Abstract: A system for attaching a columnar building member to a structural support member, uses one or more connecting brackets comprising a flat base plate having an inner perimeter and an outer perimeter, with a plurality of apertures disposed along the base plate. A socket extends from the inner perimeter of the base plate, with the perimeter of the socket conforming to the inner perimeter of the base plate, and with a plurality of apertures disposed along the socket. The columnar building member is attached to the connecting bracket via a plurality of fastening means through the apertures disposed along the socket. The columnar building member and connecting bracket are attached to the structural support member(s) via a plurality of fastening means through the apertures disposed along the base plate.

Abstract: A post-tensioned concrete cap foundation has helical anchors with pipes having several helical discs welded around the pipe perimeter to spin drill deep into subsurface soils or other soft materials with holes in the pipe for high pressure-grouting in place. The helical anchor pipes are coupled to a tensioning element for pulling and post-tensioning the helical anchor. The helical anchors are tension anchors which can be converted to compression anchors. The helical anchors in tension serve to pull the foundation cap down to compress the underlying soil while the compression anchors limit the maximum settlement of the concrete foundation cap. The foundation also includes perimeter-forming and interior corrugated metal pipes with upper and lower sleeved horizontally extending radial bolts that are secured to the pipes and post-tensioned to provide lateral foundation compression.

Abstract: An adjustable and reversible pillar includes a reversible substantially rectangular parallelepiped pillar housing resting on a base. The first and second ends have corresponding first and second mounting flanges extending therearound. The housing is hollow. The mounting flanges each extend inwardly of the walls and into the cavity. Either of the first or seconds ends is adapted for mounting on the base. At least one of the housing walls is selectively removable. At least the upper surface of the base is sized to mate with the first or second ends of the pillar housing by mounting of the corresponding first or second mounting flanges onto the upper surface of base. Vertically adjustable feet are mounted to the lower surface of the base.

Abstract: The present disclosure is directed to a precast collar for providing a protective structure (ex.—a surround structure), a proprietary support structure and an appearance-enhancing (ex.—non-distracting) base accessory for a pole foundation and a pole (ex.—for a utility pole foundation and utility pole). The precast collar may be formed of precast concrete and may be of sufficient dimensions and construction for at least substantially surrounding and for protecting a support structure and body structure portion of a pole foundation. The precast collar may form a recessed portion for receiving a support structure of a pole foundation. The precast collar may be supported upon the pole foundation via the support structure of the pole foundation, while providing access to a base structure of the pole foundation via a cavity formed through the collar, so that said base structure may be connected to a pole.

Abstract: Disclosed are apparatus and corresponding methodology for providing a base support, such as including concrete, and used such as for a wind-driven generator. Precast concrete cylinders are stacked in place upon a platform that may be partially precast and partially cast in place during assembly and supported, in certain embodiments, by plural concrete legs, the other ends of which are supported on a unitary or subdivided concrete foundation. In other embodiments, the platform may be supported by ribbed concrete panels. The concrete cylinders are glued together using an epoxy and then secured by an internal vertical post tension system extending from the platform to the upper most cylinder. Different types of concrete are used between upper and lower sections of the stacked cylinders. The lower section uses reinforced concrete while the upper section used ultra high performance fiber reinforced concrete.

Abstract: A wind tower erected on a foundation in which individual levels are formed by connecting a plurality of cast concrete panels along their vertical joints. Additional levels are installed on each prior level and secured with an all-thread post tensioning system and couplers.

Abstract: The disclosure describes, in part, techniques for designing, fabricating and installing structural caps with a core and composite sleeves to be coupled to structural members of a foundation, such as an installed radial array of batter angled micropiles. These structural caps with sleeves are lightweight and, thus, more portable to difficult-access sites. Once at the sites, operators may fixedly couple these caps to the micropiles or other structural members to form a foundation for a structure to be installed at the difficult-access site.

Abstract: The disclosure describes, in part, apparatuses and methods for installing structures (e.g., foundations, footings, anchors, abutments, etc.) at work sites, such as difficult-access work sites. In some instances, a rotating drill assembly is assembled over a target location in order to excavate a radial array of batter-angled shafts associated with the target location in preparation for the installation of a radial array of micropiles. An operator utilizes the rotating drill in combination with a foundation pile schedule/decision matrix to design and install the radial array of batter-angled micropiles. This disclosure also describes techniques for designing, fabricating and installing structural caps to be coupled to the installed radial array batter angled micropiles. These structural caps are lightweight and, thus, more portable to difficult-access sites where they are coupled to the micropiles forming a foundation for structure to be installed at the difficult-access site.

