Abstract: The present invention discloses a ground mounting system, particularly for mounting solar photovoltaic panels on a planar or inclined surface or a surface that is partly planar and partly inclined The disclosed invention is a system that comprised of an array of soil nails, inserted in the ground; a plurality of adapting apparatus, each on top of each the nails; and a resulting structure supports racks, made of metal or plastic, or other structural profiles designed to enable mounting photovoltaic panels on it, wherein the racks are installed on the array of nail using the adapting apparatus.

Abstract: A lifting and moving device, and a method of using the device comprising a frame having a first ground engaging end with at least one wheel for providing a movable first ground engagement and a second ground engaging end with a pointed end for providing a fixed second ground engagement for the frame. A lifting and moving support extending between the first and second ground engaging ends is adjustable in length for providing one or more distances between the first ground engaging end and the second ground engaging end. A lifting device is retractable from a position on the support and the frame is movable about a pivot point provided by the second ground engaging end.

Abstract: In one embodiment, tie-down assembly is provided for securing a parked aircraft to a slab of an aircraft mooring area. The assembly includes a support structure having a first side wall, a second side wall, a first end cover coupled with the first side wall and the second side wall, and a second end cover coupled with the first side wall and the second side wall. The assembly also includes a connector rod coupled with the first side wall and the second side wall, a talon pivot rod coupled with the first side wall and the second side wall, a first talon rotatably coupled with the talon pivot rod, a second talon rotatably coupled with the talon pivot rod, a first depth adjustment mechanism coupled with the first talon, and a second depth adjustment mechanism coupled with the second talon.

Abstract: A locking tent stake comprises an elongate sleeve defining a hollow interior, an opening at a rearward end of the sleeve, and a slot extending along an axial dimension of a forward portion of the sleeve, the slot providing external access to a forward end of the interior of the sleeve. A pin is receivable within the rearward opening along a length of the interior of the sleeve. The pin comprises an elongate shaft having a retractable barb rotatably secured to a forward end thereof, the barb being rotatable between a first position, in which the barb is received within a recess along the length of the shaft, and a second position, in which the barb is extended forward of the forward end of the shaft.

Abstract: A seal assembly includes a side ring and a cartridge. The side ring comprises an annular piece of solid material. The cartridge is affixed to the side ring and comprises a shoulder, a beam connected to and extending from the shoulder, a shoe attached to an end of the beam, and a rotary seal disposed on a bottom portion of the shoe.

Abstract: A stake to be inserted into the ground or other soft medium and used to moor a watercraft, tether an animal, support an umbrella or secure a tent includes a slide hammer having a central shaft, an enlarged tubular striking handle, and a spike hingedly mounted at a distal end of the shaft; whereby the spike can be folded against the shaft and stowed within the handle for safe handling. The spike can be spring-loadedly angularly locked in the deployed orientation.

Abstract: The invention relates to a jet anchor which ensures the fixation of the lateral support elements on the surface to mass formed by high pressure jet injection with purpose of providing stabilization of the excavation surface during excavation support and slope stability works, said jet anchor provides the combined usage of anchor body (120), ducted cutting wing (140), connectors, rigid wing opening plate (130), rope pulling apparatus (110), guide pipe elements (150) with new anchor equipment and jet grouting system and thus obtaining strength increased anchor element.

Abstract: Rock bolt (1) comprising at least an elongated body (4), one end of which comprises at least a first external conical portion (16) extending through at least one hole (12) in at least a cylindrical expandable body (5), the hole (12) over a section of the bore hole in the axial direction comprises an internally conical part (15) intended to cooperate with the elongate member outer conical portion (16). Upon relative movement of the elongate body (4) and the expandable body (5) in one direction expands the expandable body in the radial direction. The relative axial movement between the elongated body (4) and the expandable body (5) is provided by at least one tensioning device (7). The rock bolt comprises at least one wedge device (2), which in use of the rock bolt, is connected to the expandable body (5) hole (12) and at least partially inserted between a first portion (17) and at least a second part (18). The rock bolt further comprises at least one connecting means (21).

