Abstract: An anchoring device, an anchorage comprising an anchoring device, and a method for producing the anchoring device.

Abstract: An anchor and railing assembly for anchoring a baluster or balustrade to both outdoor and indoor structures, such as raised, generally flat or angled roof-like structures or indoor stairs or floors, which includes an anchor baseplate with a top surface and a bottom surface, and an internally threaded bore extending at least partially from the top surface generally towards the bottom surface, a baluster, fasteners for fastening the baluster to the anchor baseplate via its bore, and fasteners for fastening the anchor baseplate to either an outdoor or indoor structure.

Abstract: A post support having a base securable to a surface and a cap for concealing fasteners used for securing the base to the surface, wherein: the base has two upstanding portions with a central base portion therebetween, the cap has a central support portion between two downwardly extending portions, the cap being receivable within the base and rotatable between a first condition of use in which the said fasteners are accessible and a second condition of use in which the fasteners are concealed, and at least one protuberance is provided, the protuberance being associated with the upstanding portions and the downwardly extending portions for retaining the cap within the base.

Abstract: A post-tensioned tube foundation for supporting a structure subject to high upset forces is described herein. The post-tensioned tube foundation includes an outer CMP, an inner CMP, and a tubular concrete base positioned between the inner CMP and the outer CMP. The outer CMP includes an inner surface that defines a cavity extending between a first open end and an opposite second open end. The outer CMP is positioned within an excavated hole defined along a ground surface. The inner CMP is positioned within the cavity of the outer CMP such that an annular space is defined between the inner CMP and the outer CMP. The tubular concrete base is positioned within the annular space defined between the inner CMP and the outer CMP. A plurality of bracing beams extend radially outwardly from the tubular concrete base.

Abstract: A support apparatus having a base to support a support member which, in turn, supports a structure (e.g., a building joist, overhead structure, combinations thereof). The support apparatus may be used to provide reinforcement between a floor (e.g., ground, substrate, or the like) and the structure. The base of the support apparatus is in the form of a generally planar circular base, but may have any shape. The base may include one or more platforms, recesses, or ribs in order to provide structural support to the base and/or locations for one or more fastener apertures. The one or more fastener apertures are configured to receive one or more fasteners for operatively coupling the base to the floor in order to resist movement of the base during installation and/or use of the support apparatus.

Abstract: The foundation system includes a below ground rigid raft foundation to bear a load for an above ground structure, and granular cushions and piles formed below the raft foundation. The granular cushions are configured for uniform load distribution of the raft foundation and the piles are configured to bear a load of the above ground structure and the raft foundation. The foundation system further includes stone columns encapsulated with a non-woven geofabric and configured to stabilize the raft foundation. The raft foundation is disposed adjacent and above the stone columns, the granular cushions are present between neighboring stone columns, and the granular cushions are present between the stone columns and the piles. The stone columns have a cementing agent for stabilization.

Abstract: Improved equipment bases and methods for making and using same are disclosed herein. The equipment base can include a first coated substrate including a first part having a first thickness sized to provide the load-bearing support for the equipment, a first elastomer coating the first part, a second coated substrate positioned adjacent to the first coated substrate, the second coated substrate including a second part having a second thickness sized to provide the load-bearing support for the equipment, and a second elastomer coating the second part. A first seam can be formed between the first and second coated substrates to allow for moisture to pass between the first and second coated substrates so that moisture is allowed to seep away from the bottom of the equipment.

Abstract: The present invention is a method for accessing a model, wherein the model incorporates a plurality of roof truss assemblies, wherein the assemblies are comprised of a plurality of members; detecting at least one interface between at least two roof truss assemblies, and wherein the interface type is detected; recording, by at least one processors, a interface type, wherein a set of required values based on the interface type are identified; calculating a set of actual values associated with the interface; comparing if the set of actual values is within the required values; identifying a modification to at least one roof truss assembly involved in the interface; incorporating the modification into the model; and analyzing the model for newly created interfaces between a set of members of the model.

Abstract: An anchored umbrella base is provided with a screw-in base member threaded to an anchor and protruding through a dome to receive a lower umbrella pole.