Abstract: A concrete filled tubular steel column includes a longitudinally extending vertical tubular steel shell and an inner tubular steel member disposed at the center of the steel shell. A plurality of spaced vertical steel plates extend from the inner members toward but not abutting the steel shell. In addition a plurality of horizontally disposed perforated pipes extend outwardly from the inner member and have a plurality of meltable polymer plugs or caps to prevent plastic cement from flowing into or closing the openings. In the event of fire the plastic or polymer plugs or caps melt and allow gases and smoke to flow into the pipes and up through the inner member and out therefrom at the top of the column.

Abstract: A method suitable for anchoring an anchoring element in an object, which anchoring element is compressible in the direction of a compression axis under local enlargement of a distance between a peripheral anchoring element surface and the compression axis. The anchoring element has a coupling-in face which serves for coupling the mechanical vibrations into the anchoring element, which coupling-in face is not parallel to the compression axis. The anchoring element further includes a thermoplastic material which in areas of the peripheral surface enlargement forms at least a part of the surface of the anchoring element, the method includes the steps of: providing a bore in the object; positioning the anchoring element in the bore; and coupling the compressing force and the mechanical vibrations through the coupling-in face into the positioned anchoring element.

Abstract: Blast-resistant foundations are presented that can be used to support a tower, a building, a building supporting a tower, and a tower supporting a building. These foundations can be transported to an installation site and rapidly deployed. They are comprised of one or more precast foundation blocks that do not penetrate the ground beneath them, do not require adjacent foundation blocks to be bound to one-another at their sides with interconnecting steel, and do not require the buildings and/or towers they support to use guy-wires. They can include protected cavities that contain utility equipment and supplies, and they can include conduits from these cavities that can be extended upward through one or more legs of a tower.

Abstract: An assembly of precast concrete units matingly assembled on top of one another to form a whole deck footing, capable of supporting a deck, shed, porch, addition or other structure. The individual units are of manageable weight and can be moved by one person, not unlike a bag of unmixed cement. The units interlock to prevent shifting, separating, frost damage by water infiltration and heaving when placed under ground.

Abstract: Disclosed are apparatus and corresponding methodology for providing a base support, such as including concrete, and used such as for a wind-driven generator. Precast concrete cylinders are stacked in place upon a platform that may be partially precast and partially cast in place during assembly and supported, in certain embodiments, by plural concrete legs, the other ends of which are supported on a unitary or subdivided concrete foundation. In other embodiments, the platform may be supported by ribbed concrete panels. The concrete cylinders are glued together using an epoxy and then secured by an internal vertical post tension system extending from the platform to the upper most cylinder. Different types of concrete are used between upper and lower sections of the stacked cylinders. The lower section uses reinforced concrete while the upper section used ultra high performance fiber reinforced concrete.

Abstract: An embodiment of the system for forming a movable slab foundation as comprised by the present invention has a slab foundation, at least one substantially vertical support member, at least one support surface, and at least one support sleeve. The at least one support sleeve surrounds the at least one support member and is encased within the slab foundation and is capable of movement axially along the axis of the at least one support member. The at least one vertical support member is capable of rotation relative to the at least one support sleeve to restrict the movement of the at least one support sleeve downward relative to the at least one vertical support member, thereby maintaining the height of the at least one support sleeve and the slab foundation relative to the at least one support surface.

Abstract: Tower foundations and structures, kits and methods for making the tower foundations. Aspects of the present invention operate to decouple the required mass for the foundation from the structural components needed to resist compression and tension forces. Aspects of the present invention include a foundation structure made of structural components including pre-cast concrete, cast-in place concrete, reinforced concrete, pre-stressed concrete, pre-tensioned concrete and post-tensioned concrete, for resisting the expected forces transferred from the tower.

Abstract: The invention describes a process and a unit, both enabling to attach a wind turbine tower to a foundation, as well as describes also a wind turbine incorporating the unit. The process features a stage of installation of a support element for the transmission of stresses from the tower to the foundation, followed by a stage of levelling the support element and pouring foundation concrete up to the support element's lower side so that the lower side is adhered to the poured concrete once it has set. The unit comprises at least one support element.

