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
Detection of neutrinos
System and method for supporting JIT in a secure system with randomly allocated memory ranges
Input device with haptic feedback
Sexual aid device
System and methods for evaluating feature opinions for products, services, and entities
Hair rollers
Operational electrode impedance measurement for an implantable medical stimulator
  Randomly Featured Patents
Semiconductor device and method for fabricating the same
Automotive combination switch
Apparatus for collecting blood samples
Thermokeratoplasty systems
Apparatus for deploying oxygen masks
Metal detector
Memory queue with adjustable priority and conflict detection
Method for cleaning a semiconductor structure and chemistry thereof
Preparation of (phosphonyl) aromatic diesters and acids
Method for charging quartz glass objects with hydrogen