CALCULATION OF EARTH QUAKE LOADS

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CALCULATION OF  EARTH QUAKE LOADS

1.SEISMIC  COEFFICIENT  METHOD:
Thickness of slab=110mm
Assume size of beam=230×500mm
Assume column size=300×300
Wall  Thickness=230mm
Storey height=4KN/m

2.WEIGHT OF ONE STOREY:
Weight  of  beam =0.23×0.5×13.150×14.420
                                    =21.806KN
Weight  of  Column=(3.2×0.3×0.3×13.150×4)
                                     =15.14KN
Weight of brickwork=(14.420×3.2)-((1.5×3.2)-(1.5×2.1)-(1×1) ×19
                                    =821.146KN
Weight of Slab            =(14.420×6.230) ×0.11×25
                                =   247.05KN
Live Load                   =(14.420×4) ×2
                                    =115.36 KN
Weight of one storey=1220KN
Total Weight Of Building=2440KN
The Proposed Building is situated at Coimbatore
Seismic Zone –lll
Zone Factor Z  =0.16
Sa/g For Soil From Table 3 of BIS -2002-2.5
Damping Of RCC Building =3%
Importance Factor=1

3.TIME  PERIOD  CALCULATION:
Time period=0.09h/√d
Time period=0.09× 6.4/√14.420
                    =0.1516

4.DESIGN OF HORIZONTAL SEISMIC EFFICIENT:
Ah=(Z/2) (Sa/g)/(R/T)
Ah=(0.16/2) (2.5) (3.1)=0.0666

5.DESIGN OF BASE SHEAR
Vb= Ah Xw
Vb=0.666×2440= 1625K       N
Distribution of Basic shear along the height of the building
Qi =Vb (wihi2/€ wihi2)
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