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b336a53425 It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. SUPERSEDED (click for Active standard). The values given in parentheses are for information only. 4 and the 3-in. Excavations. 2. Anytime. These test methods have been written using inch-pound units (gravimetric system) where the pound (lbf) represents a unit of force (weight). Create your own website with just a few clicks.