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Seismic load calculation of the Tank as per IS 1893
Seismic Tank Weight W = kg = kN
Horizontal seismic coefficient A h = = 6.4.2
Z = (Zone factor)
I = 2 (Importance factor ‐DDP‐APG‐GEN‐PF‐MEC‐SPE‐1014_A)
R = 5 (Reduction factor ‐ IS1893 Table 7)
= (Average response acc. coefficient, Type III soil )
h = m (Height in meter)
Fundamental Period:
T = 0.085 h 0.75 = 0.1 Sec (For steel frame) 7.6.1
Design seismic base shear VB = AhW = kN 7.5.3
Seismic load along X ‐ direction
Seismic base shear at each bolts = Force/4 = kN
Seismic moment at anchor bolts = Siesmic shear x h/2 = kNm
Saddle holes distance, A = C to C = mm
Pull ‐ Push at each anchor bolts, P = (moment / A )*(1/2)*(1/2) = kN
Seismic load along Z ‐ direction
Seismic base shear at each bolts = Force/4 = kN
Seismic moment at anchor bolts = Siesmic shear x h/2 = kNm
Saddle holes distance, A = C to C = mm
Pull ‐ Push at each anchor bolts, P = (moment / A )*(1/2)*(1/2) = kN
Sa/ g 2.5
3.8
15.8
13450 131.9
0.12
0.24
1524
4.93
3.96
30.08
2200
3.42
3.96
30.08
2