Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Q. Explain types of bearings?
The bearing transfers the forces coming from the superstructure to the substructure. It also allows for necessary movements in the superstructure which are caused by temperature variations. The following types of bearings are generally used.
a) Sliding bearing - permitting rotation and translation
b) Rocker and roller bearings - permitting rotation and translation respectively.
c) Elastomeric bearings - Made of natural or synthetic rubber of shore hardness of approximately 50 to 70. They are very stiff in resisting volume change but are very flexible when subjected to shear. They are generally reinforced with steel plates in alternate layers to reduce bulging. When used with a steel or concrete girder these permit moderate longitudinal movements and small rotations at the ends. These are provided for bridges having RCC or Pre stressed girders and can take deflection a well as movement
d) P.T.F.E. Bearings - The PTFE can be unfilled or filled with glass fibre or other reinforcing material. These are used either to provide rotation by sliding over cylindrical or spherical surfaces or to provide horizontal sliding movement over flat surface or a combination of both. Where there are large displacements accompanied with relatively small loadings, as in case of centrifugal loads, wind loads or seismic loads, PTFE sliding bearings are utilised.
Non-distortional Prestressing Concrete members deflect due to their own self weight. If prestressing force is applied in such a way that these deflections are eliminated due to
Q. Show the Excessive movement joints in bridges? Movement joints are generally added to bridge structures to accommodate movements because of dimensional changes arising from
Q. Formation of pedestrian level winds around buildings? When a building blocks the wind blowing across it, part of the wind will escape over the top of the building. Some will
Explain the Anti Slip Devices - Bridge Bearing? It has been explained earlier that elastomeric bearings have a tendency to slip if the minimum normal pressure is less than 2 MP
Define Divers in a team for Underwater inspection of Bridge? One team of divers should have minimum three members. This is a requirement of safe working. The idea is while a mi
Q. Preloading - Control of settlements? This method consists of loading the soil strata by a load intensity which will be equal to or higher than the expected load intensity. T
Question Have air test or water tests be selected to test leakage of constructed gravity pipelines ? Answer For gravity pipes, air tests are carried out after completi
Gts bench mark in thane district maharashtra
Define Recommendations for Design of PTFE Sliding Bearing? Other Recommendations for Design of PTFE Sliding Bearing 1. Expansion bearings having sliding surfaces of PTFE sha
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd