A cooling tower structure having a concrete perimeter foundation wall with a perimeter rebar grouping. The structure includes at least four columns formed of CMU blocks with at least two columns being freestanding and positioned approximate corners of the foundation wall. Each column further includes a column rebar grouping being tied into the perimeter rebar grouping. At least three bond-beams formed of CMU blocks are connected between the columns at least four feet above the foundation. The bond-beams include beam rebar groupings tying into at least one of the column rebar groupings. The structure includes housing walls formed of CMU blocks extending upward from the bond beams. At least one fan is on at least one pedestal column positioned within the foundation wall, with a pedestal rebar grouping extending though the pedestal column from a concrete pedestal footing. A series of water collection troughs are positioned within the cooling tower above the fan and fill media is positioned in the cooling tower above the collection troughs.

A permanent form (13) serving to form concrete structures and comprising sidewalls (11) comprises: an interior form (14) that forms the inner face of a side wall; an exterior form (16) that forms the outer face of the sidewall; and a plurality of vertical reinforcements (17) that are disposed between the interior form and the exterior form and that hold the exterior form alone or together with the interior form. The exterior form and the interior form have: a plurality of base plates (18) that are formed from plastic into square plates and that are aligned so as to be in firm contact with each other in the vertical and horizontal directions; a plurality of central reinforcement plates (19) that are formed from plastic into square plates substantially equal in size to the base plates, that join four adjacent base plates, and that are aligned so as to be in firm contact with each other in the vertical and horizontal directions; and a plurality of end reinforcement plates (21) that are formed from plastic into rectangular plates are arranged into a quadrangular frame so as to join adjacent base plates while being located on the outer edges of the plurality of central reinforcement plates aligned so as to be in firm contact with each other in the vertical and horizontal directions.

A precast concrete structure formed of a cementitious mixture is provided, the cementitious mixture comprising a mixture of: (a) cement, (b) silica fume, (c) supplemental material (limestone and/or slag), (d) masonry sand, (e) water and ice (f) plasticizers and (g) workability admixtures. The result is an improved concrete for use in the formation of long span bridge elements that are simple and safe to manufacture and having improved properties. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.

A precast concrete structure formed of a cementitious mixture is provided, the cementitious mixture comprising a mixture of: (a) cement, (b) silica fume, (c) supplemental material (limestone and/or slag), (d) masonry sand, (e) water and ice (f) plasticizers and (g) workability admixtures. The result is an improved concrete for use in the formation of long span bridge elements that are simple and safe to manufacture and having improved properties. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.

A dry process connected energy-consuming beam column joint based on a corbel includes a prefabricated concrete corbel column, pre-buried steel plates and connecting steel plates, wherein the corbel section of the prefabricated concrete corbel column is stepped, and a notch section of a prefabricated concrete notch beam is matched with the stepped section of the corbel and is in lap joint to the stepped section; the pre-buried steel plates are separately pre-buried on the upper and lower surfaces of the corbel and the prefabricated concrete notch beam, friction plates are arranged outside the pre-buried steel plates, and slight tooth spaces are arranged on the sides, facing the pre-buried steel plates, of the friction plates; and the connecting steel plates are arranged on the left and right sides of the prefabricated concrete notch beam and the corbel lap joint section.

A dry process connected energy-consuming beam column joint based on a corbel includes a prefabricated concrete corbel column, pre-buried steel plates and connecting steel plates, wherein the corbel section of the prefabricated concrete corbel column is stepped, and a notch section of a prefabricated concrete notch beam is matched with the stepped section of the corbel and is in lap joint to the stepped section; the pre-buried steel plates are separately pre-buried on the upper and lower surfaces of the corbel and the prefabricated concrete notch beam, friction plates are arranged outside the pre-buried steel plates, and slight tooth spaces are arranged on the sides, facing the pre-buried steel plates, of the friction plates; and the connecting steel plates are arranged on the left and right sides of the prefabricated concrete notch beam and the corbel lap joint section.

A lifting device comprises a main body, a clasping assembly, a first shaft and a second shaft. The main body comprises a first through hole, a second through hole and a third through hole therein. The clasping assembly comprises a closed-loop structure configured to be engaged with the third through hole. The first shaft is adapted to be inserted into the first through hole of the main body, and the second shaft is adapted to be inserted into the second through hole of the main body. The main body comprises positioning slots therein and the first and the second shafts have positioning elements thereon. The positioning slots collaborate with the positioning elements to prevent the first and the second shafts from falling out of the first and the second through holes of the main body.

The invention relates to a supporting beam, in particular of composite design, for slab systems, in particular of composite design, wherein the supporting beam extends in a longitudinal direction and has: a support extending in the longitudinal direction, in particular a steel support, which is formed in at least two pieces and has at least two support parts which each extend in the longitudinal direction.

The invention relates to a supporting beam, in particular of composite design, for slab systems, in particular of composite design, wherein the supporting beam extends in a longitudinal direction and has: a support extending in the longitudinal direction, in particular a steel support, which is formed in at least two pieces and has at least two support parts which each extend in the longitudinal direction.

A blockout apparatus, for use in creating passageways through prefabricated concrete structural members, has at least one hanger members integrally molded with the blockout apparatus as a dome projecting above the body of the blockout member that can be used to support conduits inserted through the passageway. A wedge nut can be inserted into the hanger members and twisted to lock the wedge nut in place. The wedge nut can be installed before the blockout apparatus is positioned within the concrete form for the manufacture of the prefabricated concrete structural member, or after the concrete structural member has been formed. Typical usage of the blockout apparatus is to create passageways through the T-Beam of Double-T panels so that conduits can pass through the void corresponding to the blockout apparatus. Mounting devices that support the conduits can be engaged with the wedge nut and provide support for one or multiple conduits.