Abstract: Disclosed is an automatic leveling CFRP plate pre-stressing and tensioning device for a curved surface structure, including a fixed end mechanism and a tension end mechanism, one end of the CFRP plate is connected to the fixed end mechanism and the other end is connected to the tension end mechanism, and the fixed end mechanism cooperating with the tension end mechanism to reinforce a curved surface. The fixed end mechanism includes a fixed end base plate, a fixture, a fixed end CFRP plate clamping plate, and a second high-strength bolt. The fixed end base plate is provided with a slide groove, the fixture is hinged within the slide groove by the second high-strength bolt; the fixture is provided with a fixture groove, and a size of the fixture groove decreases from one end of the fixture near the tension end mechanism to the other end of the fixture.

Abstract: Threaded rod connector including a housing having a cavity for receiving a threaded rod therein, wherein the cavity has a mouth, and an insert including a plurality of rod engagement segments, which are arranged within the cavity, wherein the cavity has a tapered zone tapering towards the mouth for wedging the rod engagement segments against the threaded rod, wherein the insert further includes a plurality of segment carrying arms, each having a segment connection end and an interconnection end, which is located opposite the segment connection end on the respective segment carrying arm, wherein each of the rod engagement segments is connected to at least one of the segment carrying arms at the segment connection end thereof, and wherein the segment carrying arms are interconnected at their interconnection ends. Each of the segment carrying arms extends, originating from its segment connection end, towards the mouth of the cavity.

Abstract: A variable assembly PC member includes: a plurality of hollow PC modules, each of which has an upper flange and a lower flange spaced apart from each other, and a pair of webs connecting both ends of the upper flange and the lower flange to form a hollow therein; and connectors connecting the plurality of hollow PC modules with each other in the width direction.

Abstract: A wedge anchorage includes the components needed to secure two fiber-reinforced polymer (FRP) plates and two FRP tendons. The components include an outer barrel, two inner barrels, two outer wedges, two inner wedges, and a middle wedge. FRP tendons are secured in through holes formed between the respective upper and lower outer wedges and upper and lower inner wedges. A first FRP plate is secured between the upper inner wedge and a middle wedge, while a second FRP plate is secured between the lower inner wedge and the middle wedge.

Abstract: A building element adapted to provide thermal insulation between two building parts such as a floor or ceiling slab and a balcony slab is described. The element comprises: an elongate insulating body; a plurality of reinforcing elements passing through and projecting on either side beyond the insulating body so as to be disposed in use within and serve to reinforce each of the two building parts; at least one through apertured formation extending transversely through the insulating body so as to be able to receive in use a post-tensioning tendon member. A building system including at least one such building element, a building structure incorporating such a building system and a method of building are also described.

Abstract: A system, method, and apparatus for post-tensioning in masonry-based system, especially concrete support systems. In one embodiment, a system is presented that can include an anchor, pocket-former, and bolt, wherein the pocket-former can be configured to engage each of the anchor and bolt to facilitate securing of the system to a form. In another embodiment, a method of post-tensioning is presented, wherein a tendon can be suspended at the live end via connections facilitated by a pocket-former. In another embodiment, a system and method of post-tensioning is presented that prevents a pocket and anchor from being contaminated with debris that could ultimately compromise the integrity of the tensioned material.

Abstract: A system for use with a post-tensioning concrete anchor may comprise a connector anchor including a bore therethrough, the bore including a first frustoconical portion, the connector anchor adapted to bear on the post-tensioning concrete anchor, and a coupler. The coupler may comprise a coupler body including a bore therethrough, the bore including a second frustoconical portion that is oriented oppositely to the first frustoconical portion, and a connector having a bore therethrough and configured to receive the coupler body therein, the connector adapted to mechanically engage the connector anchor such that a tensioning force can be transmitted from the coupler body to the connector anchor via the connector. A method of using the system may allow a second concrete section to be poured adjacent to a first concrete section before the first concrete section has been stressed.

