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 system and method of determining lift deflection during construction of aggregate columns allows for real time monitoring of construction to ensure meeting defined parameters. The amount of deflection of a tamper head during tamping is determined multiple times for each lift. When the amount of deflection matches a predetermined value, tamping is stopped.

Abstract: A pier bracket comprises a metal bar having a plurality of bolt holes formed through a top half of the metal bar and a plurality of opposingly faced barbs extending from planar side surfaces in a lower half of the metal bar. The barbs are configured to provide asymmetrical resistance force to movement of the pier bracket when received within an aperture formed in a concrete pier or footing.

Abstract: The invention relates to a device for producing vibrations, particularly for fastening to ramming bodies, which are rammed into or pulled out of a burrow by said vibrations, comprising at least two balancing weights (15, 16) rotating in opposite directions in a synchronized manner and rolling on a track and driven by separate shafts. According to the invention, the track is a bearing ring (32) that is fitted into the housing, wherein said bearing ring is made of rolling bearing steel that has a hardness of HRC?50.

Abstract: Extensible shells and related methods for constructing a support pier are disclosed. A shell can define an interior for holding granular construction material and define an opening for receiving the granular construction material into the interior. The shell can be flexible such that the shell expands when granular construction material is compacted in the interior of the shell. A method may include positioning the shell in the ground and filling at least a portion of the interior of the shell with the granular construction material. The granular construction material may be compacted in the interior of the shell to form a support pier.

Abstract: A method and apparatus for mounting a column/pile in an upstanding position on a supporting surface comprising the steps of lowering the column/pile to be installed from a support vessel into contact with the supporting surface, using the lower/toe end of the column/pile as a drill such as to form a bore in the supporting surface into which the lower region of the column/pile is to be located and leaving the column/pile in situ in the bore after the completion of a drilling operation.

Abstract: Designs and methods for a modular foundation provide a strong and secure foundation in a time efficient and cost efficient manner. The modular foundation can include a cap structure having one or more pile guides coupled together. The modular foundation can further include piles that extend through the pile guides and into the ground. The cap structure and pile guides can be configured to use both vertical and angled piles. A plurality of connectors can connect the cap structure to the piles. The resulting foundation can be used to support various superstructures.

Abstract: An apparatus for drilling the ground, in particular for the installation of foundation piles, includes a drilling turret (2) with a vertical guiding antenna (3), a rotary head for driving drilling batteries including a continuous ground drilling rotary propeller (5) housed inside at least one covering tube (7). A inner drive is adapted to drive said propeller (5), and a second external drive is connected to the tube (7) and allowing movement thereof, a driving cab (8) for an operator, which includes all the manipulators for operating the machine and the systems for displaying measured parameters. The apparatus further includes a system for controlling the excavation parameters, which is enabled to receive information from the drilling parameter control sensors.

Abstract: Disclosed is a construction method of a cellar for a building completed. The construction method includes fixing supporting structures to bottom concrete of the building; installing a press-in machine on the supporting structures; inserting posts for supporting the building into the foundation under the building by inserting hollow piles into the holes to then insert the piles into the underground using the press-in machine, stacking new piles on the inserted piles, and sequentially inserting the piles using the press-in machine; excavating a foundation under the bottom concrete of the building to prepare an underground space when the building is supported by the posts; and placing the concrete on the horizontal and vertical faces of the underground space prepared by the excavating the bottom concrete of the building.

Abstract: A system for installing an array of pilings for an array of solar panels is highly accurate and efficient. The system includes a horizontal laser and a rotating vertical laser that are mounted on a first piling and aligned with a target on a second piling on the opposite side of the array. An alignment template is placed against a piling and aligned with the vertical rotating laser. The aligned template provides a designated location where the next piling is driven. A hammer target on the pile driver allows the installer to precisely install the next piling. After installation, the next piling is measured for accuracy and if errors are found, an alignment bracket is used to correct the error. The process is repeated until the array of pilings is complete.

Abstract: The instant disclosure relates to a system and method of constructing drilling and production platforms useful in remote, inaccessible and/or environmentally sensitive operating environments. According to one aspect of the invention, an arctic drilling platform is provided wherein various methods and means of interlocking neighboring platform modules are provided. Means for sealing the intersections formed between a plurality of interlocked platform modules are also disclosed. Other aspects comprise improved platform floor plans, with various wellhead cellar layouts and sealing means also being described. Methods and means of enhancing the usefulness of modular storage platforms are disclosed, and a number of support post installation and removal techniques are also provided. Also taught are methods and means of adjusting the height and level of an assembled drilling platform, and for adding extension members to extend the length of a support post as needed during installation, maintenance or operations.

