Resources Contact Us Home
Prefabricated unit construction modular bridging system

Image Number 5 for United States Patent #4912795.

A prefabricated modular unit construction bridging system in which all components are identical and interchangeable to meet any variation of span, width of roadway, number of lanes of traffic, and live load specification for any temporary, semi-permanent, or permanent bridge. The bridge is capable of being dismantled and the individual modular components used elsewhere to form a new bridge. The panels, when connected end-to-end to form the main load-bearing trusses of the bridge side girders, are of such a shape that they can be pinned together at their bottom chord level to support the standard cross-beams and modular deck units/bracing throughout the bridge and provide gaps between adjacent panels at their top chord level into which can be pinned other standard chord units of such a length calculated to eliminate entirely both the natural pin-hole deflection inherent in 2-pinned modular truss structures and the elastic deflection under dead load. Some or all of the elastic deflection due to live load may also be eliminated. Also, the same shaped basic panels can be up-turned to form a second story of panels in double story truss constructions. The bottom chords of the up-turned panels form the top chord of each truss of the side girders, and the bottom chord of the lower panels form the bottom chord of each truss of the side girders.

  Recently Added Patents
Traffic flow analysis mitigation using a cover signal
Disk-based storage device having read channel memory that is selectively accessible to disk controller
Transaction finance processing system and approach
Method, apparatus and computer program product for providing metadata entry
Method and apparatus for monitoring and/or controlling the curing of cements used in medical procedures
Energy storage device package
Shared system to operationally connect logic nodes
  Randomly Featured Patents
AC motor control
Arrangement and method for determining the temperature of valves
Calculator having a user-accessible object stack for the uniform application of mathematical functions and logical operations to a multiplicity of object types
S-alkyl thiocarbamate base lens resin
Condensed oximeter system and method with noise reduction software
Soil sampling apparatus and method
Laminated damping device for a carrier and a method for making the same
Dynamic management of execute in place applications
Data editing program, data editing method, data editing apparatus and storage medium
Water-decomposable cleaning article and manufacturing method therefor