Abstract: The form for a concrete footing (10) is a mold for receiving concrete for footings on construction projects. The form has a housing (12), and a plurality of horizontal support members (16) that extend across the hollow interior of the housing. The form may be manufactured from plastic, cardboard, concrete or other materials. Vertical tubes (14) extend from the top and bottom and are hollow to allow for in situ soil sampling after the footing has been set in the excavation.

Abstract: A tower base section, a tower adapter and a wind turbine having the tower base section and the tower adapter are provided. The tower base section includes a tubular side wall and a flange portion. The flange portion has an inner radius and an outer radius and is configured as a T-flange. The tubular side wall is located closer to the outer radius than to the inner radius. The adapter is arranged outside the tubular side wall and includes a bottom surface pressing from above on the flange portion.

Abstract: Non-cementitious tower foundations and structures, kits and methods for making the non-cementitious tower foundations. Aspects of the present invention operate to decouple the required mass for the foundation from the structural components needed to resist compression and tension forces. Aspects of the present invention include a foundation structure made of structural components for resisting the expected forces transferred from the tower. This foundation structure may be filled with non-cementitious fill of any type to provide the required mass to stabilize the foundation and the tower. A non-cementitious tower foundation structure includes a central shaft; a storage tank; and structural members coupling the central shaft to the storage tank. The storage tank comprises one or more voids for containing non-cementitious fill as ballast to stabilize the central shaft. The total volume capacity of the voids may be at least a threshold volume.

Abstract: A tracker including an outer post having elongated bore and a lower end mounted on a sub-structure, an inner pole rotatably received in the elongated bore, a lower bearing in the bore adjacent a lower end of the outer post and attached thereto to be constrained from lateral movement and mounted on the sub-structure such that a lower end of the inner pole rests on and is supported by the lower bearing, an upper bearing near an upper end of the outer post, a circumferential drive supported on the outer post for rotating the inner pole relative to the outer post, such that substantially a full weight of a load on the inner pole is directly transmitted to the sub-structure and lateral force and torque leverage are placed on a full length of the outer post by way of the upper and lower bearing.

Abstract: A joint connection (20) in which a beam end and a column base of a structure (10), or a peripheral member rigidly joined thereto, are joined to another structure (13) capable of receiving a bending moment through supporting means 22. A deformation due to a very small geometric movement within a resilient range is generated in the supporting means (22) by a reaction force generated at a joint portion with the other structure 13 due to an external force exerted on a beam or a column. This structure is capable of generating a bending moment Mr in a reverse direction to a bending moment Mc generated in the column base or the beam end.

Abstract: The present invention generally relates to a modular, structural framing system.

Abstract: A prefabricated concrete pole base and adjustable method of connection and use to receive, support, and stabilize light poles and the like having different hole mounting patterns, securing the pole to the base and facilitating rapid installation of poles while eliminating the need for on-site concrete forms and lengthy concrete cure times.

Abstract: A vibration isolator of a wind turbine system installed between a wind tower and a concrete foundation includes a plurality of bearing units arranged along the periphery of a flange of the wind tower, each bearing unit having elastic material layers and rigid material layers stacked alternately.

Abstract: A foundation, particularly a foundation of a wind turbine, is provided. The foundation includes a central foundation member and a plurality of foundation segments which are segments of a circular, ring shaped or polygonal foundation element and which are connected to the central foundation member using a plurality of locking elements.

Abstract: Multi-story buildings assembled from pre-cast concrete components produced in a component factory to form earthquake-resistant buildings with lower cost and faster construction time. The multi-story building structure comprising a plurality of piles and pile caps; prefabricated concrete column components; prefabricated concrete beam components; prefabricated concrete floor components; prefabricated concrete stairs components and prefabricated concrete wall components. Each pile cap unites at least two piles to one column; each column component has a groove on each side of the column component for placement of the corresponding sides of prefabricated wall components; and each beam component comprises grooves on the bottom and top sides of the beam for placement of wall components; and openings are located in the body of the beam. Floor components, stairs components, and wall components are made of concrete that are pre-cast with a predetermined shape, size and strength as described.

