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Q. Underwater problems in bridge construction?
The major bridge construction materials are steel and concrete. In the past, stone and brick masonry, with lime mortar as binding agent, have been used extensively for building bridges. Cast iron piles have been used as substructure in many bridges. These materials are prone to different types of failure and, therefore, require different inspection strategies. The major problem in steel bridges is corrosion. Concrete bridges are susceptible to spalling and scour. Bridges built in masonry have the problem of deterioration of brick / stone elements accompanied with loss of mortar. Aquatic environment has significant effects on bridges in addition to those mentioned above. Heavy current is especially destructive. Floods cause damage from rapidly moving water as well as from the impact of large moving debris. The bridge substructure can also get damaged due to accidental man inflicted causes and earthquakes.
Q.for ISMB200 having 6.70 m span simply supported so find out load carrying capacity.
According to National Building Code (Sp:7 1970), the differential settlement shall be kept within the limits to which the superstructure can accommodate itself without harmful dist
State Highways: These are trunk or arterial roads of a state connecting the National Highways of adjacent states and linking the district headquarters and important cities wit
Q. Coating on concrete – complete im-permeability to moisture? In designing protective coating on concrete structures, stoppage of water ingress by the coating is generally req
Soil Classification: Based on particle size, the soils can be classified as under, adopting the IS soil classification system: 0.002 0.075 0.425 2.36 4.75
Limit State of Serviceability Deflection In the consideration of this limit state, the deflection of a structural member is considered. The code recommends that the deflection
Determine the final stresses in the bolt: A steel bolt of diameter 12 mm and length 175 mm is used to clamp a brass sleeve of length 150 mm to a rigid base plate as in Figure.
how do one uses the Macauleys model to find deflections of bars
curing of brick masonry
Obstacles which can be ranged
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