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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.
In a drained triaxial compression test, a saturated specimen of cohesionless sand fails at a deviator stress of 450 kN/m 2 when the cell pressure was 135 kN/m 2 . Search the ef
difference between piles and pier
What is the station at Point B? SOLUTION 3 Station at Point A = Sta 22+45 Station at Point B = (Sta 22+45) + 1028' = 2245'+1028' =3273' = Sta 32+73
Define Recommendations for confined elastomeric pad? (a) Permissible limits for confined pressure on elastomer pad depends upon effectiveness of internal seal preventing it fr
A rectangular area 4 m × 6 m carries a uniformly distributed load of 100 kN/m 2 at the ground surface. Estimate the vertical pressure at a depth of 6 m vertically below the centre
RMC
Q. Grouting in segmental linings in tunnels? Grouting is typically carried out under pressure in segmental linings at the time of tunnel construction due to the below reasons:
If i want to find D, and D=2a, then a=1-5 how can i show the ans is:2&4&6&8&10
Question What is main function of followers in driven H-piles ? Answer A follower is an extension between pile head and hammers which transfers blow to pile in which
Explain the Suppressed Rectangular Weir If the length of the weir (b) equals the width of the channel, i.e., the flow is not "contracted".
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