Abstract: A one-piece post-tension tendon pocket former includes a pocket section configured to create a pocket in an edge of concrete, a formwork securing mechanism connected to the second end of the pocket section configured to secure the second end of the pocket section to a formwork, and an anchor securing mechanism. The anchor securing mechanism is configured to secure the pocket section to a post-tension tendon anchor with at least one fastener hole and includes an anchor sealing portion and at least one retention tab. The anchor sealing portion is configured to seal the pocket section to the post-tension tendon anchor. Each of the at least one retention tab extends from a side of the pocket section and is configured to be secured in one of the at least one fastener holes for securing the seal between the anchor sealing portion and the post-tension tendon anchor.

Abstract: A profiled rail assembly for casting into concrete. The profiled rail assembly includes a profiled rail including a rail body having a rail slot extending in the direction of a longitudinal axis of the profiled rail, and a reinforcing body including a head element and at least one tension element protruding from the head element, the head element opposite the at least one tension element having a head element major face defining a contact surface for a formwork element. The at least one tension element is connected to the profiled rail.

Abstract: A platform for a tower of a wind turbine is provided, wherein the platform is adapted for a hanging arrangement inside the tower and includes at least one support for supporting the platform in a horizontal direction against a tower wall, wherein the support includes a foot section for contacting the tower wall, an abutment section attached to the platform, and a pretensioner, wherein the pretensioner preloads the foot section against the abutment section with a pretension force directed towards the tower wall, wherein the foot section is moveable at least sectionally towards the platform when a force directed towards the platform and acting on the foot section exceeds the pretension force.

Abstract: The invention is directed to a molded, hollow, ligature resistant wardrobe comprising a ligature resistant top portion, a ligature resistant coat hanger support and a shelf. A door may be attached to enclose a storage shelf and the igature resistant coat hanger support. The igature resistant coat hanger support having a closed hanger hook engagement recess to prevent providing a ligature tie off point. The ligature resistant top portion may have a sloping shape extending from a back to a front.

Abstract: This disclosure is directed to retention clamps that may be included in post-tensioning assemblies. More specifically, in some embodiments, a sheathing-retaining clamp for a post-tensioning assembly may comprise a body adjustable between an open position and a closed position, wherein in the closed position, the body is configured to wrap around a tendon assembly of the post-tensioning assembly, and a fastening mechanism configured to lock the body in the closed position. In some such embodiments, the sheathing-retaining clamp may additionally comprise a plurality of compression ribs that extend radially inwards from the body in the closed position and that are configured to directly contact a sleeve of the tendon assembly.

Abstract: A method of assembling a wind turbine tower by stacking a plurality of annular sections made of concrete above each other. The main connections are performed between two adjacent annular sections, for withstanding loads induced by a rotor. The auxiliary connections are performed between two adjacent annular sections, for withstanding loads induced by an earthquake and loads induced by the wind on the wind turbine in absence of the rotor, but not necessarily loads induced by the rotor. The method is characterized in that the auxiliary connections between two adjacent annular sections are performed prior to stacking the following annular section.

Abstract: Precast construction elements are described suitable for use in high seismic areas. The precast construction elements can be precast, pre-topped double tees. The precast construction elements incorporate a passive energy dissipation device in a flange. The energy dissipation device provides a ductile connection having a deformation capacity of larger than 0.6?. Adjacent elements are connected to one another at joints that include the passive energy dissipation device. Passive energy dissipation devices can be passive hysteretic dampeners, such as U-shaped flexural plates. Passive energy dissipation devices can be bar dissipaters (e.g., grooved dissipaters). Also described are passive hysteretic dampers that include U-shaped flexural plates held in conjunction with a reinforcement element that defines a circle around which the flexural plate can bend.

Abstract: A sealing connector cover for a tendon in an encapsulated post-tensioning reinforcement system includes a plurality of circumferential cover segments each comprising a circumferential part of a female connector housing at one longitudinal end, and a male connector housing at another longitudinal end. Each segment has a locking element to engage a corresponding locking element on a longitudinally corresponding segment. Each circumferential segment comprises a circumferential part of a locking element in the female connector housing configured to engage the male connector housing of a longitudinally adjacent sealing connector cover or a connector on an encapsulated anchor.