Abstract: In general, embodiments of the present invention relate to ground anchor assemblies. Specifically, the present invention provides a multi-stage extending ground anchor assembly including wing members that are coupled to a fixing member of the ground anchor assembly. The wing members are configured to make contact with an inner wall of a ground hole such that the earth anchor assembly can be used in surfaces of any consistency, including both bedrock and soft surfaces.

Abstract: Anchor (18) for tensioning at least one component for a civil engineering construction (14), which anchor (18) is arranged to at least partly be located in the ground/underlying surface (12). The anchor (18) comprises at least one surface (20, 22, 24) that is intended to at least partly be covered with material (25), so that only the weight of said material (25) which acts on said at least one surface (20, 22, 24) gives said anchor (18) the capacity for tensioning said at least one component for a civil engineering construction (14).

Abstract: A ground anchor system shaped and dimensioned for secure attachment within a support surface. The ground anchor system includes a primary anchor body extending along a longitudinal axis and including a first end and a second end. A coupling member is associated with the first end of the anchor body. A fastening assembling extends from the second end of the anchor body, the fastening assembly being composed of a plurality of downwardly extending facets, wherein each facet includes a first end and a second end. The first end of each facet is secured to the second end of the anchor body and the second end extends away from the anchor body.

Abstract: A safety line anchor securable to a roof drain is disclosed. The anchor provides a secure tie down location for people working on the roof of a building. The anchor is portable so that users can carry it with them to the roof and secure it in a roof drain with minimal modification of the drain. When the worker is finished on the roof, the device can be removed and carried away. The safety line anchor comprises a body, a drain coupling assembly, and an expansion assembly. The drain coupling assembly securely fastens the anchor to the roof drain. The expansion assembly expands in the neck of the drain or the roof drain system piping to minimize wobbling of the anchor. A safety line may be attached to the body of the anchor.

Abstract: Disclosed herein is a solar array support structure that includes a mounting structure extending a length and configured to receive a solar array. The solar array support structure further includes a support column extending from the mounting structure into a ground. Moreover, the solar array support structure includes a lateral force resistance component in communication with the support column in the ground, the lateral force resistance component being dimensioned to reduce pressure on the ground from a force transmitted by the support column in a first direction and a second opposite direction more so than any other two opposite directions located in the same plane as the first and second opposite directions.

Abstract: An apparatus to facilitate field assessment of static structure sites to provide data in a predetermined format acceptable to a taxing authority, including a personal computing device having a graphic display screen, a user interface, and application software. The user interface is arranged to accept alphanumeric data provided by a user of the apparatus and also accept graphic input from the user representative of structural features of the static structure. The application software is arranged to provide a real-time display on the graphic display screen of dimensional data associated with the graphic inputs as they are entered by the user. The application software is also arranged to compute dimensional attributes of enclosed polygons resulting from the graphic input by the user.

Abstract: A ground anchor and weight distribution plate assembly includes a ground anchor member and a weight distribution plate member. The weight distribution plate member includes an opening formed therein which is sized and shaped to allow for only partial passage of the ground anchor member there through. During installation, the ground anchor member is partially passed through the opening in the weight distribution plate member and then driven into the ground. Compressive forces are exerted by the weight distribution plate member to compact underlying soil and provide a foundation for construction structures such as decks.

Abstract: A method and device for securely anchoring a plant protection structure is provided wherein a support system includes an anchoring post and a support section. The anchoring post presents a post section and an anchor section, wherein each anchor section is configured to angle away from the longitudinal axis as the anchoring post receives a force that drives the anchor section into the ground. The anchoring post is topped by a support module that may include one or more arms that support and/or help protect at least a portion of a plant or object. The arms are configurable to enable the device to help secure or protect plants or objects in a variety of embodiments as best suited to the needs of the object. The anchoring post may include solid or hollow continuous elongate elements that form both the post section and the anchor section.

Abstract: One embodiment relates to an earth-penetrating apparatus. The apparatus includes a pole with a hollow portion therein and a bottom end which is configured to be driven into ground. Anchoring parts are configured to be radially extendable from the pole. In addition, an expansion mechanism is configured to apply a force to the anchoring parts so as to radially extend the anchoring parts from the pole after the pole has been driven into the ground. Another embodiment relates to a solar collector arrangement that includes a plurality of earth-penetrating anchors. Other embodiments, aspects and features are also disclosed.