Abstract: Various implementations include a system for coupling a post to a foundation. The system includes a rod having a first rod end and a second rod end. The first rod end is spaced apart from a top surface of the foundation, and the second rod end is coupled to the foundation. The post has at least one side wall at least partially defining an inner cavity and an inner tube disposed within the inner cavity and coupled to the at least one side wall. The inner tube has a first tube end and a second tube end that is closer than the first tube end to a bottom end of the post. A portion of the rod is disposable within the inner tube such that the first rod end is axially spaced apart from the first tube end. The first rod end is couplable to the first tube end.

Abstract: An anchor bolt fastener assembly with specialized connection capabilities and features for attaching building components to concrete slabs, walls, ceilings, and/or structural surfaces. Compression force can be established and maintained over time using a compression washer in combination with a specialized fastener stud that is designed to exploit the compression washer benefits. Methods of using exemplary embodiments include installing the anchor bolt fastener assembly relatively flush with the surface of the concrete slurry by direct insertion in the slurry using a specialized threaded anchor bolt float. Once the slurry hardens, the anchor bolt and anchor bolt float embedded in the concrete slurry cooperate with the specialized fastener stud to secure the building component to the concrete.

Abstract: A gusset structure includes a body having a plate contacting end forming a plate mating surface, and extending from the plate contacting end to a distal end. The body defines a tube mating surface extending between the plate contacting end and the distal end. The plate mating surface engages a plate. The tube mating surface includes a first surface portion and a second surface portion forming an interior surface angle therebetween. The interior surface angle has a vertex disposed on a vertex axis, which intersects the plate mating surface. The first surface portion engages a first side wall of an elongate member. The second surface portion engages a second side wall of the elongate member. The body flares outward from the distal end toward the plate contacting end to distribute stress in the plate from the corner of the elongate member over a larger area.

Abstract: A reinforced tensionless concrete pier foundation for supporting a tower and a method of constructing the same is provided, the foundation having an outer CMP and an inner CMP with an annular space therebetween in which a plurality of sleeved tower anchor bolts are embedded, and the pier foundation including at least one reinforcement structure that at least partly encircles the outer CMP to provide one or more of increased lateral stiffness, increased shear resistance and overturning (upset) moment capacity, reduced bending, displacement, and deflection of the top of the pier, and improved conditioning, containment, skin friction and lateral bearing capacity of the surrounding soil and/or rock substrate that supports the tensionless pier.

Abstract: A post installation bracket for installing posts on a base such as a concrete slab is provided. The post installation bracket includes a leveling plate with at least one leveling element and an anchoring bolt securing assembly configured to securely receive a first end of an anchoring bolt, a second end of the anchoring bolt distal to the first end securely anchored into the base. The post installation bracket further includes at least one leveling bolt securely fastened to each of the at least one leveling elements, the at least one leveling bolt used to position the leveling plate and post with respect to the base.

Abstract: Provided are a concrete foundation structure capable of firmly fixing a precast concrete foundation to a ground, and a method for constructing the concrete foundation structure. A concrete foundation structure 10 includes a precast concrete foundation 16 having a projecting portion 30 embedded in a ground G. An anchor plate 20 is placed inside an excavation hole 18 formed in the ground G, and the precast concrete foundation 16 and the anchor plate 20 are connected by a connecting member 22. In the excavation hole 18, a backfill portion 24 is formed of a backfill material 94 including a solidifying material and soil. A filler layer 26 is formed of a filler 96 containing a solidifying material between the precast concrete foundation 16 and the backfill portion 24. The precast concrete foundation 16 has a through-hole 42 through which the connecting member 22 is inserted, and the filler 96 forming the filler layer 26 is filled through the through-hole 42.

Abstract: A foundation for a wind mill includes a circular or polygonal pedestal for supporting a wind mill tower and a plurality of ribs radiating radially outwardly from the pedestal, wherein the pedestal is divided into a plurality of circumferential sections, wherein a circumferential section and a rib are each integrally formed with one another, or are each formed, as a precast concrete element, wherein the precast concrete elements are made from reinforced concrete including a first reinforcement structure, in particular reinforcement bars, embedded into the precast concrete elements, neighbouring precast concrete elements, in their sections radiating outwardly from the pedestal, are spaced from each other in a circumferential direction and the clearance between two neighbouring precast concrete elements is each bridged by a bridging plate.