Abstract: The invention is directed to an anchor sleeve (100) for an anchor system (1) suited for anchoring of a composite tension member (300). The anchor sleeve (100) comprises a sleeve base body (101) that has a receiving opening (105) configured to receive an anchor body (200) and extending from a sleeve front opening (121) arranged at a sleeve front end (120) to a sleeve rear opening (131) arranged at a sleeve rear end (130). The sleeve base body (101) is at least partially made from a fiber-reinforced plastic comprising reinforcing fibers whereof at least a portion is wound about the receiving opening (105).

Abstract: A rebar anchoring system and method are provided. The system includes: a rebar, with an external thread formed on the periphery of at least one end; an anchoring head, with a first perforation and a second perforation disposed respectively at both ends extending axially into the anchoring head and communicating with each other, the inner sides of the first and second perforations being formed respectively with a first internal thread matching with the external thread of the rebar and a second internal thread, and the anchoring head being mounted on the end of the rebar through the first internal thread and the external thread of the rebar; and a bolt, having a screw rod matching with the second internal thread, the screw rod being locked into the second perforation of the anchoring head, and the end of the screw rod pressing against the end of the rebar.

Abstract: A shear wall assembly is provided. The assembly includes a first anchor, a second anchor, a third anchor, a first bolt, a second bolt, a seismic fuse, and a rod. Each anchor includes a hollow tubular body including a first open end, a second open end, an interior including female threads, and an exterior including male threads. Each bolt includes a head and a shank. The shank includes male threads. The shank extends through an open end of an anchor. The male threads of the bolt engage with the female threads of the anchor. The seismic fuse is configured to receive the heads of the bolts and includes a hole. The rod includes an end with male threads. The rod extends through the hole of the seismic fuse into the open end of an anchor. The male threads of the rod engage with the female threads an anchor.

Abstract: A system, method, and apparatus for post-tensioning in masonry-based system, especially concrete support systems. In one embodiment, a system is presented that can include an anchor, pocket-former, and bolt, wherein the pocket-former can be configured to engage each of the anchor and bolt to facilitate securing of the system to a form. In another embodiment, a method of post-tensioning is presented, wherein a tendon can be suspended at the live end via connections facilitated by a pocket-former. In another embodiment, a system and method of post-tensioning is presented that prevents a pocket and anchor from being contaminated with debris that could ultimately compromise the integrity of the tensioned material.

Abstract: A thermal insulation structure comprises a thermal insulation unit provided between a floor slab and a balcony slab. Tension rebars are formed in parallel in the floor slab and the balcony slab, but are not in the thermal insulation unit. Connection tension rebars which are parallel with each other pass through the thermal insulation unit and connect the tension rebars in the floor slab and the balcony slab. Shear rebars are formed inside the thermal insulation unit to connect and support the connection tension rebars. Auxiliary shear rebars horizontally connect the shear rebars to reinforce support.

Abstract: A solar mount, for use with a bracket attachment, has an open and a closed state. In the open state, grip flanges on two hinged arms can pass through a slot opening on the bracket attachment. In the closed state, the grip flanges cooperate with respective groves in the bracket attachment to secure the solar mount to the bracket attachment. In the closed state, a fastener attaches a solar accessory, such as a rail, and holds the two hinged arms together. A flexible mount helps hold the two hinged arms together in the open state, and also helps hold the two hinged arms in the closed state.

Abstract: A method of heat treating post-tensioning strand wedges that enhances efficiency, repeatability and safety is provided. The method includes providing a plurality of post-tensioning strand wedges, transporting each post-tensioning strand wedge to a heating assembly having a first induction heater, heating each post-tensioning strand wedge using the first induction heater of the heating assembly to form a heated post-tensioning strand wedge in a plurality of heated post-tensioning strand wedges, and delivering the plurality of heated post-tensioning strand wedges to perform a series of actions.

