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

Abstract: A method for making a prefabricated, prestressed module includes arranging one or more steel beams atop a supporting formwork element in a direction transverse to the supporting formwork element and arranging one or more precast deck elements across the one or more steel beams to create a substantially continuous surface. The one or more precast deck elements have pockets for receiving connectors that protrude from the one or more steel beams. The method also includes arranging the supporting formwork element to allow the one or more steel beams to bend into a cambered shape to impart compressive stresses to a bottom flange of the one or more steel beams and tension stresses to a top flange of the one or more steel beams and inserting grout into the pockets to hold the cambered shape and to bond the one or more precast deck elements to the connectors and the top flange.

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

Abstract: A method for making a prefabricated, prestressed module includes arranging one or more steel beams atop a supporting formwork element in a direction transverse to the supporting formwork element and arranging one or more precast deck elements across the one or more steel beams to create a substantially continuous surface. The one or more precast deck elements have pockets for receiving connectors that protrude from the one or more steel beams. The method also includes arranging the supporting formwork element to allow the one or more steel beams to bend into a cambered shape to impart compressive stresses to a bottom flange of the one or more steel beams and tension stresses to a top flange of the one or more steel beams and inserting grout into the pockets to hold the cambered shape and to bond the one or more precast deck elements to the connectors and the top flange.

Abstract: A method for making a prefabricated, prestressed module includes arranging one or more steel beams atop a supporting formwork element in a direction transverse to the supporting formwork element and arranging one or more precast deck elements across the one or more steel beams to create a substantially continuous surface. The one or more precast deck elements have pockets for receiving connectors that protrude from the one or more steel beams. The method also includes arranging the supporting formwork element to allow the one or more steel beams to bend into a cambered shape to impart compressive stresses to a bottom flange of the one or more steel beams and tension stresses to a top flange of the one or more steel beams and inserting grout into the pockets to hold the cambered shape and to bond the one or more precast deck elements to the connectors and the top flange.

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

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

Abstract: 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.

Abstract: A connection system for stabilizing an earth wall is disclosed. The system may include a geosynthetic loop assembly partially embedded within a concrete panel. The geosynthetic loop assembly may include a plurality of spaced apart geosynthetic loops that may be connected by at least one transverse geosynthetic strip. The geosynthetic loops are partially embedded within the concrete panel and partially extending from a front face of the concrete panel in generally aligned relationship. The system may also include a geosynthetic reinforcement web including a plurality of longitudinal geosynthetic strips and a plurality of transverse geosynthetic strips. The web may be folded to form a fold and the longitudinal strips adjacent the fold may be positioned adjacent the geosynthetic loops extending from the front face of the concrete panel in aligned relationship to form a passageway.

Abstract: A method for making a prefabricated, prestressed module includes arranging one or more steel beams atop a supporting formwork element in a direction transverse to the supporting formwork element and arranging one or more precast deck elements across the one or more steel beams to create a substantially continuous surface. The one or more precast deck elements have pockets for receiving connectors that protrude from the one or more steel beams. The method also includes arranging the supporting formwork element to allow the one or more steel beams to bend into a cambered shape to impart compressive stresses to a bottom flange of the one or more steel beams and tension stresses to a top flange of the one or more steel beams and inserting grout into the pockets to hold the cambered shape and to bond the one or more precast deck elements to the connectors and the top flange.

Abstract: A connection system for stabilizing an earth wall is disclosed. The system may include a geosynthetic loop assembly partially embedded within a concrete panel. The geosynthetic loop assembly may include a plurality of spaced apart geosynthetic loops that may be connected by at least one transverse geosynthetic strip. The geosynthetic loops are partially embedded within the concrete panel and partially extending from a front face of the concrete panel in generally aligned relationship. The system may also include a geosynthetic reinforcement web including a plurality of longitudinal geosynthetic strips and a plurality of transverse geosynthetic strips. The web may be folded to form a fold and the longitudinal strips adjacent the fold may be positioned adjacent the geosynthetic loops extending from the front face of the concrete panel in aligned relationship to form a passageway.

Abstract: A loop and saddle assembly includes a loop member and a saddle member. The loop member may include multiple layers (preferably 4 layers) of a geosynthetic material. The saddle member may have a curved seating surface adapted for cooperative engagement with the inner surface of the loop member. The saddle member may include a first generally planar truncated end at a first end of the curved seating surface and a second generally planar truncated end at a second end of the curved seating surface. The saddle member may include a lower surface with a concave profile extending from the first truncated end to the second truncated end. The loop member may be cast into a precast concrete panel with a portion of the loop member extending out of the precast concrete panel. The saddle member may be disposed in cooperate engagement with the loop member inside the loop member.

Abstract: A crimped connection system and methods for use in connection with the construction of earth walls is disclosed. A grid-type soil mat may be provided with a number of crimped ends. The crimped ends may be adapted for engagement through the use of a locking member with another soil mat or with a plurality of anchors partially embedded within a precast concrete panel. The plurality of anchors may be formed as part of a gang or unitary structure to facilitate alignment of the anchors when being cast into the precast concrete panels.

Abstract: A loop and saddle assembly includes a loop member and a saddle member. The loop member may include multiple layers (preferably 4 layers) of a geosynthetic material. The saddle member may have a curved seating surface adapted for cooperative engagement with the inner surface of the loop member. The saddle member may include a first generally planar truncated end at a first end of the curved seating surface and a second generally planar truncated end at a second end of the curved seating surface. The saddle member may include a lower surface with a concave profile extending from the first truncated end to the second truncated end. The loop member may be cast into a precast concrete panel with a portion of the loop member extending out of the precast concrete panel. The saddle member may be disposed in cooperate engagement with the loop member inside the loop member.

Abstract: A crimped connection system and methods for use in connection with the construction of earth walls is disclosed. A grid-type soil mat may be provided with a number of crimped ends. The crimped ends may be adapted for engagement through the use of a locking member with another soil mat or with a plurality of anchors partially embedded within a precast concrete panel. The plurality of anchors may be formed as part of a gang or unitary structure to facilitate alignment of the anchors when being cast into the precast concrete panels.