Abstract: A method of raising a building structure (1) with respect to the ground (2); the method including the steps of: forming a mat (7) having a number of through holes (12), each surrounded by a number of upward-projecting ties (16); inserting a foundation pile (9) through each hole (12); attaching to each foundation pile (9) a lifting device (11), which on one side rests on the top end of the foundation pile (9), and on the other side is secured to the corresponding ties (16) which act as reaction members; exerting thrust on the foundation piles (9) by means of the lifting devices (11) to lift the building structure (1) with respect to the ground (2); dividing lift of the building structure (1) into a succession of lift steps; establishing a predetermined lift value for each lift step; and, at each lift step, operating each lifting device (11) to expand the lifting device (11) by exactly the predetermined lift step value.

Abstract: A pile driving system adapted to be supported by a movable arm assembly to drive a pile comprises an engaging system, a suspension system, a vibratory system, a first clamp assembly, and a second clamp assembly. The engaging system operates in a first mode in which the first clamp assembly rigidly connects the secondary housing to the pile, a second mode in which the second clamp assembly rigidly connects the secondary housing to the pile, a third mode in which the second clamp to assembly rigidly connects the secondary housing to the side portion of the pile, and a fourth mode in which the tip portion of the at least one pick member engages at least one sheet pile of a substantially horizontal stack of sheet piles to remove the at least one sheet pile from the stack of sheet piles.

Abstract: The invention relates to a base structure for an off-shore wind power installation having a plurality of base piles wherein each base pile has a driving pile which is guided in its interior at least portion-wise for anchoring in the seabed, and at least one support structure for mounting a pylon of a wind power installation, wherein the support structure connects the upper ends of the base piles together. Furthermore the base pile and the driving pile have a region of an overlap on a predetermined lengthwise portion, wherein in the overlap region of the piles the gap between the piles and in part beneath and above the overlap region the free internal cross-section of the piles are filled with a hardening filling material. The invention also relates to a method of erecting a base structure for an off-shore wind power installation and an aligning tool.

Abstract: A device for driving and extraction of sheet piles into or from the ground, respectively, has a leader on which an exciter cell is guided. The exciter cell is coupled with an advancing system by way of which it can be moved in linear manner. The exciter cell is rigidly connected with at least one guide element that is exclusively guided on the leader and elastically connected with the advancing system.

Abstract: In an embodiment, a hydraulic jack is provided having a first portion and a second portion. The first portion attached to a first section of a structure and the second portion attached to a second section of the structure. When a pressurized fluid is forced between the first portion and the second portion, a load is transferred to the first section and the second section by the pressure of the fluid on the first portion and the second portion. The first section and the second section are forced apart by the load, thus creating or enlarging at least one void in the structure. The pressurized fluid fills or partially fills one or more of the at least one void, thereby increasing the surface area effectively normal to the direction of the load in contact with the pressurized fluid.

Abstract: A primary earth penetrating mandrel formed of a hollow shell steel plate octagonal in cross-section has an upper end and a blunt lower end joined by an upwardly and outwardly tapered wall. The mandrel is driven down in the earth to simultaneously form a vertical tapered cavity while compacting the sidewall of the cavity to provide structural integrity. The mandrel is then moved upwardly from the bottom of the cavity and aggregate is deposited in the bottom of the cavity then the mandrel is lowered so that its blunt lower end densifies the aggregate by vertical vibratory action and static force and repeating these until the pier top is near the surface of the earth at which time the upper aggregate portions are densified by the primary mandrel or a secondary mandrel having a substantially larger lower end surface than the lower end surface of the primary mandrel.

Abstract: A system and method of determining lift deflection during construction of aggregate columns allows for real time monitoring of construction to ensure meeting defined parameters. The amount of deflection of a tamper head during tamping is determined multiple times for each lift. When the amount of deflection matches a predetermined value, tamping is stopped.