Abstract: The present disclosure is related to a mold device for molding a waffle slab, wherein a plurality of connecting structures made of steel bars protrude from the sides of the waffle slab, the mold device comprising: a plurality of steel molds provided at both sides of each of the plurality of connecting structures and surrounding the waffle slab, each of the plurality of steel molds having a top surface, which has a hole therein; a plurality of auxiliary devices respectively disposed at the sides of the waffle slab and having through holes corresponding to holes in the plurality of steel molds; and a plurality of fasteners; wherein the plurality of fasteners respectively pass through the through holes of the plurality of auxiliary devices and are fixed into the holes of the plurality of steel molds so that each of the plurality of auxiliary device transversely connects the top surfaces of the plurality of steel molds.

Abstract: An intermediate anchor assembly includes an encapsulated anchor having a front and rear encapsulation extensions. The assembly includes a cap with an outer surface and a front tube with an inside diameter that is greater than the outer diameter of a tension member. The assembly includes a front adapter that sealingly couples to the outer surface of the cap and sealingly couples to the outer surface of the front tube. The assembly includes a rear tube having an inside diameter that is greater than the outer diameter of the tension member. The assembly includes a rear adapter that sealingly couples to the rear encapsulation extension and sealingly couples to the outer surface of the rear tube. The assembly includes a first split seal sealingly fit between the tension member and the front tube and a second split seal sealingly fit between the tension member and the rear tube.

Abstract: A system for use with a post-tensioning concrete anchor may comprise a connector anchor including a bore therethrough, the bore including a first frustoconical portion, the connector anchor adapted to bear on the post-tensioning concrete anchor, and a coupler. The coupler may comprise a coupler body including a bore therethrough, the bore including a second frustoconical portion that is oriented oppositely to the first frustoconical portion, and a connector having a bore therethrough and configured to receive the coupler body therein, the connector adapted to mechanically engage the connector anchor such that a tensioning force can be transmitted from the coupler body to the connector anchor via the connector. A method of using the system may allow a second concrete section to be poured adjacent to a first concrete section before the first concrete section has been stressed.

Abstract: A method for forming a foundation wall of a building structure having a building frame seated on the foundation, the method including coupling each of a plurality of elongated vertical members to a floor of the foundation and the building frame so that each of the vertical members extend between the floor and the building frame adjacent to an existing foundation wall, providing at least one elongated horizontal member through apertures of the vertical members such that the horizontal member extends between and passes through respective ones of the vertical members, coupling panels to the horizontal member so as to form, with the vertical members and the horizontal member an integrated self-supporting formwork which, with the existing foundation wall forms a cavity, having disposed therein, the vertical members and the horizontal member, and flowing concrete into the cavity so as to fill the cavity around the vertical members and horizontal member disposed within the cavity.

Abstract: A system includes a form panel positioning apparatus for positioning an elevated form panel of a concrete form. The apparatus may include at least one positioning subassembly providing positioning of the form panel in at least one direction, and may include a first positioning subassembly with a first clip to clip onto an element of a concrete reinforcement structure, a first support rod engageable with the first clip, and a first positioning plate positionable on the rod adjacent to the form panel to support the form panel on the rod. The system may include a second positioning subassembly for positioning the form panel such that the form panel is supported in two directions, such as substantially vertical and substantially horizontal directions.

Abstract: A rail assembly is provided, suitable for embedding in concrete, including a profile rail having a rail body, wherein the rail body has a first lateral wall, a second lateral wall, a first rail lip protruding from the first lateral wall, and a second rail lip protruding from the second lateral wall. The rail assembly has a reinforcing element with a force-absorbing body, wherein the force-absorbing body is positioned in front of the first lateral wall of the profile rail for contacting the first lateral wall of the profile rail with the force-absorbing body. A construction body having a concrete element, in which a rail assembly of this type is embedded is also provided.

