This standard ( Part 1 ) covers the method of determination of the state of in-situ stress underground through a drill hole using hydraulic fracturing technique.
The test provides, in general, the magnitudes and direction of the maximum and minimum stresses in the plane perpendicular to the drill hole.
IS 13946 Pt.1-1994 history
1994IS 13946 Pt.1-1994 Determination of rock stress—Code of practice using hydraulic fracturing techniques Part 1