The sand cone apparatus determines the in-place density of soils having a maximum particle size of up to 2" (51mm) using test hole volumes of approximately 0.1ft3 (2.8L). The set is comprised of a 1-gal. (3.79L) threaded plastic jar; a ASTM D1556; AASHTO T191, COE detachable double cone, which is threaded on one end for attaching the threaded plastic jar; and, has a 6.5" (165mm) dia. flanged opening on the other, which fits the opening of the GAM-0801 sand cone plate. (order separately). The cone has a brass cylindrical valve with a 0.5" (12.7mm) dia. orifice and stops that prevent the valve from rotating past the completely open or completely closed positions. ASTM D1556, AASHTO T191