Abstract: Disclosed is a fiber-reinforced polymer (FRP) cord system and method that is useful for concrete repair and strengthening applications, including the strengthening of concrete slab edges to increase their resistance to lateral loads from extension elements, such as railings, attached to balconies or façades attached to portions of a building. In certain configurations, fiber-reinforced polymer cords are affixed to a concrete structure along an end surface that includes an extension element, with the fiber-reinforced polymer cords positioned on opposite sides of the extension element. In further configurations, fiber-reinforced polymer cords are affixed to adjacent faces of concrete structures. In particularly preferred configurations, the fiber-reinforced polymer cords are situated within grooves that extend into the faces of the concrete structures that are being reinforced.

Abstract: A method for retaining tension in a stressed tendon cast in a reinforced concrete structure includes removing concrete from the structure to expose the tendon, attaching a re-anchoring clamp to the exposed tendon, the re-anchoring clamp comprising two partial sections assembled to enclose the tendon, pouring grout around the re-anchoring clamp and allowing the grout to substantially cure.

Abstract: A sheathing repair assembly for a tension member of a post-tensioning tendon, the tension member including a strand and a sheathing layer is disclosed. The sheathing repair assembly includes a repair tube having first and second end portions and a first sealing assembly. The first sealing assembly includes a first nut having a first frustoconical surface and a first forcing element adapted to cooperate with the first frustoconical surface so as to compress the first end portion of the repair tube. The sheathing repair assembly also includes a second sealing assembly having a second nut having a second frustoconical surface and a second forcing element adapted to cooperate with the second frustoconical surface so as to compress the second end portion of the repair tube.

Abstract: A parallel wire cable is produced from a plurality of wires arranged in a bundle for use as a structural cable. Each wire in the plurality of wires is parallel to every other wire in the bundle, and each wire in the plurality of wires is tensioned to a tension value.

Abstract: A corrosion-protected tension member (10) comprises a plurality of tension elements (14) and an anchor device (44) with an anchor element (16) which is designed to transmit tension forces from the tension elements (14) to a superior structure (12), at least one elastically compressible sealing disc (28), and a supporting device (26) which is arranged on that side of the at least one sealing disc (28) which faces away from the anchor element (16). According to the invention, when the tension member (10) is in a state in which it is preassembled but not yet placed under tensile stress, at least one plastically deformable disc (30) of corrosion protection material is arranged between the anchor element (16) and the at least one sealing disc (28).

Abstract: A reinforced stud-framed wall, including a bottom plate; first and second vertical studs; a member supported on the bottom plate, the member having a compression strength greater than a compression strength of the bottom plate; the first vertical stud having a bottom end supported on the member with a first contact area, whereby a load on the first contact area is spread over a first area on the bottom plate larger than the first contact area; and the second vertical stud having a bottom end supported on the member with a second contact area, whereby a load on the second contact area is spread over a second area on the bottom plate larger than the second contact area.

Abstract: A system for monitoring tension forces of tendons disposed inside a concrete structure in post-tensioning includes a hydraulic jack coupled to one tendon at one end of the concrete structure to apply the tension force to the tendon by means of the forward movement of a piston; a hydraulic pump connected to the hydraulic jack by means of a hydraulic pressure supply pipe to supply a hydraulic pressure to the hydraulic jack; a digital elongation length measurement sensor disposed on the hydraulic jack to measure the elongation length of the piston; a measurement unit having a data logger adapted to receive and store the elongation length data measured by the digital elongation length measurement sensor and to send the elongation length data to a main server; a digital pressure measurement sensor disposed on the hydraulic pressure supply pipe of the hydraulic pump; and a control module adapted to receive the elongation length data from the data logger or the main server, calculate the tension force, compensate fo

Abstract: A hold down system for a building wall comprises a first rigid member and a second rigid member, the second rigid member being vertically spaced apart from the first rigid member, the first rigid member is supported on a horizontal member of a stud wall, the first and second rigid members including first and second openings, respectively; a tie-rod with a lower end portion for being anchored to an anchorage, the tie-rod extending transversely through the first and second openings, the tie-rod dividing the first and second rigid members into a first lateral section on one side of the tie-rod and a second lateral section on a diametrically opposite side of the tie-rod; first support and second support disposed between the first and second rigid members, the first support being disposed in the first lateral section, the second support being disposed in the second lateral section, the tie-rod extending through the first and second rigid members outside of the first support or the second support; and a nut threade

Abstract: A coupler may include a first chuck, the first chuck including an outer surface and first external threads and a second chuck, the second chuck including an outer surface and second external threads having a reverse orientation relative to the first external threads. The coupler may also include a coupler body including a first end, a second end, and a passageway extending between the first end and the second end, the first end secured to the first chuck, the second end secured to the second chuck, the first end including first internal threads engaging the first external threads, the second end including second internal threads engaging the second external threads.

