Answer / m.k.gupta

As the concrete is weak in shear and at ends/supports the
shear force is maximum so their is a chance of sliding/
shearfailure of structural parts as beams at ends. so steel
is provided to bear this shear force and prevent shear
failure.( i.e. at ends cocrete is prevented to slide in the
vertical direction )

Answer / rohit agarwal

Shear reinforcement, as name implies, is to provide the
resistance against shear forces to which a beam is
subjected to and is usully in the form of stirrups which
also serve the purpose of holding the main tensile and
compression reinf in place. Now the basic doubt here is,
although, if the stirrups are provided to resis the shear
force, why are these provided parallel to shear force and
this way how will they resist shear force. Thats for two
main reasons -
1. shear force does'nt directly acts at stirrups but gets
transmitted through tensile and compression reinf, thus
shear stirrups actually bear the shear force as like a
tensile bar.
2. the profile of crack developed due to shear force shall
not be absolutely vertical (in case of beam) as there are
other forces acting also and because of this the crack
shall be always be inclined and if stirrups are there, the
crack profile shall pass through the stirrups and shall be
resisted.

Answer / nisha a.s

Shear reinforcement is usually provided in the form of
stirrups to hold the longitudinal reinforcement and also to
take the shear to which the structure is subjected to.Even
if shear reinforcement is not required, a minimum has to be
provided as per IS : 456.

Answer / pradeep kumar bhuyan

When the concrete section is not adequate to resist the
shear force alone, shear reinforcement is provided for the
additional force to be resisted. Also, the shear
reinforcement keeps the longitudinal reinforcement in
proper places.

Answer / amar

to avoid the shear failure at the edge of the joint or at
any point load. Shear form due to load which will cause the
failure of structure in a vertical plane thats why
stirrups ,bent up bar,

Answer / kosh nath adhikari

To resist the shear force induced on either sides of
assumed section. To confine the longitudinal reinforcment
and not allow outbrusting during lateral loading during
earthquake and to make more ductile during lateral loadings

Answer / anteneh

shear renforcement is provided for 1 to holde longitudinal rnfmnt
2to risist diagonal crack

Answer / raju

The minimum shear reinforcement in beams is provided in the form of stirrups in order to resist effect of creep and shrinkage

Answer / v

the basic reason for providing shear reinforcement is,to
bear the tensile force.concrete is strong in compressive
strength,but weak in tensile strength,so shear
reinforcement is provided in longitudinal direction.....

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