Abstract: Vertical segmented support and media consolidation plates swingably mounted about pivot points on the vertical segmented support, incorporate media-facing surfaces swingable outwardly from the vertical support means into the surrounding media. Varying segmented lengths form the segmented vertical segmented support. The novel segmented apparatus and installation method further provide for a centering collar 113, an anchor positioning means at level force pivoting plates 194, and pivoting plates 194 positioned 40-50 degrees from vertical. A frusto-cone 197 dx equal to a predetermined distance of one-half inch forms gap 204. The novel method installs an anchor and foundation device in the earth by preparing a hole in the earth, lowering into the hole a segmented anchor or foundation device having swingable media facing plates, and applying force to swing the plates outwardly into the surrounding media.

Abstract: The present invention relates to an anchoring stake that includes an elongate member having a longitudinal axis extending along its longitudinal length, the elongate member having a lower portion which is insertable into a ground environment and an upper portion which in use projects above the ground environment, and at least one anchor member attached to the lower portion of the elongate member. The anchor member is movable between an insertion position in which the length of the at least one anchor member is generally aligned with the longitudinal axis of the elongate member and an anchoring position in which the length of the at least one anchor member extends at an angle away from longitudinal axis of the elongate member.

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 mechanical anchor includes an anchor unit that is divided into a plurality of divided anchor units which are movably connected to a tension rod to be moved in lateral directions. The anchor unit is opened or closed by the movement of the divided anchor units, and the anchor unit forms a cylindrical shape when the divided anchor units are closed. A driving member for opening or closing the anchor unit is mounted on an inner side of the anchor unit in such manner that the driving member is extended in a longitudinal direction of the anchor unit. The driving member and each of the divided anchor units are connected with each other so that the driving force of the driving member is equally applied on each of the divided anchor units.

Abstract: A stabilizer for an in-ground member includes: a mounting collar having a channel extending therethrough; a plurality of arms having respective collar ends, the collar ends being adapted to extend through the channel and engage with the mounting collar; and a resilient member being sized (a) to be disposed within the channel between the collar ends and (b) to be engaged by the in-ground member so as to urge the resilient member against the collar ends to force the collar ends against the mounting collar, whereby to rigidify the stabilizer.

Abstract: A tie down stake for anchoring small aircraft or other objects to the ground in any soil conditions and which consists of a central hub with an eyelet and arms which extend away from the hub. At the opposite end of each arm consist of holes that serve as stake guides for directing a plurality of anchoring rods at a fixed angle downward and inward into the ground. Thus joined by the arms and hub, the anchoring rods cooperate together to form a secure earth anchor. Also disclosed is a rod extraction tool.

Abstract: A piering device includes a shaft having interspaced threaded portions and unthreaded portions extending axially along at least a portion of its length. The unthreaded portions of the shaft are radially recessed with respect to the threaded portions. A helical plate with a threaded passageway can engage the threaded portions of the shaft at any desired location along the shaft. A key is then inserted into the passageway between the helical plate and an unthreaded portion of the shaft to hold the helical plate at the desired location on the shaft.

Abstract: Tethering stakes of the nature intended to be pounded flush with or below ground level. Certain of the tethering stakes include a cap on the pounding end which is adapted for ease of placement and release of a tethering line. Accordingly, the tethering line can be removed from the stake when it is to be pounded into the ground and then engaged with the stake only when tethering is desired. Certain of the embodiments include caps having uniquely shaped apertures for securing the tethering line. Another includes an aperture in communication with an aperture in the stake such that a lead cable or the like may be moved out of the way when the stake is pounded into the ground and may be fully received within the stake when tethering is not desired. Another embodiment employs a coupler passing through an aperture directly beneath the pounding surface to facilitate ease of attachment and removal of the tethering line.

Abstract: Novel anchors and foundations in customized lengths and installation method are less expensive, easier to handle, and assemble in the field to match any required length. Vertical segmented support and media consolidation plates swingably mounted about pivot points vertical support means incorporate media-facing surfaces swingable outwardly from the into surrounding media. Varying segmented lengths form segmented vertical support means. Novel apparatus and method provide for centering collar 113, an anchor positioning means at level force pivoting plates 194, and pivoting plates 194 positioned 40-50 degrees from vertical. A frusto-cone 197 dx equal to a predetermined distance of one-half inch forms gap 204. The novel method installs a anchor and foundation device in the earth by preparing a hole in the earth, lowering into the hole a segmented anchor or foundation device having swingable media facing plates, and applying force to swing the plates outwardly into the surrounding media.

