Civil Engineering Organisation
The Bridge decks are one of the basic components of the bridge that forms its surface. The bridge deck may either be cast-in-situ, precast, steel, wood, concrete, or other pavement systems which are supported on concrete or steel girders or beams (composite bridges). The bridge decks are most often defines the characteristics of the bridge. … Read more
Scouring in bridge Scouring is defined as the lowering or loss of top bed soil (erosion) around the bridge piers, abutments, spurs etc. due to the water flow currents. Scouring is always a potential threat to bridge stability eventually it can lead to foundation failure. As per the research data 60% of bridge failure in … Read more
Deflection Walls or Crash walls Deflection Walls or Crash walls are huge wall shaped reinforced concrete structures provided for the protection of piers and abutments in the vicinity of railway tracks. The purpose of deflection wall is to prevent head-on collision or impact from derailed trains on the primary structural support elements. It is also … Read more
Calculating Design Loads and loading bridge model is one the most sophisticated part in the design of any Bridge. Find below all important loads to be considered in the design of a Bridge. Dead Load “Gravity loading due to structural parts of bridge” Dead consist of permanent gravity forces due to structural Elements. It is … Read more
Impact Factor Vehicular Live loads are multiplied with an Impact Factor to accommodate this dynamic effect in the design of bridges. The dynamic loads for moving vehicles are considered Impact in bridge engineering because of the relatively short duration. The magnitude of the impact factor depends on the bridge span, stiffness and surface roughness, and … Read more
HL-93 is a type of theoretical vehicular loading proposed by AASHTO in 1993. It is used as the design loading for highway structures in USA and other countries where AASHTO code is followed. AASHTO HL-93 vehicular live load is a combination of three different loads, HL-93 Design Truck (formerly, HS20-44 Truck) HL-93 Design Tandem (formerly, … Read more