Abstract: Embodiments provide an apparatus and methods for providing a nonlabor-intensive process for preventing backfill entering, or environmental factors eroding, a cavity formed in the ground. Preventing cavity degradation involves constructing a chemically-inflatable bag that separates two or more chemical reactants by creases and cylindrical coils formed in the chemically-inflatable bag. The creases typically act as watertight releasable seals that separate the chemical reactants while the cylindrical coils resist unintentional compromise of the releasable seals. However, the cylindrical coils are designed to give way upon the user applying an unfurling action on the chemically-inflatable bag; thus, furnishing a passageway for the chemical reactants to intermix and initiate a chemical reaction. The chemical reaction produces carbon dioxide as a by-product, which expands the chemically-inflatable bag from a collapsed condition to an inflated condition.

Abstract: A base for holding a wind turbine tower is disclosed. The base includes individual shaft piles, a base cap and anchoring units. The base cap includes reinforcement inserts and is connected to each of the individual shaft piles. The anchoring units are embedded in the base cap and extend in an anchoring direction from the base cap at anchoring locations for anchoring the wind turbine tower to the base cap. Each of the reinforcement inserts extend in a radial direction relative to a center axis of the wind turbine tower. At least one of the plurality of reinforcement inserts, at a radius of the center axis adjacent to an anchoring location of a respective anchoring unit, has a portion of the respective reinforcement insert extending along the anchoring direction.

Abstract: A telescoping leader system for a construction machine that includes a set of leads having a series of internal nesting segments and an extending means connecting one segment to another segment to allow for the extension of the segments one after the other to an extended position and the retraction of the segments to an internal nesting position. The telescoping leader system further includes a surface engaging member mounted within the set of leads and a pivotable mounting assembly mounted to the set of leads and adapted to adjust the position of the set of leads. A quick connecting means adapted to engage the pivotable mounting assembly is included to allow for the quick engagement and disengagement of the construction machined from the set of leads.

Abstract: A Control System for monitoring the flow of air in a high capacity column delivery device, wherein a programmable logic controller, uses one or more sensors for sensing changes in air pressure and an air flow in a system to ensure one or more chute continuously and uniformly discharge a material; the programmable logic controller is connected to the system having; one or more sensors and a compressor which is mechanically connected to the system to supply the air to each chute through an air hose, which is necessary in order to assist the material to travel down a pipes and into the chute and out at a tip of a vibratory probe mechanism; the system further comprises at least one air hose directed downwardly in each chute to prevent any blockage of the material; wherein the programmable logic controller monitors the flow of air and pressure of air in the system through the use of these signals and electronically decides an appropriate reaction by sends a signal to the valve and air hose; when a blockage occurs

Abstract: A jetting system for installing foundation underpinning is disclosed. In some embodiments, the jetting system includes a pile having one or more pile segments, an elongated reinforcing tubular member, and a jetting tube. Each of the one or more pile segments includes a throughbore passing axially through the head and the trunk. The throughbores of the one or more pile segments are vertically aligned forming a passage through the pile. The elongated reinforcing tubular is disposed within the passage, and the jetting tube is inserted into the reinforcing tubular.

Abstract: Described herein are various embodiments of a tower foundation system for an above-ground tower. For example, according to one representative embodiment, a tower for supporting a structure above the ground includes a foundation and a second support column section. The foundation includes a first support column section and a plurality of arms that extend radially outward away from an outer surface of the first support column. Additionally, the foundation includes a plurality of elongate anchors coupled to the plurality of arms. The first and second support column sections include each include a plurality of engagement elements engageable with each other to splice the first and second support column sections together. More specifically, the second support column section is insertable into and rests upon the first support column section such that the plurality of engagement elements engage each other.

Abstract: A concrete pile installation apparatus includes a pile clamping unit having stop plates arranged at different elevations and hand wheel-controlled clamping blocks disposed corresponding to the stop plates and operable to clamp concrete piles for installation and rollers that facilitate adjustment of the position of concrete piles, and two racks that use hydraulic cylinders to support the pile clamping unit and to adjust the elevation of the pile clamping unit and the clamped concrete piles.

Abstract: A circular pile head assembly that can facilitate the driving of the underpinning pile in a slab using a pile driving machine and locking-off the slab load to the underpinning pile is provided. A circular pile head assembly consists of the twin beam, the circular pile head and a section of an underpinning pile that is used in conjunction with a pile driving machine to drive, and lock-off the slab load to the underpinning pile.

