GIS based Vs30, Vsz & Dbed rock Mapping for the Shallow Sites of Islamabad, Pakistan

The location of Pakistan is in a collision zone among the Eurasian and Indian plate boundaries. geological framework Northwest Himalaya makes Northern susceptible to frequent moderate major earthquakes. devastating earthquake October 8, 2005 caused 87,000 deaths, 2.8 million displacements financial loss 200 Billion USD equivalent 6% GDP Pakistan. Islamabad seismically active region, studies conducted for this region addresses poor soil conditions, non-engineering construction practices high level seismic shaking. However, none these provided readily available ground maps (top 30m time average shear wave velocity V s30 , sz & depth bed rock D ) based on site specific geotechnical database. are important parameters evaluation dynamic characteristics shallow sites. In Pakistan, Uniform Building Code (UBC-1997) currently practiced, classification defined using . study, borehole database 57 sites was collected develop GIS Standard Penetration Test value (SPT-N). includes, SPT-N, description unit weight order (V s profiles, -SPT empirical correlations were evaluated where both SPT-N measured data available. selected applied representative Vs profiles. Using developed by applying Kriging interpolation open source QGIS software. proposed can be used preliminary design resilient Islamabad,