-shaped lower face 44 and an undercut outer face 46, the soil penetrating body including a lower end 48 having an inverted generally conical center structure 51 surrounded by a plurality of symmetrically distributed downwardly extending soil disturbing blades 52.

Abstract: A helical pier having a rock tip for rotational insertion into soil/rock and anchoring a structure thereto has an elongated shaft with a longitudinal axis, a penetrating end, a trailing end, and a peripheral surface between the penetrating end towards the trailing end. The penetrating end defines a penetrating edge of the shaft. A recess formed in the shaft extends from the first end surface toward the trailing end of the shaft, forms a recess wall and terminates in a second end surface that is obliquely inclined relative to the first end surface and the longitudinal axis. The recess wall defines a lateral cutting edge oriented transversely to the penetrating edge. In use, the recess receives soil/rock loosened by the penetrating edge and the cutting edge, and the second end surface directs loosened soil/rock out of the recess when the helical pier is rotated into the soil/rock.

Abstract: An elevated equipment assembly includes operating equipment situated atop a platform above grade. Piles are installed into the ground with free ends thereof extending above grade, and pile caps are coupled to the free ends of the piles. Each pile cap includes a cap plate disposed in a generally horizontal orientation. A platform is situated atop the pile caps and includes two longitudinally-extending structural beams and cross beams spanning between the two structural beams. Attachment members are secured to and extend outwardly from the outboard side of each structural beam. Each attachment member includes a generally flat attachment plate disposed in a generally horizontal orientation and secured to a cap plate of a pile cap.

Abstract: An apparatus and method for engaging a member within a soil formation. The apparatus comprises a shaft extending between top and bottom ends along a central axis and having at least one auger section therearound and a first plate, axially rotatably connected to the shaft. The apparatus may further comprise a second plate rotatably connected to the shaft above the first plate which may have connectors for engagement with a corresponding adjacent plate. The method comprises locating the shaft above a soil formation and rotating the shaft into the soil formation so as to draw the first plate into the soil formation.

Abstract: A drive tool for connecting a member to the drive tool of a drive tool assembly includes a flange connectable to the drive tool assembly. A wall has a first portion extending axially outwardly from the flange and defining a socket for receiving a first member. The wall has a second portion extending axially from the first portion of the wall and having a circumferential extent less than that of the first portion to facilitate receiving the first member by providing a laterally and axially open alignment opening. The first member can have a second portion extending axially further than a first portion and having a circumferential extent less than the first portion to facilitate connecting a second member to the first member by providing a laterally and axially open alignment opening.

Abstract: Disclosed are piling apparatus and methods for installing a reinforced concrete piling apparatus into the ground without the use of a pile driver or an auger. A helical screw anchor and coupling device are used to pull pipe sections into the ground. A preassembled reinforcing rod cage is placed into the pipe sections in the ground. Wet concrete is poured into the pipe sections to encase the reinforcing rod cage. The pipe sections are then removed. Removal of the pipe sections from the helical screw anchor is accomplished using the coupling device.

Abstract: A support platform for an oil field pumping unit includes a frame supporting the oil field pumping unit, vertical helical piles, and diagonal helical piles. The vertical helical piles are driven into the ground beneath the frame to support the frame and oil field pumping unit. Each diagonal helical pile has an upper end secured to the frame and a lower portion extending diagonally downward from the frame with a helical blade threaded into the ground to restrain horizontal forces exerted by the oil field pumping unit.

Abstract: Apparatus and methods for the installation of pipe pilings into the ground for use as structural building foundations, geothermal piles, or both, are disclosed. In addition to specialized fittings for pipe pile assemblies, the inventions include specialized drive mechanisms used in conjunction with rotary or vibratory motors. Methods of installing pipe pilings are further improved with the disclosure of methods of adding grout or similar materials during or after installation of the piles.

Abstract: Since the distal backside is provided on a rear side of a wing edge in an entering direction, when a steel pipe pile is rotationally driven into the ground, the distal backside resists against the rotation moment with the wing edge at the center. Thus, while avoiding the off-centered movement of the steel pipe pile and ensuring linearity, the steel pipe pile can be penetrated into the ground. Further, since a slanted opening is provided at a front side of the wing edge in the entering direction, soil excavated in accordance with the rotational drive into the ground can be smoothly introduced into the steel pipe pile body through the slanted opening. Thus, while restraining the ground resistance in accordance with the entering, the soil introduced into the steel pipe pile body can be pushed upward, thereby reducing an increase in the penetration resistance caused by clogging within the pipe.