Abstract: Disclosed herein are embodiments of a traffic signal or sign support structure. The structure includes a vertical pole having a first end and a second end. The first end is configured to be mounted to a foundation. The structure also includes a mast arm arranged substantially horizontally relative to the vertical pole. The mast arm has a third end and a fourth end. Additionally, the structure includes a pole junction assembly configured to connect the third end of the mast arm to the second end of the pole. In particular, the mast arm and the pole are each joined to the pole junction assembly in an area of geometric continuity.

Abstract: A wind turbine having a foundation. The foundation has a first foundation portion having a top side and a concrete foundation pedestal having a top side. The top side of the concrete foundation pedestal is annular and projects beyond the top side of the first foundation portion. The wind turbine also has a steel tower having a plurality of tower segments, wherein a lower tower segment has a flange having a plurality of through bores. The flange is placed on a top side of the concrete foundation. The wind turbine further has a plurality of clamping elements. A lower end of the clamping elements is fixed by means of a fixing unit in or under the first foundation portion. An upper end of the clamping elements projects beyond an upper end of the concrete foundation pedestal and extends through the through holes. The upper ends of the clamping elements are braced by means of fixing units. An outward side of the concrete foundation pedestal is of a conical configuration.

Abstract: An anchoring device for supporting a post from a support surface. The anchoring device comprises a base, at least one stanchion extending from the base, and a plate attached to the stanchion opposite the base. A plurality of side supports is included with each side support attached to and extending from the base. The side supports are also attached to the plate and extend past the plate. First and second guides are included with each guide attached to the plate and each side support. Each guide extends away from the base.

Abstract: A building wall includes a first shear wall panel having a horizontal bottom edge and a right vertical edge, a horizontal base support located under the horizontal bottom edge of the first shear wall panel, and a first tie-down that couples the first shear wall panel to the base support at a central point along the horizontal bottom edge of the first shear wall panel such that the shear wall panel rocks under horizontal forces. The wall further includes a second shear wall panel in plane with and adjacent to the first shear wall panel, the second shear wall panel having a horizontal bottom edge and a left vertical edge. The horizontal base support further is located under the horizontal bottom edge of the second shear wall panel, and a second tie-down couples the second shear wall panel to the base support at a central point along the horizontal bottom edge of the second shear wall panel such that the second shear wall panel rocks under horizontal forces.

Abstract: An anchoring device for supporting a post from a support surface. The anchoring device comprises a base, at least one stanchion extending from the base, and a plate attached to the stanchion opposite the base. A plurality of side supports is included with each side support attached to and extending from the base. The side supports are also attached to the plate and extend past the plate. First and second guides are included with each guide attached to the plate and each side support. Each guide extends away from the base.

Abstract: An anchoring device for supporting a post from a support surface. The anchoring device comprises a base, at least one stanchion extending from the base, and a plate attached to the stanchion opposite the base. A plurality of side supports is included with each side support attached to and extending from the base. The side supports are also attached to the plate and extend past the plate. First and second guides are included with each guide attached to the plate and each side support. Each guide extends away from the base.

Abstract: Reinforced building wall comprises a foundation; an anchor rod extending from the foundation; first stud wall disposed on the foundation and second stud wall disposed above the first stud wall; first tie rod including first and second threaded end portions, the first threaded end portion is operably connected to the anchor rod; second tie rod including third and fourth threaded end portions, the third threaded end portion is operably connected to the second threaded end portion of the first tie rod; the fourth threaded end portion operably attached to the second stud wall; an intermediate portion of the first tie rod is unthreaded, the intermediate portion extending through a first top plate of the first stud wall and a second bottom plate of the second stud wall and the second threaded end portion is not disposed within the first top plate and the second bottom plate.

Abstract: A utility pole is reinforced by assembling and installing a reinforcement channel assembly comprising a lower reinforcement channel driven into the ground alongside the pole, an inner splice plate supported on and against an inner surface of the lower reinforcement channel, an upper reinforcement channel supported on and against an outer surface of the inner splice plate, and an outer splice plate supported on and against respective outer surfaces of upper and lower portions of the upper and lower reinforcement channels. An outer splice plate is secured to the inner splice plate, sandwiching between them the respective upper and lower portions of the lower and upper reinforcement channels, and the upper reinforcement channel is secured to the pole.