Abstract: A system for wall to wall connection for precast shear walls includes a plurality of horizontal and vertical reinforcement bars configured within the precast shear wall. The system also includes a plurality of connecting tubes fixed between the spacing provided between the reinforcement bars, a plurality of openings provided between the plurality of connecting tubes, a plurality of grout tubes fixed above the plurality of openings to grout the openings after completing confection of the shear walls, a plurality of connecting bars capable of being inserted within the connecting tubes of the precast shear wall, when erected, a connecting device for inserting through the openings to grip the connecting bars, and a driving device to supply power to the drive for causing rotation of the drive/manual action and, thereby, sending the connecting bar in a translational motion from the first shear wall to the second shear wall.

Abstract: The process includes forming a concrete form at least one end wall where the concrete form is adapted to receive concrete placed thereinto. The process also includes setting a fixed end anchor and a tensioning end anchor on at least one end wall where the fixed end anchor and tensioning end anchor are each adapted to receive a tendon. The process further includes threading the tendon through the fixed end anchor and tensioning end anchor such that a tensioning end portion of the tendon extends from the tensioning end anchor and placing concrete into the concrete form. The process includes installing a cap about the circumference of the tensioning end portion of the tendon. The cap includes a cap body. The cap body includes an inner bore, where the inner bore has a diameter corresponding to the outer diameter of the tendon.

Abstract: A post-tension tendon pocket former includes a pocket section, a formwork securing mechanism and an anchor securing mechanism. The pocket section is configured to create a pocket in an edge of concrete. The pocket section includes a first end and a second end. The formwork securing mechanism connected to the second end of the pocket section. The formwork securing mechanism is configured to secure the second end of the pocket section to a formwork. The anchor securing mechanism is connected to the first end of the pocket section. The anchor securing mechanism is configured to secure the first end of the pocket section to an anchor. The pocket section, formwork securing mechanism and anchor securing mechanism are integrally formed to create a one-piece pocket former. Whereby, the post-tension tendon pocket former is configured so secure and align the anchor to the formwork.

Abstract: An element for thermal insulation between two building parts, including an insulating body to be arranged between the two building parts and reinforcement elements in the form of at least tensile elements, extending in the installed state of the element essentially horizontally and perpendicularly to the essentially horizontal extension of the insulating body through said body, and respectively projecting in the horizontal direction from the insulating body and here allowing a connection to one of the two building parts preferably made from concrete. The tensile reinforcement elements are formed as multi-part composite elements such that at least in the area of the insulating body they exhibit a central section projecting from the insulating body and at least partially being made from fiber-reinforced synthetic material.

Abstract: A method for forming a concrete anchor may comprise the steps of providing an anchor body, at least partially encapsulating the anchor body in a sealing cover, providing at least one tubular member, engaging an end surface of the tubular member against a surface of the sealing cover so as to weld the member to the sealing cover.

Abstract: An element for thermal insulation between two building parts, particularly between a building (A) and a protruding exterior part (B), comprising an insulating body (2) to be arranged between the two building parts and reinforcement elements in the form of at least tensile elements (3), extending in an installed state of the element (10) essentially horizontally and perpendicular to an essentially horizontal extension of the insulating body through said body, and respectively projecting in the horizontal direction from the insulating body and here allowing a connection to one of the two building parts preferably made from concrete.

Abstract: A post-tensioning tendon may include a tension member including a strand and sheath, the sheath having an outer surface. The post-tensioning tendon may also include an anchor coupled to an end of the tension member, the anchor including a tubular extension through which the tension member is passed. The tubular extension may have an engaging surface. The post-tensioning tendon may additionally include a sheathing retention assembly. The sheathing retention assembly may include an outer cap, the outer cap having a forcing surface. The outer cap may be coupled to the tubular extension. The sheathing retention assembly also may include one or more holding elements positioned at least partially within the outer cap. The one or more holding elements may each have a tapered outer surface abutting the forcing surface. The one or more holding elements each may include an inner surface that engages the outer surface of the sheath.

Abstract: A delay anchor (delay anchor) for coupling terminal ends of two discontinuous tendons together resulting in a structurally continuous single tendon. The delay anchor generally comprises a coupling sleeve seating one set of tendon wedges for clamping one tendon end, and a stressing barrel seating a second set of tendon wedges for the other tendon end, the stressing barrel being attached to the coupling sleeve, and a compression spring biasing the two assemblies apart. The coupling sleeve is internally configured with a plurality of internal locking channels, and the stressing barrel has a plurality of radially protruding locking lugs slidable therein to provide a twist-lock insertion feature. An encapsulation insert is engaged to one side of an intermediate anchor and an encapsulation sleeve locks onto the encapsulation insert and covers and weather seals all internal components of the delay anchor.

Abstract: A hold down system for a building wall comprises a first rigid member and a second rigid member, the second rigid member being vertically spaced apart from the first rigid member, the first rigid member is supported on a horizontal member of a stud wall, the first and second rigid members including first and second openings, respectively; a tie-rod with a lower end portion for being anchored to an anchorage, the tie-rod extending transversely through the first and second openings, the tie-rod dividing the first and second rigid members into a first lateral section on one side of the tie-rod and a second lateral section on a diametrically opposite side of the tie-rod; first support and second support disposed between the first and second rigid members, the first support being disposed in the first lateral section, the second support being disposed in the second lateral section, the tie-rod extending through the first and second rigid members outside of the first support or the second support; and a nut threade

Abstract: The invention relates to a tool holding fixture (1) for rotationally driven tools (2), said tool holding fixture comprising a rotationally symmetrical holding body (3) which has a front clamping portion (4) having a holding opening (5) for a tool shaft (6) of the tool (2), and a rear holding portion (7) to be held in a work spindle of a machine tool. To achieve a reduced mass, a lower mass moment of inertia and at the same time high stiffness, a sleeve (11) consisting of a fiber-reinforced plastic is arranged at least in the front clamping portion (4).

Abstract: Encapsulated anchor devices, systems, and methods are provided. An exemplary anchor device is used in a system for reinforcing a structure. The exemplary anchor device includes an anchor plate and a wedge. A strand is pulled through the anchor plate, and one portion of the strand is disposed in a first cover and another portion of the strand is bare. The device further includes a protective cover that encapsulates the anchor plate, the strand, and a portion of the first cover.

Abstract: A pocketformer includes a pocketformer body having a tapered exterior surface. The exterior surface has at least one portion along a length thereof of substantially constant diameter. The pocketformer body has a feature for engaging an anchor base in a concrete structure prior to pouring concrete and a grout ring having a substantially constant inner diameter substantially equal in diameter to the at least one portion. The grout ring has an exterior surface shaped to cause retention of the grout ring in set concrete.

Abstract: A cable-membrane tensegrity structure which is asymmetric, and construction method and design method thereof are provided. The cable-membrane tensegrity structure comprises a central opening and is formed by a ring cable (4) and three layers of radial cables comprising a suspension cable (1), a ridge cable (2) and a valley cable (3), wherein the suspension cable (1) is located above the ridge cable (2), the ridge cable (2) is located above the valley cable (3), wherein one end of each of the suspension cable (1), the ridge cable (2) and the valley cable (3) is connected to the ring cable (4), and the other end of each of the suspension cable (1), the ridge cable (2) and the valley cable (3) is connected to a peripheral supporting structure (7), wherein a coating membrane (5) is tensioned between the ridge cable (2) and the valley cable (3) that are adjacent to each other and function as a skeleton to tension the coating membrane (5).