A tub girder for use in road construction in connection with concrete bridges may include upper flanges that extend inwardly or outwardly and may be provided with camber along the length of the girders. Ends of the tub girders may be provided with diaphragms and may include a base section including one more access ports for enabling inspection of the interior of the girders after installation. The tub girders may include a plurality of stud members extending upwardly from upper flanges for engaging with a concrete bridge deck. The tub girders may be provided with a coating, such as galvanized, aluminized or metalized, to fight corrosion and extend life and limit need for inspection.

A tub girder for use in road construction in connection with concrete bridges may include upper flanges that extend inwardly or outwardly and may be provided with camber along the length of the girders. Ends of the tub girders may be provided with diaphragms and may include a base section including one more access ports for enabling inspection of the interior of the girders after installation. The tub girders may include a plurality of stud members extending upwardly from upper flanges for engaging with a concrete bridge deck. The tub girders may be provided with a coating, such as galvanized, aluminized or metalized, to fight corrosion and extend life and limit need for inspection.

A composite bridge deck including U shaped reinforced concrete and steel girders, and construction methods thereof. The bridge deck consists of a plurality of steel main girders with unsymmetrical top flange, the plurality of cross girders being connected above bottom flange of main girders and U shaped RCC girder comprising of concrete flange above main girder, web and deck slab above cross girder. Inspection path/crash barrier provided for Rail/Road. This bridge deck is adoptable up to 3 Tracks/four lane Roads. In Cast in situ construction, main girders are placed over supports. Cross girders are connected and concreted. In precast construction, main girder with top slab is precast and placed over supports. Two or more cross girders with precast slab are connected to web of main girder. Concrete web portion is cast in situ.

A composite bridge deck including U shaped reinforced concrete and steel girders, and construction methods thereof. The bridge deck consists of a plurality of steel main girders with unsymmetrical top flange, the plurality of cross girders being connected above bottom flange of main girders and U shaped RCC girder comprising of concrete flange above main girder, web and deck slab above cross girder. Inspection path/crash barrier provided for Rail/Road. This bridge deck is adoptable up to 3 Tracks/four lane Roads. In Cast in situ construction, main girders are placed over supports. Cross girders are connected and concreted. In precast construction, main girder with top slab is precast and placed over supports. Two or more cross girders with precast slab are connected to web of main girder. Concrete web portion is cast in situ.

A method of reinforcing a structure comprising a wall built on a reinforced concrete stem wall may include removing concrete from the reinforced concrete stem wall at an exterior of the structure to expose the reinforcing material within the stem wall and create a space within the stem wall. A degraded portion of the of the reinforcing material may be removed. A hold-down may be partially disposed within the wall inserting, from below the wall, such that an upper portion of the hold-down is disposed within the wall and a lower portion of the hold-down extends into the space within the stem wall. A horizontal composite bar may be coupled to the exposed reinforcing material and to the lower portion of the hold-down. A cementitious material may be disposed in the space within the stem wall, around the lower portion of the hold-down, and around the horizontal composite bar.

A method of reinforcing a structure comprising a wall built on a reinforced concrete stem wall may include removing concrete from the reinforced concrete stem wall at an exterior of the structure to expose the reinforcing material within the stem wall and create a space within the stem wall. A degraded portion of the of the reinforcing material may be removed. A hold-down may be partially disposed within the wall inserting, from below the wall, such that an upper portion of the hold-down is disposed within the wall and a lower portion of the hold-down extends into the space within the stem wall. A horizontal composite bar may be coupled to the exposed reinforcing material and to the lower portion of the hold-down. A cementitious material may be disposed in the space within the stem wall, around the lower portion of the hold-down, and around the horizontal composite bar.

The present invention is a modular structural building method consisting of prefabricated, precast, composite reinforced concrete raised floor and steel beam panels with adjustable levelling connection assemblies between panels, supported by columns. The system has the ability to accommodate the use of the floor by construction personnel during the on-site assembly process. The perimeter of the raised floor slab can be provided with ducts for a field installed conventional reinforcement means to create a continuous structural diaphragm for the floor panel.

The present invention is a modular structural building method consisting of prefabricated, precast, composite reinforced concrete raised floor and steel beam panels with adjustable levelling connection assemblies between panels, supported by columns. The system has the ability to accommodate the use of the floor by construction personnel during the on-site assembly process. The perimeter of the raised floor slab can be provided with ducts for a field installed conventional reinforcement means to create a continuous structural diaphragm for the floor panel.

The present invention is a steel beam (10) having a steel profile (20) comprising a lower head (23) and an upper head (21) which is substantially parallel to said lower head (23), characterized by comprising cables (42) provided under the steel profile (23) along the length of the steel profile (20) and to which tensioning process is applied, and a lower reinforcing concrete (40) embodied by the steel profile (20) lower head (23) in the form of a layer in a manner covering the cables (42) so as to fix said cables (42) at their positions and tensions.

The present invention is a steel beam (10) having a steel profile (20) comprising a lower head (23) and an upper head (21) which is substantially parallel to said lower head (23), characterized by comprising cables (42) provided under the steel profile (23) along the length of the steel profile (20) and to which tensioning process is applied, and a lower reinforcing concrete (40) embodied by the steel profile (20) lower head (23) in the form of a layer in a manner covering the cables (42) so as to fix said cables (42) at their positions and tensions.