Abstract: The deck block has is made of plastic by a roto-moulding process. The deck block has a truncated pyramidal shape with a flat top plane, a hollow center; a uniform wall thickness; a central vertical post socket and four joist slots extending horizontally from the post socket at a right angle with each other. The deck block has a multi-wall pillar therein extending between a bottom surface of the post socket and a bottom plane of the block. This pillar is made of four vertical hollow oval-shaped columns that are arranged in a circular array under the post socket for reinforcing the bottom surface of the post socket. In another aspect, the joist slots have protruding lips on each side thereof, for enlarging a top surface of the block and for reinforcing the joist slots.

Abstract: A precast concrete column supports a building. In one exemplary embodiment, the precast concrete column includes a connector for securing a wooden column to the precast concrete column such that no portion of the connector extends beyond the cross-section of the wooden column. In an alternative embodiment, a jack screw extends from the distal end of the precast concrete column to provide height adjustment for the precast concrete column. In certain embodiments, an insert or tube is cast into the precast concrete column body to allow a fastener to traverse the precast concrete column body so that structural components of the building may be secured thereto.

Abstract: The present invention includes a prosthetic apparatus for reinforcing a top of a rotted/deteriorating upstanding pole. The prosthetic ensleeves the pole at its uppermost end to provide an elongate support on which insulators and other various equipment can be mounted in a secure fashion. The present invention may include diametrically opposed support stringers to increase support and rigidity. An embodiment may include pole access apertures, insulator cutouts, and bolt receiving channels. The present invention provides a simplistic and inexpensive fix to preexisting rotting utility poles while also enabling a safe and efficient installation.

Abstract: A fastening of a support rail for a photovoltaic module to a trapezoidal rib of a trapezoidal sheet. The support rail comprises an undercut groove with a groove opening. The trapezoidal rib comprises an upper side and a slanted side. The support rail is positioned transversely to the trapezoidal rib. The fastening includes at least one retaining element comprising a fastening section fastened to the slanted side of the trapezoidal rib, and an engaging extension non-detachably arranged thereon. The engaging extension engages the undercut groove in an engaging position. The engaging extension is insertable through the groove opening into the undercut groove of the support rail in a loose position that is rotated relative to the engaging position. The support rail is held down against the upper side of the trapezoidal rib by the engaging extension. The at least one retaining element is arranged either left or right of the trapezoidal rib.

Abstract: An anchoring system to secure a mounting plate at a base of a pole or column to a concrete foundation includes a plurality of base plates. Each base plate has a planar surface, center-point, and plurality of fastener openings spaced about the center-point. A plurality of concrete anchoring fasteners having a common cross-sectional diameter secures each base plate to the foundation. An attachment bolt at the center-point of each base plate extends perpendicular to the planar surface for securing through an attachment bolt opening inside a peripheral edge of the mounting plate. The anchoring fasteners for securing the base plates to the foundation are spaced apart no less than ten times the common cross-sectional diameter.

Abstract: In a column structure, a steel column having a web and flanges integrally provided to both sides in a width direction of the web is welded to a base plate. First anchor bolts and second anchor bolts are anchored in foundation concrete. The base plate is fixed to the first anchor bolts at an opposite side to the web with respect to the flanges, and fixed to the second anchor bolts at a web side with respect to the flanges. The load bearing ability of a column setup can therefore be efficiently exhibited, and a thickness dimension of the base plate can be reduced.

Abstract: A foundation anchor for forcefittingly anchoring an industrial-scale machine in a concrete foundation, comprising an anchor casing that has at least one lateral wall, and a plurality of anchor rods that are attached to the anchor casing, said anchor casing comprising a securing section for securing the industrial-scale machine by means of securing bolts, and the anchor rods being connected to the at least one lateral wall such that forces are introduced from the at least one wall into the plurality of anchor rods in a substantially linear manner along the longitudinal extension axis of said anchor rods is provided.

Abstract: In a column structure, a steel column having flanges integrally provided at both width direction ends of a web is welded to a base plate. The base plate is also fixed to first anchor bolts and to second anchor bolts, with the first anchor bolts and the second anchor bolts disposed at the opposite side of the flanges to the web. The second anchor bolts are also disposed at the web width direction inside with respect to the first anchor bolts. Therefore, load bearing ability of a column seat can be efficiently exhibited, and the thickness dimension of the base plate can be reduced.

