This standard covers the procedure for determining the resistance of different soil strata to dynamic penetration of a 50-mm cone and thereby obtaining an indication regarding their relative strengths or density or both. The method helps reconaissance survey of wide areas in a shorter time which will enable selective in situ testing or sampling for typical profile. It can provide useful data for local conditions where reliable correlations have been established.
IS 4968 Pt.1-1976 history
1977IS 4968 Pt.1-1976 Soil Subsurface Detection Methods Part I Dynamic Method Using 50 mm Cone No Bentonite Slurry