Experimental evidence shows that the mechanical behavior of sands in triaxial conditions depends on the preparation of samples and the applied stress paths. The fabric of sands, as a function of formation conditions, is responsible for the establishment of load chains as a micromechanical response of grain assembles. Fabric tensors can affect the constitutive equations of sands by portraying different granular material responses when subjected to different stress paths. The spatial distribution of elongated particles, as related to fabric, affects fundamental aspects e.g., dilatancy, peak stress, picnotropy, and barotropy.