A 3 m x 3 m square precast reinforced concretesegments to be installed by pushing them throughan existing railway embankment for making anunderpass as shown in the figure. A reactionarrangement using precast PCC blocks placedon the ground is to be made for the jacks.PrecastRCCsegmentRailwayembankment7.5JacksNatural GroundNot to ScaleAt each stage, the jacks are required to apply aforce of 1875 kN to push the segment. The jackswill react against the rigid steel plate placedagainst the reaction arrangement. The footprintarea of reaction arrangement on natural ground is37.5 m2. The unit weight of PCC block is 24 kN/m3. The proporties of the natural ground are: c =17 kPa; o = 25° and y =18 kN/m³. Assuming%3|that the reaction arrangement has rough interfaceand has the same properties that of soil, thefactor of safety (round off to 1 decimal place)against shear failure isSteel plate

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A 3 m x 3 m square precast reinforced concrete segments to be installed by pushing them through an existing railway embankment for making an underpass as shown in the figure. A reaction arrangement using precast PCC blocks placed on the ground is to be made for the jacks. Precast RCC segment Railway embankment 7.5 Jacks Natural Ground Not to Scale Steel plate

A 3 m x 3 m square precast reinforced concrete segments to be installed by pushing them through an existing railway embankment for making an underpass as shown in the figure. A reaction arrangement using precast PCC blocks placed on the ground is to be made for the jacks. Precast RCC segment Railway embankment 7.5 Jacks Natural Ground Not to Scale Steel plate

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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