Abstract: A shear lug is disclosed for transferring shear stresses from a structural element, such as a column in a framing element, down into the foundation supporting the framing element. The shear lug is not initially affixed to the structural element. The shear lug is instead affixed to anchor rods of an anchorage assembly, and is installed into the foundation with the anchorage assembly at the time the concrete foundation is poured. The structural element is subsequently affixed to the anchor rods, so that shear forces are transferred from the structural element, through the anchor rods and to the shear lugs, which effectively dissipate the shear forces to the foundation.

Abstract: Disclosed are apparatus and corresponding methodology for providing a base support, such as including concrete, and used such as for a wind-driven generator. Precast concrete cylinders are stacked in place upon a platform that may be partially precast and partially cast in place during assembly and supported, in certain embodiments, by plural concrete legs, the other ends of which are supported on a unitary or subdivided concrete foundation. In other embodiments, the platform may be supported by ribbed concrete panels. The concrete cylinders are glued together using an epoxy and then secured by an internal vertical post tension system extending from the platform to the upper most cylinder. Different types of concrete are used between upper and lower sections of the stacked cylinders. The lower section uses reinforced concrete while the upper section used ultra high performance fiber reinforced concrete.

Abstract: Blast-resistant foundations are presented that can be used to support a tower, a building, a building supporting a tower, and a tower supporting a building. These foundations can be transported to an installation site and rapidly deployed. They are comprised of one or more precast foundation blocks that do not penetrate the ground beneath them, do not require adjacent foundation blocks to be bound to one-another at their sides with interconnecting steel, and do not require the buildings and/or towers they support to use guy-wires. They can include protected cavities that contain utility equipment and supplies, and they can include conduits from these cavities that can be extended upward through one or more legs of a tower.

Abstract: Some general aspects of the invention provide a foundation fixing unit (202, 204, 400) for fixing a tower (108) of a wind energy converter (100) onto a foundation (110). The unit comprises a fixation plate (202) fixable to the foundation (110), walls forming at least one tower fixation hole (300) in the intermediate plate (202) for passing a tower fixation bolt (220) through the fixation plate (202) in order to fix the tower (108) to the fixation plate (202), a tower fixation nut (400) arranged below the at least one tower fixation hole (300) for receiving a threaded portion of the tower fixation bolt (220) and a nut cage (204) holding the tower fixation nut (400), the nut cage (204) being attached to a bottom surface (222) of the fixation plate (202). Under further aspects, the invention provides a wind energy converter tower comprising the foundation fixing unit (202, 204, 400) and a method for fixing a wind energy converter tower onto a foundation.

Abstract: A ground anchor assembly includes at least two threaded studs, an anchor plate having at least two openings sized and shaped to receive the at least two threaded studs. The assembly further includes a first fastener for each of the at least two threaded studs attached to the respective stud and bearing against a first side of the anchor plate, and a break-away fastener for each of the at least two threaded studs and attached to the respective stud on an opposite side of the anchor plate. Each break-away fastener cooperates with the corresponding first fastener to retain the corresponding stud in position relative to the anchor plate and the other of the at least two studs.

Abstract: A foundation for a tall vertical structure, such as a wind turbine installation, features anchor bolts having a grout cap slid over the anchor bolt, where the grout cap has a flared skirt which seals against the open annulus formed by the anchor bolt and its accompanying PVC sleeve, where the top of the PVC sleeve is generally flush with the bottom of the grout trough. The grout cap extends from its bottom which abuts the bottom of the grout trough, up and extending at least partially into a bolt hole in the tower flange. A method of protecting anchor bolts utilizing the grout cap is also described.

Abstract: A receptacle for secure mail and parcel receipt and storage. The receptacle includes a top which provides a roof for the receptacle, a base, and a housing connected to the top and the base. The housing includes an upper compartment into which mail is first placed, a lower compartment into which mail is deposited from the upper compartment, a front door, located on a front of the receptacle, which is opened to provide access to the upper compartment and through which mail is placed into the upper compartment, a trap door, operatively connected to the front door, in the upper compartment, and an access door that includes a lock. The trap door rests in an open position when the front door is closed, allowing communication between the upper and lower compartments. The trap door is moved to a closed position by the opening of the front door, thereby preventing access to the lower compartment from the upper compartment.

Abstract: The present invention relates to a tower foundation system (30) comprising a foundation (32) for a bottom section (36) of a tower, which bottom section (36) is to be connected to the upper part of the foundation (32), wherein the bottom section (36) is cast into the foundation (32) with an ultra high performance grout (42).

Abstract: A post anchoring foot is configured for use in securing a post to a surface. The foot includes a body dimensioned to snugly receive a portion of the post, with the body including a generally horizontal base portion and a generally vertical side wall that cooperatively present a laterally enclosed post-receiving area. The base portion defines a lowermost surface-engaging anchoring face and an elevated supporting face configured to engage an end of the post, with the supporting face being disposed above the anchoring face. The base portion further defines a plurality of anchor-receiving apertures extending therethrough, with each aperture being configured to receive an anchor therein to securely couple the foot to the surface. The side wall defines a fastener-receiving hole extending therethrough, with the hole being configured to selectively receive a fastener therein to securely couple the foot to the post.

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 present invention may be used for support of a structure attached to a foundation by a structure base flange. A weight distribution element may have a cross-section form that may be generally a trapezoid with an upper surface a lower surface, an outer side surface and an inner side surface. The outer side surface, and inner side surface may be inclined toward a centerline of the cross-section form transitioning from the bottom surface to the top surface. The weight distribution element may be formed of a material that may be moldable to a solid form having multiple bolt through-holes positioned for the weight distribution element to be disposed on bolts to be positioned adjacent a bolt support plate. The material may have a compression and strength composition sufficient to support a structure.

Abstract: A foundation for a wind turbine tower, provided with a central accommodation for accommodating and firmly constraining, by means of threaded bars projecting from such central accommodation, an actual wind turbine tower, made of steel or concrete, is entirely prefabricated and includes at least two prefabricated structural elements, modular and monolithic, made of reinforced concrete, approached in sequence, shape-coupled, and subsequently constrained to each other, at least at such central accommodation, by a series of post-tension cables arranged in respective through-holes, so as to make the entire foundation monolithic.

Abstract: A method of erecting a pylon of a wind power installation is provided. The method includes providing a foundation and placing a plurality of height adjusting units on the foundation. The height adjusting units are made substantially from a plastic material. A load distribution ring is placed on the plurality of height adjusting units. The load distribution ring is straightened and leveled by adjustment of the height adjusting units. A gap between the foundation and the load distribution ring is filled with a grouting material. A pylon segment is placed on the load distribution ring after the grouting material has reached a predetermined strength.

Abstract: A wind turbine installation comprises anchor bolts having a sheath or sleeve which extends above the cement foundation and the overlying grout layer. If desired, the sleeve may partially extend inside the base flange of the wind turbine tower. The sleeve may be manufactured from polypropylene, polyethylene or other materials having satisfactory mechanical properties, primarily that the material be capable of withstanding sufficient plastic deformation to cause the material to conform to the shape of the threads of the anchor bolts without the material failing. This swaging operation results in a crimped end which forms an interference fit with the threads of the anchor bolt thereby preventing or limiting the intrusion of water or other liquids into the bolt-sleeve annulus during the installation of the turbine foundation.

Abstract: An innovation is disclosed which relates to a wind turbine foundation. A circular foundation using fiber reinforced concrete has optional circular reinforcement rods. The foundation includes a vertical stanchion that rests in the bottom of an excavated hole and supports anchor bolts and reinforcement bars in a predetermined configuration while concrete is poured into the hole. All the necessary foundation materials can be combined in a simple and compact kit which can be shipped to a customer.

Abstract: A reinforced structural assembly may comprise a platform and a base. The platform may have four exterior sides. The platform may be square-shaped block and may be adapted to support at least a portion of a post on top of the platform. The base may be operably coupled to and supporting the platform and the post. The reinforced structural assembly may further include side frames that connect the exterior sides of the platform with the base.

Abstract: A method suitable for anchoring an anchoring element in an object, which anchoring element is compressible in the direction of a compression axis under local enlargement of a distance between a peripheral anchoring element surface and the compression axis. The anchoring element has a coupling-in face which serves for coupling the mechanical vibrations into the anchoring element, which coupling-in face is not parallel to the compression axis. The anchoring element further includes a thermoplastic material which in areas of the peripheral surface enlargement forms at least a part of the surface of the anchoring element, the method includes the steps of: providing a bore in the object; positioning the anchoring element in the bore; and coupling the compressing force and the mechanical vibrations through the coupling-in face into the positioned anchoring element.

