A sleeve lock locks concrete reinforcing steel bars within rigid support structure retainers for stabilizing the reinforcing bars in place, while allowing the bars to spin freely within sleeves or holes within the retainers. The sleeve locks are stable couplings holding concrete reinforcing bars in position while allowing the bars to spin within the couplings. This reduces the need for tightening locks or fasteners at elevated heights of vertically positioned concrete reinforcing steel bars.

A method for building a mechanical secured block structure, including placing a footer block on a desired surface, inserting two respective starter bar nuts into the footer block, inverting the footer block, placing a first concrete masonry unit over respective first and second anchor bars, aligning the first concrete masonry unit with the footer block, placing second and third footer blocks adjacent the first footer block, placing a second concrete masonry unit adjacent the first concrete masonry unit, positioning each respective concrete masonry unit to equally straddle two adjacent footer blocks, positioning respective anchor bars atop respective concrete masonry units, and bolting respective concrete masonry units to respective footer blocks to interconnect the two respective concrete masonry units and the three respective footer blocks to define a contiguous wall. Each respective masonry unit and each respective footer block are post tensioned to be under compression.

In an LNG tank, a dike is formed by arranging precast blocks in the circumferential direction and layering the precast blocks in the vertical direction. Each of the precast blocks has loop joints on the top, bottom, left, and right side faces, and concrete is deposited between each two precast blocks adjacent in the circumferential direction and the vertical direction, whereby masonry joints are formed in the vertical direction and the circumferential direction. Prestress is imparted to the dike by PC steel members. The PC steel members are provided in the circumferential direction and the vertical direction of the dike, and are arranged so as to avoid the masonry joints in the circumferential direction and the vertical direction. Therefore, it is possible to construct the dike in a short time, and it is possible to provide a tank or the like that can reduce the construction period.

A module for realizing modular building structures comprises a bearing block having pairs of flat faces with complementary shaped joints for coupling with further similar modules arranged in side by side position, means for anchoring the bearing block to bearing blocks of side-by-side modules for realizing the building structure. The anchoring means comprise one pair of passages mutually perpendicular and staggered along a first transverse direction, the passages extending in the block from respective flat faces. The anchoring means also comprise reinforcing bars adapted to be inserted in a pair of consecutive passages belonging to two mutually side-by-side modules to define a reinforcement meshed armor. Each bar has ends associated with male and female connecting elements for coupling with facing ends of contiguous bars belonging to a side-by-side module.

The invention comprises a product. The product comprises a foam insulating panel, the panel having a first primary surface and an opposite second primary surface, wherein the foam insulating panel defines at least one recessed channel in the first primary surface, the at least one recessed channel being sized and shaped to provide a mold for a structural reinforcing member. The product also comprises a concrete panel formed on the first primary surface and filling the at least one recessed channel so as to provide a structural reinforcing member for the concrete panel. The product further comprises an elongate anchor member in the foam insulating panel and extending from the first primary surface of the foam insulating panel into the concrete panel. A method of making a composite reinforced insulated concrete structure is also disclosed.

A structure, in particular, a wind turbine tower (1), which is pre-tensioned with at least one tensioning element (3), has a foundation (2), a concrete tower section (4), in particular, consisting of a plurality of precast concrete elements (5), as well as a head piece (6), wherein the tensioning element (3) at least at one of its ends has a tendon anchor (7, 7a, 7b). The tendon anchor (7, 7a, 7b) has an accommodation (8) in which a first end (10a) of an anchor rod (9) is fastened, in particular screwed in. A second end (10b) of the anchor rod (9) is anchored to the foundation (2) or to the head piece (6). In a corresponding method for manufacturing a structure, a first end (10a) of an anchor rod (9) is fastened, in particular screwed in an accommodation (8) of a tendon anchor (7, 7a, 7b), and a second end (10b) of the anchor rod (9) is anchored to the foundation (2) or to the head piece (6).

A barrier cable coupler for coupling two lengths of barrier cable comprises a coupler body including a threaded inner surface, a first end, and a second end; a fixed retaining collar having an outer surface and being retained to the first end of the coupler body, the fixed retaining collar including a tapered inner surface; one or more fixed end wedges positioned within the tapered inner surface of the fixed retaining collar; a tensioning retaining collar having an outer surface, the tensioning retaining collar positioned at least partially within the second end of the coupler body and including a tapered inner surface; one or more tensioning end wedges positioned within the tapered inner surface of the tensioning retaining collar; and a tensioning nut including a threaded outer surface engaging the threaded inner surface of the second end of the coupler body and retaining the tensioning retaining collar therein.

A pocket former may include a pocket former body, the pocket former body having an outer surface. The pocket former may further include a collapsible element, the collapsible element formed on the outer surface of the pocket former body. The collapsible element may extend radially outwardly from the pocket former body.

An anchor is disclosed. The anchor may include an anchor body, the anchor body having an internal passage, and a lock nut, the lock nut having an internal tapered surface defining a forcing cone. The lock nut may be coupled to the anchor body. The anchor may also include a spindle, the spindle positioned within the internal passage and threadedly coupled to the lock nut. The spindle may have an expansion wedge.

A system for post tensioning a concrete member is disclosed. The system may include an anchor body, and a strand, the strand inserted through the anchor body. The strand may have a strand end and an outer diameter. The system may also include a pocket cap, the pocket cap positioned around the strand. The pocket cap may have a cylindrical interior wall, the cylindrical interior wall having a pocket cap diameter corresponding to the outer diameter of the strand.