Abstract: A building structure is supported above a foundation and above grade by a moment frame comprising a plurality of columns and beams. The columns are all generally similar and the beams are all generally similar, such that each column can be attached with up to four beams. The moment frame is secured to a foundation, which may include pilings extending downwardly into the ground. The foundation can include a concrete foundation member or a foundation framework comprising a plurality of attachment members secured together by beams. The pilings can include helical flighting.

Abstract: In a column base joint structure, an anchor bolt and a column installed upright on a groundsel are tightly joined using groundsel-side and column-side hardware pieces. The groundsel-side hardware piece includes groundsel-embedded and upper fitting tenon portions. A fitting hole for the upper fitting tenon portion of the groundsel-side hardware piece is formed in a base of the column. The column-side hardware piece includes a lower projecting portion projecting downward from a top face portion to the inside of the fitting hole, and a column-embedded portion positioned above the top face portion. A pin locking hole in the upper fitting tenon portion of the groundsel-side hardware piece and a pin locking hole in the lower projecting portion of the column-side hardware piece are mutually aligned, a driftpin is hammered into the aligned pin locking holes, and the anchor bolt and the column are thereby tightly joined to each other.

Abstract: In a column structure (10), a steel column (30) is joined to a base plate (16A). The steel column (30) is configured by a web (30A) and a pair of flanges (30B) provided at each of two width direction ends of the web (30A). A base plate (16A) is provided to first anchor bolts (24) and second anchor bolts (26) that are fixed to a foundation 12. The second anchor bolts (26) are provided further toward the web (30A) width direction inside than the first anchor bolts (24), and the yield deformation of the second anchor bolts (26) is set smaller than the yield deformation of the first anchor bolts (24).

Abstract: A method of erecting a pylon, in particular a pylon of a wind power installation, which has a foundation with segment anchors, wherein connecting elements project beyond the top side of the foundation by a predetermined amount. A ring is leveled, aligned and fixed at the top side of the foundation. A gap produced by leveling, aligning and fixing of the ring is underlaid with a grouting material. The grouting material is set and a lower pylon segment is placed on the leveled, aligned and fixed ring and connected thereto.

Abstract: A monopole hollow strengthening tower is provided comprising stages that each comprise a pair of half-pipe sections that fit around the monopole. Each pair of sections is connected to the stage below and to each other. A first stage is connected to the footing of the monopole, a second stage is connected to the top of the first stage and includes cable ports. Subsequent stages extend above the second stage, finally there is a top stage which incorporates a clamping system to grip the monopole. This stage is the only stage above the footing where the monopole and the strengthening tower are in contact with each other.

Abstract: An article of elongate metal piece (101a) comprising a retaining track (102a) and a shaft (103a) at its respective long edges, wherein multiple pieces (101a) of the identical articles are arranged in a side-by-side fashion to assemble a pole section with two contiguous arranged metal pieces (101a) interlocked by engaging the shaft (103a) of one metal piece to the retaining track (102a) of another adjacent metal piece.

Abstract: A precision fabrication form system for preparing a poured-concrete (with upwardly projecting anchor bolts) footing for anchorably supporting the base of an elongate, upright, structural-frame column. The system includes a reversibly stackable plurality of independent, intercooperative, fabrication-form templates—grade, pedestal, base-plate, anchor-bolt and centerline—reversibly assembleable in a predetermined stack order above a prepared ground excavation into which concrete pouring to be associated with such a footing is to occur, certain ones of these templates being infinitely adjustable relative to one another and to the ground in both pre-pour and post-pour conditions to accommodate staged, precision, X-axis, Y-axis, Z-axis, and pitch, roll and yaw axes dispositions for the concrete and anchor bolts in such a footing.

Abstract: A foundation anchor for forcefittingly anchoring an industrial-scale machine in a concrete foundation, comprising an anchor casing that has at least one lateral wall, and a plurality of anchor rods that are attached to the anchor casing, said anchor casing comprising a securing section for securing the industrial-scale machine by means of securing bolts, and the anchor rods being connected to the at least one lateral wall such that forces are introduced from the at least one wall into the plurality of anchor rods in a substantially linear manner along the longitudinal extension axis of said anchor rods is provided.