Abstract: Anchoring devices for securing diverse types of structures to the earth or soil, or to rock walls and formations, such as are frequently employed for anchoring gas and petroleum-product pipelines, guy-supported towers, utility poles, large-sized retaining walls and building foundations, among numerous other types of application. In order to render each of the above-described anchoring devices more user-friendly and compatible with the environment, while facilitating the installation thereof in the applicable bore holes, drilled holes or earth trenches, while also reducing the production and assembling steps required in the manufacture of the various anchoring devices, a suitable retentive encompassing packaging structure tightly encases each of the anchoring devices which will maintain the components of the respective anchoring devices in their assembled pre-installed and retracted condition.

Abstract: An apparatus for consolidating earth and anchor setting device. The apparatus includes a vertical support, a plurality of spaced media consolidation plates swingably mounted to the vertical support, a rib disposed along a lower edge of respective ones of the consolidation plates and a bearing plate secured to the vertical support. The apparatus can be used to install a bearing and moment foundation having an upper surface, a lower surface and a converging side surface. The upper surface is adapted to receive a pushing force for pushing the foundation into the soil and the side surface adapted to contact the soil when a pushing force is applied to the upper surface. The anchoring device can also be used to install a pier foundation having a plug, an installation load bearing member, an installed load bearing member and a cap.

Abstract: An earth screw anchor assembly has peripheral edges on its hub member and intermediate flange portion of its spade member with different configurations permitting placement of the hub member on the intermediate flange portion in an asymmetrical relation overlapping and offsetting the respective peripheral edges relative to one another to facilitate application of welds thereto for attaching the hub member to the spade member. The assembly also has an attachment land formed on one side of the intermediate flange portion and protruding downwardly therefrom and being attached along and extending partially about an upper end of the lower portion of the spade member. The blade member includes leading and trailing end portions axially offset from one another and a middle portion extending between the leading and trailing end portions.

Abstract: An anchorage device for use in sand or sandy soils. The device comprises a shank portion (2) and a spike portion (4) at a lower end of the shank portion. The spike portion (4) comprises a first and second pair of downwardly convergent plates (6,18), the second pair of plates (18) extending from a position above the upper ends of the first plates (6) to a position beneath the upper ends of the first plates to funnel sand into the zone between the interior surfaces of the first plates (6). The sand thereby trapped between the plates anchors the spike portion (4) within the ground. The device may be used for example for anchoring beach umbrellas, tents and fences in sand or sandy soil.

Abstract: A ground anchor comprises a generally flat anchor plate folded into a U or V-shape against a resilient bias. The resilient bias may be inherent in the folded portions of the anchor plate, or may be provided by means of auxiliary or plate springs disposed between the folded portions. In the latter, a retaining pin may secure the folded portions together while driving the plate into the ground. A release arrangement shears the pin so that the plate springs open to resist subsequent extraction.

Abstract: Support tubes of an associated yard swing arrangement are mounted to stabilizer apparatus, including an upper tube portion coaxially mounted to a lower tube portion. The lower tube portion includes a "V" shaped anchor plate member arranged for projection into an underlying ground surface. A modification of the invention includes anchor rods pivotally mounted relative to an inner tube arranged for projection through slots of an outer tube for securement to an underlying ground surface in the anchoring of the yard swing structure to the inner tube.

Abstract: The invention relates to a method for installing subterranean supports for structures such as poles, posts and the like, and an apparatus therefor, which will permit such structures to stand free of any stays or guy wires and their associated anchors. The system comprises a support and an instrument for the installation of the support. The support preferably includes an upper and a lower collar assembly, each comprising a collar and a plurality of ground engageable blades pivotally connected thereto. In general, the collar assemblies are lowered into a hole in the ground and the installation instrument is utilized to extend the blades of the collars in a generally radial direction, causing the blades to penetrate the walls of the hole and thus securing the support therein.

