Application of Rippability Characteristics of Sub Surface in Selection of Bridge Site

Engineering geophysical methods are widely accepted for deciphering subsurface stratigraphy for inferring the quality of rock. This information is required for designing the foundations for the civil structures. A number of non-invasive techniques are available for subsurface studies but the selection of an appropriate method depends on the objectives, site conditions and required resolution. These geophysical techniques are ideal techniques for site investigation to detect geological, engineering features for civil engineering projects. Ground Penetrating Radar (GPR), Seismic Refraction Survey and Electrical Resistively Survey are the main geophysical non invasive techniques used for the site characterization. The Seismic Refraction Survey is the one of most reliable tool for subsurface characterisation. The survey results are presented as P-wave velocity profiles. The seismic survey results enable to have an insight on the P-wave velocity and vis a vis in terms of the stratigraphy. This method plays an important role in geotechnical investigations as it is fast, economical, and reliable and can cover a large area to delineate the subsurface. Seismic Refraction Survey was used on many projects for the subsurface delineation.