Abstract: A concrete tower construction has a foundation and a plurality of prefabricated concrete tower elements, each having an outside, an inside, a material thickness provided there between, and top and bottom surfaces. The tower elements have hollow centers and are arranged one tower element on top of another, forming a column on top of the foundation. Plural tendons arranged in the hollow center apply tension force to the column. An upper force distribution element is arranged on top of the column, and a lower force distribution element is arranged in the foundation. Each tendon is connected to the upper force distribution element and the lower force distribution element by cooperating attachments. Methods of erecting the tower construction, tower elements and a foundation are described.

Abstract: A ground-anchored umbrella stand comprises a base unit which is to be anchored in the ground and includes a soil sleeve extending into the soil. A pole mounting unit, in which the pole is inserted, is fastened to the base unit so as to be able to tilt relative to the base unit in all directions in space. An adjustment and locking mechanism between the base unit and the pole mounting unit allows tilting and aligning the pole mounting unit in all directions.

Abstract: An anchor for attaching a structure to a concrete structure, comprises an anchor rod having a lower threaded portion for being embedded in a concrete structure and an upper portion for extending outside the concrete structure; an anchor body including a first threaded central opening for threadedly receiving one end portion of the lower threaded portion; and a support including a floor. The support includes a second central threaded opening through the floor portion for threadedly receiving another end portion of the lower portion.

Abstract: A bridge system is provided that utilizes foundation structures that are formed of the combination of precast and cast-in-place concrete. A method of constructing the combination precast and cast-in-place concrete foundation structures involves receiving at a construction site a precast concrete foundation unit having elongated upright wall members that define a channel therebetween, and multiple upright supports located within the channel; placing the precast concrete foundation unit at a desired use location; delivering concrete into the channel while the precast concrete foundation unit remains at the desired use location; and allowing the concrete to cure-in-place such that the elongated upright wall members are connected to the cured-in-place concrete by reinforcement embedded within both the cured-in-place concrete and the upright wall members. The bridge units may be placed before the pouring step to embed the bottoms of the bridge units in the cast-in-place concrete.

Abstract: A tower base ring assembly is provided for securing a wind turbine tower to a foundation. A top ring is configured for securing to a wind turbine tower. A bottom ring has an open center and a plurality of radially oriented troughs spaced circumferentially about the open center, with each trough having an outer end. The top ring and the bottom ring are detachable from one another, and the tower base ring assembly is connectable to the foundation.

Abstract: A mounting base (10A) that shortens construction time and reduces cost is formed from a metal foundation (16), a metal cover (17), height-adjusting bolts (18), support bolts (19), and mortar (20). In the base (10A), the first fixed ends (47) of the bolts (19) are inserted into support bolt insertion holes (39) formed in a metal plate (24) and are fixed to the metal plate (24) with nuts (50), and the second fixed ends (48) of the bolts (19) are fixed to a concrete slab (12) with nuts (51). The portion of the first fixed ends (47) of the bolts (19) which extends between the metal plate (24) and the top surface of the concrete slab (12) is integrated with the mortar (29) filled into the space (46), and the metal cover (17) covers the opening (27) at the top of a metal tube (23).

Abstract: The present invention discloses a unitized precast grillage foundation for supporting a structure comprising: a plurality of anchoring elements defining a grid for resting on an underlying surface; a base connected on the grid, the base comprising at least a first footing and a second footing spaced apart and at least one connecting member between and connected to the at least first footing and the second footing; and a beam-column projecting upwardly from the base, and a method of making same.

Abstract: A take-up fastener is disclosed for fastening a level in a frame construction to the level below so as to resist upward forces generated by wind and other sources on the framed construction. The take-up fastener in general includes a take-up plate, or washer, fastened to a portion of the upper level and a take-up screw fit through the take-up plate and fastened to the adjacent level below. Once the take-up fastener is fully assembled, the take-up plate includes a pair of tabs which are capable of engaging threads on a take-up screw in a way that allows one-way motion of the take-up screw relative to the take-up plate. In particular, the take-up plate can move downward relative to the take-up screw, for example on constricting of the wooden members to which the take-up plate is affixed. However, the engagement between the take-up plate and take-up screw prevents movement of the take-up plate upward with respect to the take-up screw, for example upon an upward load due to wind or other external force.

Abstract: A post-tensioned continuous strand hoop reinforcement for concrete foundations is provided. The post-tensioned continuous strand hoop reinforcement compresses the concrete to prevent cracking and significantly reduces foundation deflection and distortion which increases rotational stiffness in anchor caps, spread foundations, and like foundation configurations.

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 include 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.