What is preset in bridge bearing, Civil Engineering

Assignment Help:

Q. What is Preset in bridge bearing?

'Preset' is a method to decrease the size of upper plates of sliding bearings in order to save cost. Normal length of an upper bearing plate must be composed of the following components: length of bearing + 2 x irreversible movement + 2 x reversible movement. Initially bearing is placed at the mid-point of upper bearing plate without considering the directional effect of irreversible movement. Though as irreversible movement generally takes place at one direction only, bearing is presetted/displaced a distance of (irreversible movement/2) from the mid-point of bearing in which length of upper plate length is equal to length of bearing + irreversible movement + 2 x reversible movement. In this arrangement size of upper plate is minimized in that irreversible movement takes place in one direction only and there is no need to include the component of two irreversible movements in the upper plate. 

Note: 'Preset' refers to the displacement of a certain distance of sliding bearings with respect to upper bearing plates at the time of installation of bearings.

2488_What is preset in bridge bearing.png


Related Discussions:- What is preset in bridge bearing

Discuss about the fibre reinforced concrete, Discuss about the fibre reinfo...

Discuss about the fibre reinforced concrete Tensile strength of concrete may be improved by using a higher grade of concrete or by using special concretes such as fibre reinfor

Determine the viscosity of water, A soil sample consists of particles rangi...

A soil sample consists of particles ranging in size from 0.6 mm to 0.02 mm. The average exact gravity of the particles is 2.66. Verify the time of settlement of the coarsest and fi

Fluid mechanics, How a water bound macadam road is maintained

How a water bound macadam road is maintained

Explain hardness - water softening, Explain Hardness - Water Softening ...

Explain Hardness - Water Softening 1) Hardness is used to characterize a water that does not lather well, causes a scum in the bath tub and leaves hard, white, crusty deposits

Test for determination of shear modulus, Test for determination of Shear Mo...

Test for determination of Shear Modulus Conditioning load : Bearings shall be preloaded with maximum horizontal load Htest (with Ntest or vertical load held constant) and un

Preparation for underwater inspection - tool and equipment, Preparation for...

Preparation for Underwater Inspection - Availability of Tools and Equipment The engineer-in-charge, before taking up the inspection, should list out the complete equipment req

Define analytical methods approved under the clean water act, Define Analyt...

Define Analytical Methods Approved Under the Clean Water Act? Analytical Methods Approved Under the Clean Water Act CWA Section 304(h) needs EPA to publish test procedures (ana

Steel truss 15 m span, types of truss of 15 m cantilever with 1000 kg on fr...

types of truss of 15 m cantilever with 1000 kg on free end. May be steel or any lightest material aluminium anodized truss. thanks

#high way engineering about road pavements.., what is the function of longi...

what is the function of longitudinal joints in concrete road pavements?

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd