shear wall ppt

SHEAR WALLS

IS 456-2000
IS 13920-1993
IS 1893-2002

Earth quake magnitude

Magnitude 9
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Considerations of earthquake forces
1.HORIZONTAL

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Considerations of earthquake forces

2.GRAVITY LOADS

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Considerations of earthquake forces
3. OSCILLATIONS

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Difference between earthquake
and gravity forces
Horizontal motion is
considered to be of
importance in
structural design

Vertical seismic force
are only fraction of
gravity loads and
these are taken care
of factors of safety
provided by D.L and
L.L
IS 456-2000
IS 13920-1993
IS 1893-2002

Design of base shear

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DESIGN OF BASE SHEAR

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DESIGN OF BASE SHEAR
VB = Ah x W
Ah =Z*I*Sa /2*R*g
I = importance factor (Table no-6, 6.4.2)
Z = Zone factor (II) (Table-2, Clause 6.4.2)
R = Response Reduction factor (Table -7, clause 6.4.2)

IS 456-2000
IS 13920-1993
IS 1893-2002

DESIGN CONSIDERATIONS
1.Serviceability limit state
2.Damage controlled limit state
3.Survival(Collapse threshold level)
limit state

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THANK YOU

IS 456-2000
IS 13920-1993
IS 1893-2002