Abstract: Methods and apparatus for foundation systems generally include a vertical support. a horizontal support configured to couple to the vertical support, and a composite material configured to couple to the horizontal support. The vertical support may be configured to resist fluctuation in soil elevation. The composite material may comprise a block material and a fibrous material.

Abstract: An apparatus and method for the subterranean support of underground conduits is disclosed, including a pile driver that is configured to connect to an articulated boom of an excavator or another unit of positioning machinery to insert a section of curved sheet pile beneath a conduit. In one exemplary embodiment, the pile driver has a head portion and a body portion. The head portion of the pile driver is connected to the excavator and the body portion of the pile driver is moveable relative to both the head portion of the pile driver and the excavator to allow the pile driver to properly orient a section of curved sheet pile for insertion into subterranean material beneath an underground conduit.

Abstract: A device is described for a foundation to be placed in a sea bed, comprising a housing-formed, downwardly open, coat-forming construction set up for placing in the sea bed, said construction comprises a top part, and the top part comprises an extended hollow body (140) that stretches a distance into the inside of the construction. The invention is characterised in that the length of the inner pipe is shorter or longer than the length of the coat. When the inner pipe is shorter, its length is of the order of 10-90% of the length of the skirt 10, preferably 25 to 60%, and most preferred 50%. When the inner pipe is longer, its length is more than 100% and up to 300% of the length of the outer coat (10), preferably 150 to 200% and most preferred 300%. A method and different applications are also described.

Abstract: An air-cooled condenser system (1) comprises a platform (2) carrying heat exchanger elements (4), steam distribution lines (6), and fans (5). The platform (2) is arranged on pillars (3), which previously are introduced into the soil beneath the platform. The platform (2) is mounted close to the ground, wherein the intake chamber (21) required beneath the platform (2) is formed by removing soil beneath the platform (2). In this way, the platform (2) can be mounted at low height and with little effort.

Abstract: A concrete pile installation apparatus includes a pile clamping unit having stop plates arranged at different elevations and hand wheel-controlled clamping blocks disposed corresponding to the stop plates and operable to clamp concrete piles for installation and rollers that facilitate adjustment of the position of concrete piles, and two racks that use hydraulic cylinders to support the pile clamping unit and to adjust the elevation of the pile clamping unit and the clamped concrete piles.

Abstract: The invention relates to a method of installing foundation elements, in particular (mono)piles (2), in an underwater ground formation (3), by means of a driver (4), comprising the steps of placing a foundation element (2) on the underwater ground formation (3) and holding the foundation element (2) in place by means of a gripper (10) mounted on a surface vessel, placing a sleeve (6) for reducing noise input from the driver (4) about the foundation element (2), disengaging the gripper (10), lowering the sleeve (6) onto the ground formation (3), and placing the driver (4) on top of the foundation element (2). The sleeve (6) is held at least laterally with a guide (11) mounted on the surface vessel, at least when disengaging the gripper (10).

Abstract: A pile driving system for driving a pile comprising a support system comprising an arm assembly, an engaging system comprising a primary housing and a secondary housing, a suspension system, a vibratory system, and first and second clamp assemblies. The first clamp assembly rigidly connects the secondary housing to the pile. The second clamp assembly rigidly connects the secondary housing to the pile. The second clamp assembly rigidly connects the secondary housing to the side portion of the pile. The tip portion of the at least one pick member engages at least one sheet pile of a substantially horizontal stack of sheet piles to remove the at least one sheet pile from the stack of sheet piles. The pile driving system drives the pile using at least one of a driving force generated by the support system and a vibrational force generated by the vibratory system.

Abstract: An equipment for constructing micropiles in soil, includes a drilling rod with a bit with at least one nozzle jetting fluid forward, and at least one nozzle jetting fluid substantially orthogonal; an element pulling a protective tube, not adhering to the rod. A corresponding method includes drilling with a drilling rod jetting liquid in front of the bit until reaching stable soil strata; drilling and injecting high-pressure grout with one or more lateral nozzles, while the drilling rod rotates; pulling the protective tube, the tube being inserted to the area of grout injection; when the required depth is reached, the proximal end of the drilling rod is anchored to a plate; when the grout is consolidated, traction is applied to the drilling rod if necessary. Grout is injected into the protective tube.

Abstract: In an embodiment, a hydraulic jack is provided having a first portion and a second portion. The first portion attached to a first section of a structure and the second portion attached to a second section of the structure. When a pressurized fluid is forced between the first portion and the second portion, a load is transferred to the first section and the second section by the pressure of the fluid on the first portion and the second portion. The first section and the second section are forced apart by the load, thus creating or enlarging at least one void in the structure. The pressurized fluid fills or partially fills one or more of the at least one void, thereby increasing the surface area effectively normal to the direction of the load in contact with the pressurized fluid.

Abstract: A primary earth penetrating mandrel formed of a hollow shell steel plate octagonal in cross-section has an upper end and a blunt lower end joined by an upwardly and outwardly tapered wall. The mandrel is driven downwardly in the earth to simultaneously form a vertical tapered cavity while compacting the sidewall of the cavity to provide structural integrity. The mandrel is then moved upwardly from the bottom of the cavity and aggregate is deposited in the bottom of the cavity following which the mandrel is lowered so that its blunt lower end engages the deposited aggregate and densifies the aggregate by vertical vibratory action and static force with these steps being repeated until the pier top is near the surface of the earth at which time the upper aggregate portions are densified by either the primary mandrel or a secondary mandrel having a substantially larger lower end surface than the lower end surface of the primary mandrel.

Abstract: A prefabricated concrete pad having embedded anchoring stud assemblies and anchoring tabs for receiving anchoring stakes therethrough. The studs are preferably notched to cause the studs to break-away during higher speed vehicle impact. During lower speed vehicle impact, the studs stay intact and the concrete pad will tilt thereby allowing the mailbox/sign to move thus reducing the potential damage.

Abstract: A method and apparatus for forming a support aggregate pier having compacted aggregate lifts in a soil matrix, includes an elongate, hollow tube with a bulbous leading end bottom head element that is forced or lowered into the soil matrix. The hollow tube includes a mechanism for releasing aggregate from the lower head element of the tube as the tube is lifted in predetermined increments. The same hollow tube is then lowered or pushed in predetermined increments to vertically compact the released aggregate in thin aggregate lifts, while forcing a portion of the compacted aggregate transaxially into the soil matrix at the sidewalls of the cavity. The process may be repeated to form a series of compacted aggregate lifts comprising an aggregate pier or the process may include forming only a single lift for the aggregate pier while densifying adjacent matrix soils and imparting lateral stress in these soils.

Abstract: A piling driver (1) to drive a high capacity and maximum continuous length of underpinning pile (61, 62) of at least equal to the clear floor height of a building. The modular piling driver (1) can be assembled on site to drive a pile into the ground within a small confined space under a limited head room comprising of; an underpinning pile (61, 62), a clamping block (2) with horizontal hydraulic clamps (25, 29), a thrust block frame structure (3) with a C-shaped horizontal beam (34) supporting a pair of vertical hydraulic jacks' (4) with corresponding rams (43) that drives the clamping block (2) along the two vertical holding frame members (5) which is supported by a pair of upper and lower locking pins (54) on to the parallel beams (7) that will bear against the soffit of the foundations (8).

Abstract: A method for deploying a deepwater mooring spread from a floating vessel with a bow, stern, hull, deck, and aft crane secured to a port side or a starboard side of the hull having a hold, and a fore crane secured to the port side or starboard side of the hull. To lower heavy suction piles or other structures to almost unlimited water depths, the crane tackle after a depth of approximately 1000 meters is replaced using the polymer lines as a temporary lifting pennant with almost neutral buoyancy and therefore no extra weight is added to the lifting tackle of the crane.

Abstract: A pile guide for supporting a pile as it is driven into a substrate, comprises: a base frame having a planar substrate-engaging surface; and a pile guide member mounted on the base frame, the pile guide member being configured to guide a pile in a predetermined direction therethrough as it is driven into a substrate. The pile guide member is pivotally mounted on the base frame, with pivotal movement of the pile guide member varying the predetermined direction relative to the planar substrate-engaging surface of the base frame.