Abstract: An end insert for a top cap on a wall panel comprises a extension member removably joined to a tail member. The tail member is received within a channel of the top cap and affixed to the top cap by sonic welding. The extension member is an elastomer and has a stop flange which covers the open end, and a portion which extends away from the open end.

Abstract: An anchoring post adapted to be inserted in the ground is made of a hollow tube having two laterally slanted channels inside the tube adjacent its bottom end. A bifurcated element having two prongs is adapted to be pushed downwardly in the tube, in the ground through the channels until the prongs project outwardly and laterally for retaining the tube in the ground.

Abstract: An expanding anchoring device comprising a shaft, base plate, and two pivotally mounted expansion members for engaging the inner surface of a pre-drilled hole.The expansion members, in two forms of the anchoring device, can penetrate and expand into the sidewall of a pre-drilled hole by cutting a lateral notch in the sidewall.In another form of this expanding anchoring device, the expansion members spring open when they are aligned with a pre-cut lateral notch in the sidewall of a pre-drilled hole.

Abstract: An anchor or foundation apparatus and a method for installing said apparatus in an earthen hole. The apparatus is equipped with outwardly extending moment resisting vanes. The apparatus employs pivotally swingable plates which swing in an arc upwardly or downwardly into the surrounding media to fix the device therein. The surface of the plates forced into the surrounding media is provided with oppositely disposed rib means extending along the upper and lower edges of the plates and said rib means serve as media containment means. The media containment means extends the zone of media consolidation and the plane for dislodgement of the device a considerable distance outwardly into the surrounding media. When the device is employed in the anchor mode the moment resisting vanes can be forced downwardly into the zone of media consolidation to provide enhanced resistance against moment imparting forces.

Abstract: An anchor or foundation apparatus and a method for installing said apparatus in an earthen hole. The apparatus employs pivotally swingable plates which swing in an arc upwardly or downwardly into the surrounding media to fix the device therein. The surface of the plates forced into the surrounding media is provided with oppositely disposed rib means extending along the upper and lower edges of the plates and said rib means serve as media containment means. The media containment means extends the zone of media consolidation and the plane for dislodgement of the device a considerable distance outwardly into the surrounding media. The hydraulic force exerted to swing the plates into the surrounding media is measured, from which the strength of the installation is known.

Abstract: A ground anchor provides a mounting base for a sign post accommodating rotational, tilting, and height adjustments of the post and providing for release of the post at ground level in the event of impact by a vehicle so that no upstanding obstacle capable of causing injury will remain after impact. An angle iron leg with upstanding fins or spade members at the leading and trailing ends thereof is driven or otherwise buried into the ground. A tubular member seated in the channel of the angle iron is bolted to the legs or sides of the angle iron at a selected level to present a top edge or rim supporting an anchor plate with a central raised fragmental spherical dome. The anchor plate is fixedly secured to the tube by bolts threaded into upstanding lugs secured to the tube.

Abstract: A ground anchor is composed of a number of components and is firmly held in position in the ground by its components being moved apart and firmly urged onto the wall of the cavity in which the ground anchor is positioned.

Abstract: An improved piling structure, for particularly advantageous use in sand or in sandy soils, has three elements including a pilot, a frusto-conical disk and a piling integrating the elements together. The disk is of preformed mesh reinforced cementitious material and is disposed on the driven pilot at the bottom of a hole, excavated for disk placement. The cementitious piling is poured onto the disk and pilot, integrating the structure. An alternate unitary pole support includes a hollow, lined casing, with a disk intermediate its ends, and an outer tube extending above the casing top to form a cementitious sleeve over the juncture of the casing and the pole. Methods of assembly and erection are included.

Abstract: A pile anchor for moorings of the type which includes a flexible housing in combination with both a bellis expander and a pair of pivotable flukes extending through apertures in the housing. As load is placed upon the anchor cable, the anchor stock is reciprocated within the housing to expand the bellis against the housing sides which are pushed against the pile hole. Simultaneously the anchor flukes are pivoted to extend through the housing apertures and engage the sides of the pile hole. A pair of such bellis expanders may be employed together with a pair of pivotable flukes to assure positive gripping expansion of the piling assembly with the sides of the pile hole.

