A modular bridge is formed from a plurality of bridge modules (4), the bridge (2) having a longitudinal direction along the spanning direction and including: a first longitudinal compression member (11,13, 70) that is, in use, at an upper part of the bridge cross-section; a second longitudinal compression member (9, 72) that is, in use, at a lower part of the bridge cross-section; a structural lateral element (9) for forming a deck of the bridge or for supporting deck elements of the bridge; a shear element (14, 16) for carrying a shear load; and a tension member (6) applying a compressive force to one of the longitudinal compression members (1,13, 70); (9, 72) such that when in use the other of the longitudinal compression members (1,13, 70); (9, 72) forms a main compression element for the bridge (2) and the tension member (6) forms a main tension element for the bridge (2). The bridge modules (4) form segments of the length of the bridge (2) and each bridge module (4) is of a one-piece construction, this single piece including: a segment (10, 12) of the first longitudinal (1) compression member of the bridge; a segment (8) of the second longitudinal compression member of the bridge; a segment (8) of the structural lateral element; and a segment (14, 16) of the shear element; and the bridge modules being arranged to support a portion of the tension member (6).

A reconfigurable portable load bearing structure which can be configured into an extended load bearing configuration or a collapsed configuration, comprising of a first, second and third plurality of rail segments that are each rotatably coupled together and a plurality of support segments or pads which are configured to selectively couple and latch into one of a plurality of positions on said first, second and third plurality of rail segments.

This disclosure presents a new strategy for modular construction: an adjustable module. This disclosure develops a new adjustable module comprised of a four-bar linkage which can form more efficient variable depth structures. Applications can include rapidly erectable bridges, roofs, buildings, and grid shells, among others. This disclosure provides specific detail related to rapidly erectable bridge applications for variable depth arch forms. Existing rapidly erectable, steel panelized bridge systems have limited material efficiency as they are comprised of rigid modules in a girder-type configuration. This disclosure shows that the module can form variable depth three- and two-hinged arches which increase the material efficiency. The module and other arch components can be made of standard rolled steel sections, thereby forming a versatile, kit-of-parts systems.

Bridge including a bridge deck extending in a bridge direction or longitudinal direction of the bridge, and two prefab bridge railings situated on the longitudinal side of the bridge deck, wherein the bridge deck is substantially formed by one or more slabs spanning the bridge width, wherein the bridge railing includes a lower girder provided with a bearing, particularly a bearing edge, for a longitudinal edge strip of the bridge deck.

Bridge including a bridge deck extending in a bridge direction or longitudinal direction of the bridge, and two prefab bridge railings situated on the longitudinal side of the bridge deck, wherein the bridge deck is substantially formed by one or more slabs spanning the bridge width, wherein the bridge railing includes a lower girder provided with a bearing, particularly a bearing edge, for a longitudinal edge strip of the bridge deck.

A portable bridge includes a first end segment and a second end segment spaced apart. The first end segment and the second end segment are placed on opposite sides of an obstacle to be spanned by the portable bridge. A spanning segment is coupled between the first end segment and the second end segment for spanning the obstacle. The first end segment, the second end segment, and the spanning segment each include a plurality of parallel beams distributed across a width of the portable bridge. The plurality of parallel beams are aligned along a length of the portable bridge and the plurality of parallel beams are fixed to a top plate and a bottom plate.

A portable bridge includes a first end segment and a second end segment spaced apart. The first end segment and the second end segment are placed on opposite sides of an obstacle to be spanned by the portable bridge. A spanning segment is coupled between the first end segment and the second end segment for spanning the obstacle. The first end segment, the second end segment, and the spanning segment each include a plurality of parallel beams distributed across a width of the portable bridge. The plurality of parallel beams are aligned along a length of the portable bridge and the plurality of parallel beams are fixed to a top plate and a bottom plate.

A catwalk system having a pair of side trusses formed of a top cord and bottom cord connected by a plurality of vertical posts and diagonal posts. The bottom cords have a plurality of joints formed of a bottom plate, opposing side plates and wing plates that form a pocket. These pockets receive an end of floorbeams which are bolted to the side plates. The bottom plate also includes a wind brace section that receives an end of a diagonal wind brace therein. The fabricated side trusses are shipped to the job site where the catwalk is quickly and easily assembled by aligning a pair of side trusses in parallel space alignment and installing floorbeams in the pockets of opposing joints. To provide additional rigidity diagonal wind braces are installed in a zig-zag formation between diagonally opposite joints. This arrangement provides a quickly assembled catwalk that requires minimal assembly.

A catwalk system having a pair of side trusses formed of a top cord and bottom cord connected by a plurality of vertical posts and diagonal posts. The bottom cords have a plurality of joints formed of a bottom plate, opposing side plates and wing plates that form a pocket. These pockets receive an end of floorbeams which are bolted to the side plates. The bottom plate also includes a wind brace section that receives an end of a diagonal wind brace therein. The fabricated side trusses are shipped to the job site where the catwalk is quickly and easily assembled by aligning a pair of side trusses in parallel space alignment and installing floorbeams in the pockets of opposing joints. To provide additional rigidity diagonal wind braces are installed in a zig-zag formation between diagonally opposite joints. This arrangement provides a quickly assembled catwalk that requires minimal assembly.