Seismic Base Shear Calculation Report
Equivalent Static Analysis • Reference Code Parameters: IS 1893 / NBC 105
Print Report
1. DESIGN INPUT CONFIGURATIONS
Seismic Zone Factor (Z)
Zone V / Very High Seismicity (Z = 0.36)
Zone IV / High Seismicity (Z = 0.24)
Zone III / Moderate Seismicity (Z = 0.16)
Zone II / Low Seismicity (Z = 0.10)
Importance Factor (I)
Critical Infrastructure / Public (I = 1.5)
Commercial / Residential Multi-Storey (I = 1.2)
Standard Routine Buildings (I = 1.0)
Response Reduction Factor (R)
SMRF - Special Moment Frame (R = 5.0)
OMRF - Ordinary Moment Frame (R = 3.0)
Foundation Soil Classification
Type I - Rock or Hard Soil Profile
Type II - Medium / Stiff Soil Profile
Type III - Soft Foundation Layers
Total Height (h)
M
Seismic Weight (W)
KN
2. Evaluation Parameters
Time Period (T
a
)
--
0.075×h
0.75
Spectral (S
a
/g)
--
Soil Curve Factor
Coeff. (A
h
)
--
(Z/2)·(I/R)·(S
a
/g)
Height vs. Base Shear Base Curve
Design Ultimate Base Shear Force (V
b
)
--
Formula: V
b
= A
h
× W
•