Abstract: A helical screw pile includes a longitudinal shaft having a top end and a bottom end with a plurality of helical plates arranged on the shaft in increasing diameter from the top to the bottom. The first helical plate is located toward the bottom of the shaft and has the largest diameter. The second helical plate is located above the first helical plate and has a diameter smaller than that of the first plate. The third helical plate is located above the second helical plate and has a diameter smaller than that of the second plate. The helical plate with the smallest diameter is located toward the top of the shaft. The distance between the first helical plate and the second helical plate is larger than the distance between the second helical plate and the third helical plate.

Abstract: A foundation screw with a tubular basic body having an encompassing helical screw thread for screwing into the ground. The foundation screw has a substantially cylindrical first longitudinal portion and a tapering second longitudinal portion. The first longitudinal portion merges tangentially with a convex jacket region of the second longitudinal portion having a radius of convexity R1, which has at least one value of the tube diameter D of the first longitudinal portion.

Abstract: Excavation equipment for the construction of compaction piles includes a tool mounted at the end of a drilling rod; the tool is constituted by a shaft (10) provided on its end with digging teeth (12) and with at least a plate (14) for collecting debris rotating between an open position during the excavation and closed during the ascent of the tool. A screw (17, 18, 17?, 18?, 20); is of the type having at least two principles (17, 18, 20), in the upper part (20) fixed directly on the shaft (10) and in the lower part (17, 18) fixed on a cylindrical element (16) inserted on the shaft. A compactor (19) is positioned on the screw (17, 18) of the cylindrical element (16). The shaft rotates between two positions displaced between them, one corresponding to the excavation condition and the other to the ascent one; each of the at least two-principle screws of the shaft (20) constitutes the continuation of a corresponding screw (17, 18) of the cylindrical body (16) depending on the angular position of the shaft (10).

Abstract: A helical screw pile includes a longitudinal shaft having a top end and a bottom end with a plurality of helical plates arranged on the shaft in increasing diameter from the top to the bottom. The first helical plate is located toward the bottom of the shaft and has the largest diameter. The second helical plate is located above the first helical plate and has a diameter smaller than that of the first plate. The third helical plate is located above the second helical plate and has a diameter smaller than that of the second plate. The helical plate with the smallest diameter is located toward the top of the shaft. The distance between the first helical plate and the second helical plate is larger than the distance between the second helical plate and the third helical plate.

Abstract: A load bearing pile arrangement comprising a plurality of load bearing construction pile assemblies. Each comprises a pile provided with a support manifold at an upper end thereof. Each pile includes an outer tube and an inner tube between which, when the assembly is in use, provides a pathway for fluid pumped from above and down through the inner tube to a vortex manifold where the fluid swirls before passing upwards between the inner tube and the outer tube. The fluid also swirls as it passes upwards between the tubes and by at least one collar comprising an annular ring fixedly mounted on the tube the ring having helices, which cause the fluid to continue swirling as it passes upwards between the tubes and. In use, the load bearing pile arrangement can be used to recover heat from the surrounding ground; store heat in the surrounding ground; or, to store coolth, especially in a desert locality.

Abstract: A helical pier having a rock tip for rotational insertion into soil/rock and anchoring a structure thereto has an elongated shaft with a longitudinal axis, a penetrating end, a trailing end, and a peripheral surface between the penetrating end towards the trailing end. The penetrating end defines a penetrating edge of the shaft. A recess formed in the shaft extends from the first end surface toward the trailing end of the shaft, forms a recess wall and terminates in a second end surface that is obliquely inclined relative to the first end surface and the longitudinal axis. The recess wall defines a lateral cutting edge oriented transversely to the penetrating edge. In use, the recess receives soil/rock loosened by the penetrating edge and the cutting edge, and the second end surface directs loosened soil/rock out of the recess when the helical pier is rotated into the soil/rock.

Abstract: Piling, apparatus and methods for pouring a concrete piling in situ around pre-positioned reinforcing rods inside removable hollow pipe sections that have been screwed into the ground. A final coupler pipe section including a removable coupler device is releasably attached to a reducer section and helical screw anchor that are left in the ground. The pipe sections are connected end to end by helical flanges and are screwed into the ground using the helical screw anchor. Once the pipe sections are screwed into the ground to a desired depth, the coupler device is operated to release the coupler section from the reducer section and the coupler device is extracted from the pipe sections. Reinforcing rods are disposed inside the pipe sections and reducer section. Concrete is poured into the pipe sections and reducer section to encase the reinforcing rods. The pipe sections including the coupler section are then removed from the ground and reused.

Abstract: An improved transition coupling for a helical soil pile assembly transfers a compression load between two coupled shaft segments with little or no compression loading on the bolts that fasten the parts together. The coupling body has a shaft-receiving socket that extends axially into the body from one end to a socket bottom that axially abuts the end of one of the shafts. The body also has at least one shoulder between its ends that extends laterally outward and faces toward the end remote from the socket. A cylindrical portion of the body, which fits closely within the hollow end of the other shaft, extends axially toward the socket end up to the shoulder, which is adapted to abut the end of that shaft. At least one pair of aligned transverse holes in the body is adapted to receive a fastener.

Abstract: A building system that includes a plurality of screw piles (34, 36) positioned in the ground and one or more perimeter beams (16), wherein at least part of the perimeter beam (16) has a sloped lower surface (66, 68). The sloped lower surface of the perimeter beams (16) can divert swelling soils away from the perimeter beam (16). The swelling soils can be diverted into voids.

Abstract: A structural support device in the form of a push pier capable of use in high load-bearing capacity applications involving significant lateral load conditions, the push pier having a lead section with a ground penetrating friction collar, and one or more extension members that are machine fabricated with an integrally formed hardened alloy steel coupling section that is adapted to mate with the push pier lead section or another similarly constructed extension shaft. The hardened coupling section is formed of heat-treated and hardened alloy steel which is quenched and tempered to a yield and tensile strength substantially exceeding that of the main tubular shaft section to which it is connected, and inertia friction welded thereto.

Abstract: A bearing plate for use in an anchor assembly and associated method are provided. The bearing plate may have a body with a middle portion with a helical configuration about an axis. Leading and trailing portions are also included on either end of the middle portion. An upper leading portion surface may extend an angular distance from 5° to 45° about the axis. The upper leading and middle portion surfaces may extend at different rates in the axial direction per extension about the axis in order to reduce friction on the leading portion during insertion. Additionally or alternatively, the middle portion of the body may be tapered and/or included a rounded outer edge in order to reduce friction during insertion and/or to increase ease of manufacture. A method of putting together an anchor assembly in the field in order to achieve a desired bearing capacity is also disclosed.

Abstract: Embodiments of the subject invention pertain to a bi-directional testing method for use with a pile. One embodiment utilizes a helical pile central shaft divided into two sections. An expandable bi-directional testing apparatus that includes a sacrificial hydraulic jack, such as, for example, an Osterberg Cell®, that can be installed within the central shaft between the two sections. One or more tell tale rods can be attached to the bi-directional testing apparatus. During testing, expansion of the Osterberg Cell® causes the bi-directional testing apparatus to expand, which can result in movement of the one or more tell tale rods. The movement of the tell tale rods can be correlated to the force exerted by the Osterberg Cell® and provide information regarding the status load bearing capacity of the helical pile.

Abstract: A threaded termination for helical piles has an elongated shaft and a substantially square cross-section. A series of uniformly-spaced notches on the corners of the termination shaft are aligned to form partial threads around the termination shaft. A coupler on an end of the termination shaft has a socket with a substantially square cross-section. In use, a helical pile is initially screwed into the ground. The coupler of the termination is then attached to the upper end of the helical pile with the shafts of the termination and helical pile axially aligned. The assembly can then be screwed further into the ground by applying torque to the termination. The upper portion of the shaft of the termination can be cut off, as need, and a load transfer device is then threaded onto the upper end of the shaft of the termination.

Abstract: A socket wrench attachment (SRA) is connected by a circular array of bolts (28) connecting the mounting flange (30) to the rotary output member (22) on a rotary output shaft (20). The shaft (20) is a part of a rotary drive mechanism (12) which is mounted for longitudinal travel along a tower (14).

Abstract: A screw pile substructure support system is provided. In one embodiment, the invention relates to a screw pile substructure support system including a tubular pile having a centerline, wherein the tubular pile includes a first cylindrical section and a second cylindrical section attached by a weld, a pile tip including a first pile tip end attached to the tubular pile, an end plate having a substantially flat surface disposed perpendicular to the centerline of the tubular pile, a tapered portion disposed between the first pile tip end and the end plate, and a helical flight attached to an exterior surface of the tapered portion, wherein the helical flight extends along the exterior surface for a distance of at least one quarter of a circumference of the tapered portion, wherein the end plate is fixedly attached to the pile tip.

Abstract: A piling base apparatus, method for making same, a corresponding foundation pile system, and process for installation, the piling base apparatus having a generally solid body, a top end surface, a bottom end surface, and a side surface extending between the top end surface and the bottom end surface. The surface area of the bottom end surface is less than the surface area of the top end surface. At least one ridge extends generally about the side surface in a generally downward direction from the top end surface to the bottom end surface. Each ridge has an offset surface extending generally outward from the surface of the side surface. An end of a strand is fixed to the piling base apparatus, the strand extending outwardly from the top end surface.

Abstract: Disclosed is an anchor pile coupling system, consisting of a male and female pile coupling which can be attached to opposite ends of a piling, as well as a top drive which is used to apply rotational force to the piling string in order to guide it into the anchoring surface.

Abstract: The device includes the body (1), provided with a helix (3) on the bottom end, and of an ending (4) on the top part of the body (1). The diameter of the helix (3) is in the range of 1.0 to 100 times the diameter of the body (1) and/or of the least transversal dimension of the body (1). The body (1) has a closed or open profile on the cross section, with the body (1) having one profile at least. The pitch of the helix (3) is in the range of 0.1% to 90% with the pitch being linear or variable along the length of the helix and the length of the blade of the helix (3) being 5° at least of the circumference of the body (1) and the drilling base being provided with one helix (3) at least. On the bottom end, the body is provided with a pricker (2), with the pricker (2) being bevelled into one surface at least on the bottom end at the angel in the range of 90° to 0.1° towards the vertical axis of the drilling base and/or with the bottom end of the pricker (2) having a semi-spherical shape.

Abstract: The present invention relates to a screw pile comprising a shaft and at least two blades extending outwardly from the shaft. Each blade has a leading edge that contacts earth as the screw pile is screwed into the ground. The leading edge includes a swept back portion adapted to deflect rocks that come into contact with the swept back portion of the leading edge during insertion of the screw pile into the ground. In one embodiment, the leading edge of each blade includes two or more straight edge portions extending at different angles to each other. The straight edge portions may include an inner edge portion extending from the shaft and the swept back portion extending at an angle from the inner edge portion.

Abstract: A screw pile substructure support system comprises a tubular pile with a fixed conical tip having a helical flight thereon which draws the pile into a soil bed when a torque is applied to the pile. The tip has a substantially conical shape, and the largest diameter of the tip is substantially the same as the diameter of the tubular pile to which it is attached. The helical flight is attached to the outside surface of the tip. The tip may also be provided a point tip and one or more cutting teeth attached its surface.

Abstract: The present invention provides a system for adjusting a position of a post within a pile. The system includes a post including a vertical groove on one side and a vertical groove on another side for accommodating a sound wall panel. The system also includes a pile including a vertical bore into which the post is inserted. A set of three screws are spaced evenly around an exterior circumference of the post near a bottom of the post, wherein at least one screw contacts an interior circumference of the bore so as to adjust a position of the post within the bore. The system further includes a collar for fastening the post to a top of the pile at an opening of the bore.

Abstract: Piling, apparatus and methods for pouring a concrete piling in situ around pre-positioned reinforcing rods inside removable hollow pipe sections that have been screwed into the ground. A final coupler pipe section including a removable coupler device is releasably attached to a reducer section and helical screw anchor that are left in the ground. The pipe sections are connected end to end by helical flanges and are screwed into the ground using the helical screw anchor. Once the pipe sections are screwed into the ground to a desired depth, the coupler device is operated to release the coupler section from the reducer section and the coupler device is extracted from the pipe sections. Reinforcing rods are disposed inside the pipe sections and reducer section. Concrete is poured into the pipe sections and reducer section to encase the reinforcing rods. The pipe sections including the coupler section are then removed from the ground and reused.

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 bearing plate for use in an anchor assembly and associated method are provided. The bearing plate may have a body with a middle portion with a helical configuration about an axis. Leading and trailing portions are also included on either end of the middle portion. An upper leading portion surface may extend an angular distance from 5° to 45° about the axis. The upper leading and middle portion surfaces may extend at different rates in the axial direction per extension about the axis in order to reduce friction on the leading portion during insertion. Additionally or alternatively, the middle portion of the body may be tapered and/or included a rounded outer edge in order to reduce friction during insertion and/or to increase ease of manufacture. A method of putting together an anchor assembly in the field in order to achieve a desired bearing capacity is also disclosed.

Abstract: A bearing plate for use in an anchor assembly and associated method are provided. The bearing plate may have a body with a middle portion with a helical configuration about an axis. Leading and trailing portions are also included on either end of the middle portion. An upper leading portion surface may extend an angular distance from 5° to 45° about the axis. The upper leading and middle portion surfaces may extend at different rates in the axial direction per extension about the axis in order to reduce friction on the leading portion during insertion. Additionally or alternatively, the middle portion of the body may be tapered and/or included a rounded outer edge in order to reduce friction during insertion and/or to increase ease of manufacture. A method of putting together an anchor assembly in the field in order to achieve a desired bearing capacity is also disclosed.