Abstract: A corner bracket having a base member and a first wall attachment portion that extends substantially perpendicular to the top side of the base member and a second wall attachment portion that extends substantially perpendicular to the top side of the base member, such that a first wall attachment surface of the first wall attachment portion is perpendicular to a second wall attachment surface of the second wall attachment portion. A central bracket member, an inner bracket member, and an outer bracket member each extend from the top side of the base member. The central bracket member is positioned substantially between at least a portion of the inner bracket member and the outer bracket member and a base member edge, two opposing central bracket member edges, an inner bracket member edge, and an outer bracket member edge are each aligned.

Abstract: A support structure made of precast concrete and a building thereof, comprising a building top portion and at least a support structure. Said building top portion includes at least a thin film solar cell and a steel frame lateral beam structure supporting said thin film solar cell. Each said support structure includes a support column and a base, said support column supports said building top portion, and said base is at bottom of said support column. Said support column and said base form integrally into one piece by means of concrete material.

Abstract: A post-construction composite anchor bolt is provided having great resistance to a bending moment, even when the reinforcement covering margin is small, and reduces the transformation force caused by the bending moment acting on the joining point between the connecting part and the second anchor bolt, even if the size of the anchor bolt is increased. A post construction anchor bolt in the concrete frame comprising: a first anchor bolt installed projecting outside of a concrete frame; and a second anchor bolt which is eccentrically positioned to the axis of said first anchor bolt and is installed embedded in the concrete frame, and a connecting part which links said first anchor bolt and said second anchor bolt, and is installed embedded in the concrete frame together with said second anchor bolt.

Abstract: A support pole with enhanced strength along it's base includes an elongated pole member secured to a mounting plate. A majority of the length of the pole member has a uniform cross-section. Slits are cut into each side of the pole member along its lower end. A mandrel is placed into the lower end of the pole and expanded, thereby expanding the lower end of the pole away from the center and creating a larger cross-sectional area at its lower end. The lower end of the pole is secured to the mounting plate. Reinforcing members are welded over the expanded slits and the bottom of the reinforcing member is further welded to the mounting plate. The lower section with a larger cross-sectional area increases the moment of inertia and surface area of the support pole, thereby increasing the strength of the support pole.

Abstract: A structural column assembly of the type used for erecting building structures and the like is bedded in a concrete footing formed in situ in an earthen hole. The column assembly includes a post whose bottom end is suspended above a floor of the hole by a stilt. The stilt includes a plurality of legs which extend from the post's bottom end and grip the hole floor through a plurality of cleats. The cleats help stabilize the column assembly during the concrete pour operation so that it does not shift out of position. The stilt legs are provided with a base pad, which is set below the bottom end of the post at a predetermined distance so that the concrete footing can be poured in a single operation immediately after the hole is formed. The stilt can accommodate posts made from wood, pre-cast concrete or any other known construction material. The stilts can be manufactured from formed flat steel or commercially available angle iron and channel stock.

Abstract: An apparatus and method for mounting a wind turbine and blade assembly on the upper end of a wind turbine tower. In one aspect the apparatus generally includes a ginpole that is used to assemble the tower and a lifting frame or truss that is removably secured to a top bay assembly of the tower using the ginpole. The lifting frame or truss is operated using either cables or hydraulic rams and extends fore of the tower when the frame or truss is in a first position and generally above the tower when in a second position. When in the first position, a wind turbine or blade assembly can be hoisted to the top of the tower. The wind turbine or blade assembly is then moved into position for mounting to the tower as the frame or truss is pivoted to a second position. When the turbine and blade assembly are secured to the tower, the frame or truss is disconnected from the tower and lowered to the ground followed by the ginpole being lowered to the ground.

Abstract: A tower adapter is provided, the tower adapter includes a cylindrical portion extending in a longitudinal direction of the adapter, and a first lateral portion extending perpendicularly to the cylindrical portion at a first end thereof and having a plurality of first through-holes. The ratio of a maximum longitudinal extension and a maximum lateral extension of the adapter is smaller than or equal to 1.