Abstract: Method of installing a bucket foundation structure comprising one, two, three or more skirts, into soils in a controlled manner. The method comprises two stages: a first stage being a design phase and the second stage being an installation phase. In the first stage, design parameters are determined relating to the loads on the finished foundation structure; soil profile on the location of installation; allowable installation tolerances, which parameters are used to estimate the minimum diameter and length of the skirts of the bucket. The bucket size is used to simulate load situations and penetration into foundation soil, in order to predict necessary penetration force, required suction inside the bucket and critical suction pressures, which penetration force, required suction, and critical suction pressures are used as input for a control system in the second stage, in which second stage the parameters determined in the first stage are used in order to control the installation of the bucket.

Abstract: A pile driver for driving foundation piles, and having: a frame, in turn having a horizontal base, at least one upright extending upwards from the base, and a movable body which slides along the upright; a first lock device fitted to the horizontal base and which, in use, rigidly engages a connecting member of a foundation structure; a second lock device fitted to the movable body and which, in use, rigidly engages a shaft of a pile to be driven; and at least one hydraulic jack connected to the frame and to the movable body to move the movable body along the upright.

Abstract: The instant disclosure relates to a system and method of constructing drilling and production platforms that are particularly useful in remote, inaccessible and/or environmentally sensitive operating environments. According to one aspect of the invention, an arctic drilling platform is provided wherein various methods and means of interlocking neighboring platform modules are provided. Methods and means for sealing the intersections formed between a plurality of interlocked platform modules are also disclosed. According to further aspects of the invention, improved platform floor plans are provided, and various wellhead cellar layouts and sealing means are also described. Methods and means of enhancing the usefulness of modular storage platforms are disclosed, and a number of support post installation and removal techniques are also provided.

Abstract: The present invention is directed to a pile driver with a lead that is capable of receiving and supporting a pile in a substantially horizontal orientation and subsequently rotating the lead and received pile from the substantially horizontal orientation to a substantially vertical orientation needed before the pile can be driven into the earth. In one embodiment of the pile driver, the chassis is of a relatively short length to be more maneuverable and the lead is capable of supporting a long and/or quite massive pile. To prevent the chassis, lead, and pile from tipping or being placed in an unstable condition, the pile driver further comprises a movable counterweight system. The method is also directed to methods of using such a pile driver to accomplish the driving of a pile.

Abstract: A system for aligning a pile during pile driving, comprising: a pile (16) having a laterally protruding coupling (20) for a tether; and a pile guide (10) for supporting the pile as it is driven into a substrate, comprising a base frame (12) and a pile guide member (14) mounted on the base frame (12), the pile guide member (14) having in its periphery a slot (24) which is configured to allow the laterally protruding coupling (20) to pass therealong as the pile (16) passes through the pile guide; wherein the pile and pile guide member comprise two pairs of slidably interfitting profiles (52, 86) which are configured to resist gaping in the slot (24) of the pile guide member (14) as the pile (16) is driven therethrough into the substrate.

Abstract: A pile system comprises a base assembly (10) adapted to be mounted on a ground surface and a first pile (50) adapted to be extended through the base assembly (10) and into the ground. The system includes a drilling assembly comprising a drill bit unit (54) secured relative to a lower region of the first pile (50) to drill a hole to accommodate the first pile (50) therein. The base assembly (10) is adapted to engage the first pile (50) to prevent rotation thereof. In one arrangement the system comprises a second pile (80) with associated drilling unit (82) configured to extend through the first pile (50).

Abstract: A piling device including a support frame, a pile-gripping mechanism for gripping a pile and a pile-driving mechanism for driving the pile into the ground. The pile-gripping mechanism and the pile-driving mechanism are connected to and supported by the frame. The piling device also includes a rotation assembly to facilitate rotation of the support frame relative to a rotation footing about a rotation axis.

Abstract: A clamp assembly for securing a vibratory device to a pile comprising a frame, first and second clamp members, and an actuator. The frame is adapted to be secured to the vibratory device. The first clamp member is supported by the frame and comprises a first engaging surface defining peaks and valleys and comprising a first surface layer formed on the peaks and valleys defined by the first engaging surface. The second clamp member is supported by the frame and comprises a second engaging surface defining peaks and valleys and comprising a second surface layer formed on the peaks and valleys defined by the second engaging surface. The actuator member is arranged to displace at least one of the first and second clamp members such that first and second engaging surfaces engage the pile such that the pile is gripped by between first and second clamp members. At least one of the first and second surface layers defines a thickness dimension of at least approximately 0.

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).