The major “mega Earthquake” in the history occur near to the plate boundaries. So Nepal is considered as “Highway Seismically Vulnerable Area”. Kathmandu, the capital city of Nepal, is again more vulnerable to earthquake, due to the nature of the soil deposited in the valley. From the geological investigation the “sediments” deposited in the valley varies from few meters to 600 m. As the thickness of “sediments” increases, the action of “Local soil amplification Effect” will increase which may finally lead to “liquation” phenomena destroying and collapsing buildings and structures.