The purpose of this standard is to describe the procedure for carrying out the so-called Borro-type dynamic penetration test. This test determines the resistance of the ground to the penetration of a point when it is struck according to the established procedure. Its use makes it possible, among other things, to -Determine the dynamic penetration resistance of a soil. -To evaluate the compactness of a soil, preferably granular. -To investigate the homogeneity and certain irregularities of a soil layer.