Abstract: An anchor for resisting a pulling force applied to a cable includes an expandable outer shell disposed in an opening in a floor, an outer wedge disposed in the shell and having wedge-shaped projections engaged with the inner wall of the shell, and a rotatable inner wedge below the outer wedge engaged with a short length of chain extending through the shell. A cable to be tensioned is attached to the short length of chain. Tension on the cable urges the inner wedge upwardly against the outer wedge which, in turn, is wedged in the interior of the shell to forceably expand the walls of the shell radially outwardly to embed the shell in the floor. The inner wedge is rotatable axially relative to the outer wedge between a first position, in which a wedging force is applied to the outer wedge in response to tensioning of the cable, and a second position, which allows removal of the inner wedge and the short length of chain from the outer wedge and the shell.

Abstract: A drilling tool which comprises: a cylindrical structure having a spiral groove provided on the outer surface thereof and at least one elongated rectangular through-hole provided in the lower portion thereof; a tip which is loosely fitted into said through-hole in such a manner that a cutting edge of said tip faces outside, the number of said tips being equal to the number of said through-holes; a tip guide bar having a head portion and a taper slit which is tapered downwardly starting from a part of the lower surface of said head portion so as to accommodate said tip therein, said part being in the vicinity of the axial line thereof, said tip guide bar being inserted into the lower end portion of said cylindrical structure in such a manner that said tip is pushed outwardly by the tip guide bar, said tip guide bar being engaged with the upper and inner portion of said tip so that said tip guide bar is slidably connected to said cylindrical structure; and a taper shank inserted into the upper end portion of sa

Abstract: Soil anchor has a square drive tube which is driven into the soil. A point crimped onto the drive tube aids in driving and prevents soil entry into the drive tube. When the tube is in place in the soil, two anchor straps are driven down through the tube and past curved guides at the front of the tube on the back of the point which cause the anchor straps to bend to laterally enter the soil for anchoring. A channel-shaped mounting bracket bolted to the top of the drive tube permits the attachment of any device that needs to be anchored and supported; for example, the support post of an aluminum patio roof.

Abstract: An improved electrode for electrically heating a subterranean formation includes a plurality of electrically conductive rod-like members that extend outwardly from a central well bore to provide increased area for conducting electrical current from a source into said subterranean formation. The improved electrode apparatus is adapted to be lowered into a well bore which has been drilled into the subterranean formation and, thereafter, the plurality of rod-like members are driven outwardly from the central well bore. Guide means are provided to direct the rod-like members outwardly into the subterranean formation as a central member is forced downwardly.

Abstract: An earth anchor comprises an elongated square-section tube formed in its sides with throughgoing longitudinally-spaced slots each of which lies in a respective plane perpendicular to the tube axis. The lower end of the tube is pointed and the upper end is open. A plurality of L-shaped anchor elements are provided in the tube and each have a flat anchored leg slidable transversely in a respective one of the slots and extending generally perpendicularly to the tube and a flat guide leg extending generally parallel to the tube and slidable transversely in the tube on the anchor leg of the underlying anchor element. The lowermost anchor element is slidable on the upper surface of a member constituting the pointed tip of the tube. A tool having a wedge-shaped lower end is pushed down through the tube after the tube has been driven into the ground so as laterally to slide the elements one after the other out of the tube and into the earth surrounding them.

Abstract: The present invention relates to an anchoring device which rigidly supports many kinds of standing objects in public works or in the construction industry and provides resistance to pulling loads exerted on the device, and also to a method for settling the device in the bottom of a deep shaft bored into the ground.

Abstract: An improved anchoring post for being driven to a ground, and which is particularly suitable to secure structures against being blown away in a wind; the device consisting of a tubular outer member which is first driven into a ground, and an inner member which is thereafter inserted into the outer member being slit into a series of tongues which spread out sideward within the ground so to give greater resistance against being pulled out.

Abstract: An earth auger is disclosed in which an auger shaft is provided with freely expansible and contractible rotary blades in such manner that said rotary blades may expand automatically when said auger shaft is rotated in the forward direction and may contract automatically when said auger shaft is rotated in the reverse direction. Also a method for driving piles and the like is disclosed which comprises the steps of positioning a pile or shoring adjacent to said auger shaft and above said blades, advancing said pile or the like into an earth bore excavated by said rotary blades, and filling said bore excavated by the rotary blades with mortar or the like.