A weldless grating comprising a plurality of longitudinal load bearing members, secondary load bearing members and/or tertiary load bearing members having a rod extending through the tertiary load bearing members and primary load bearing members locking the tertiary load bearing members in slots in the secondary load bearing members and locking the secondary load bearing members in slots in the primary load bearing members to form the grating.

A manhole frame assembly for supporting a member that can obstruct an access opening when the level of a construction material around the opening is raised, includes an outer frame member having a support surface and a side wall extending from the support surface. The side wall is constructed and arranged with an upper surface that is substantially flush with an original level of the construction material. An inner frame member can be received on the support surface and includes a surface for su...

An expansion joint and seal for an expansion joint for use in structures where the joint has an intersection uses a seal with a solid thick keel extending along a lower edge of a central portion in an area of the intersection. The keel commences in a transition area between a conventional seal and the intersection. The seal increases in depth as the intersection is approached until it reaches a maximum depth at a mid point of the intersection. The keel minimizes distortion from racking during ex...

A roadway guardrail system including a longitudinally extending guardrail supported by an array of spaced apart vertically mounted supporting posts and associated offset block whereas the supporting posts and/or the offset blocks are I beam shaped members.

An asphaltic concrete or paving material includes at least 5 percent, and preferably from 5 to 20 percent, of granular recycled plastic, which supplements or replaces the rock aggregate component of the mixture. The material produces a structurally superior paving material and longer lived roadbed. The plastic may include any and all residual classes of recyclable plastic, including thermosetting plastics and other plastics having little to no current widespread utility. The material produces ro...

A suspension bridge housing high rise buildings located at opposite ends of the bridge and integrally sandwiched within the supporting pylons of the bridge. The suspension bridge supports an observation pod at its center and a continuous series of tetrahedron members forming a lattice structure within which is located a hexagonal tube. A pedestrian transportation system is included within the hexagonal tube.

A modular bridge section including one or more box girders, wherein at least one box girder 1, 1' is equipped with at least one lower chord structure 5, 5', which is mounted floatingly at or in the box girder 1, 1' in the loaded state only between the end stops 6, 6', 6", 6'", which are arranged in the vicinity of the coupling elements 7, 7, 7", 7'".

The invention relates to supports for a device for transferring weight loads from one concrete structure to another. The device is particularly suited for concrete highway construction. The supports are used to position joint dowels that extend across paving joints between adjoining concrete slabs. The supports comprise a first and second support each positioned on opposing sides of the paving joint. The first support comprises a pair of legs that holds one end of the dowel therebetween and the ...

A folding ramp which contains at least two ramp members which are pivoted together. The underside of the ramp has a plurality of bars or rods which form part of the pivot mechanism and which, in addition, add strength and structural rigidity to the ramp.

A ramp structure which may be constructed quickly to provide temporary or permanent access to all individuals between two areas of different elevation. A truss design allows long spans to form a bridge without the need for intermediate supports and related support foundations. A truss cross-connector is firmly wedged in place between two trusses and allows the quick, solid joining of two trusses without fasteners to form a strong and stable assembly to serve as ramps, bridges, elevated walkways,...