A core-pulling transfer device for reverse demolition of reinforced concrete structures comprises temporary supports, long-stroke hydraulic jacks and steel crossbeams. The temporary supports are supported on bottom surfaces of bottom crossbeams of the reinforced concrete structure, and a beam end through hole is formed in each end, connected with a force-transmitting structure column, of each bottom crossbeam. Two long-stroke hydraulic jacks are symmetrically arranged on both sides of each force-transmitting structure column. Core-pulling holes are formed in upper end sides of demolition floor structure columns. One steel crossbeam is in clearance fit with each core-pulling hole, and both ends of each steel crossbeam extend out of the corresponding core-pulling hole. The device can quickly carry out vertical load transfer of the reinforced concrete structure, smoothly transfer vertical force, and achieve a safe reverse demolition construction process.

A self-aligning and torque transmitting coupler assembly includes an outer coupler coupled to a first shaft of and an inner coupler coupled to a second shaft. The outer coupler comprises an inner surface having primary and secondary alignment and torque transmitting features, and the inner coupler comprises an outer surface having primary and secondary alignment features. The primary and secondary alignment features are configured to interlock and facilitate alignment of the first and second shafts along a common axis in an exemplary application of a foundation support system.

Systems and methods which provide for lifted foundation retention using foundation lift retainer assemblies having a locking cap configuration are described. A locking cap foundation retention system of embodiments may include a foundation lift interface assembly supporting operations to lift a foundation and a foundation lift retainer assembly having a locking cap configuration utilized in sustaining the foundation in a lifted position. A locking cap of embodiments is configured to accommodate operation of a removable lift mechanism lifting a foundation and thereafter for sustaining the foundation in the lifted position. A foundation lift interface may be configured to allow a foundation to move with respect to components of a foundation lift retainer assembly during a foundation lifting operation, whereby the locking cap of the foundation lift retainer assembly engages one or more components of the foundation lift interface to restrict movement of the foundation subsequent to the foundation lifting operation.

A modular foundation support system includes modular foundation support components including self-aligning and torque transmitting coupler features wherein a plurality of axially elongated ribs are aligned with a plurality of axially elongated ribs on a second distal end to rotationally interlocked the modular foundation support components to one another. First and second pair of fastener holes are self-aligning with one another to receive a fastener therethrough such that the fastener is mechanically isolated from rotational torque transmission.

A system and method for raising a structure, or part thereof, the system comprising vertical jack members connected and disposed about a rail system attached about the periphery of the structure. The vertical jack members comprise an outer sleeve and a slidable inner portion that is driven vertically by a jack screw and drive block. Extensible diagonal cross-braces stabilize the jack members and structure being raised.

A leveling apparatus many be used for building new construction or for releveling an existing structure. A user may place a leveling apparatus between a pier and a beam of a pier and beam foundation. The leveling apparatus may include a bottom plate that rests on the pier and a top plate that supports the beam. The bottom plate and the top plate may be separated by threaded rods. The leveling apparatus may be sufficiently small that it may fit between the pier and beam in situations where space may be limited. The user may rotate one or more nut fasteners to adjust the height between the bottom plate and the top plate. Adjusting the separation between the plates can result in leveling of a floor by adjusting the spacing between a beam and the ground.

A method of repairing a tilt wall construction includes affixing a fixture at a bottom of the wall, installing a piling into the earth directly below the fixture, forming a support member having a link corresponding to a distance between the fixture and a head the piling, and affixing the support member to the fixture and to the head such that the piling supports the wall. The fixture is an angle member that is anchored to the wall. A plate is affixed onto a top surface of the head of the piling. The support member can include a pair of steel pipes that are welded at one end to the plate and an opposite end welded to the angle member.

A building system for fabricating a multi-storey building structure, the system comprising at least one first building structure and at least one second building structure and a way for elevating the second building structure to allow provision of the first building structure under the elevated building structure. A method for fabricating a multi-storey building structure, the method comprises the steps of providing a second building structure; elevating the second building structure; providing a first building structure under the elevated second building structure; and lowering the second building structure onto the first building structure. There is also provided the elevating means, such as jacks for elevating the building structure.

Aspects herein relate to using motor velocity as feedback for controlling the extension or retraction of jacks for control of the angular orientation of a structure, or other means for accomplishing the same. Embodiments include a structure orientation control apparatus comprising one or more jacks configured to support a structure, one or more jack drive mechanisms coupled to at least one of the one or more jacks, the one or more jack drive mechanisms configured to extend or retract the one or more jacks, and a jack controller configured to cause the one or more jack drive mechanisms to extend or retract the one or more jacks based on a jack command. The jack controller may be configured to monitor one or more jack velocities during extension or retraction.

Methods of lifting structures such as a wall of a building. A fluid that is under pressure is injected beneath the base of the wall. The pressure of the injected fluid acts against the base of the wall to lift the wall vertically. In some embodiments, a supplemental lifting force mechanism can be attached to the wall to apply a supplemental lifting force to the wall that acts together with the lifting force applied by the injected fluid. The supplemental lifting force lightens the wall, reducing the amount of lifting force required to be applied to the wall by the injected fluid.