D1586 – Standard Test Method Technical Guide

📐 Equipment, Scope, and Applicability

ASTM D1586/D1586M defines the widely recognized Standard Penetration Test (SPT), an in-situ test that combines soil sampling with penetration resistance measurement. The method specifies a 140 lb [63.5 kg] hammer dropping 30 in. [750 mm] to drive a standard 2 in. [50 mm] diameter split-barrel sampler. The test is designed for use in non-lithified soils whose maximum particle size is approximately less than one-half of the sampler diameter