ASTM D7383-19 PDF Download

The ASTM D7383-19 standard provides procedures for testing individual vertical or inclined deep foundation elements to determine their displacement response to an axial compressive force pulse applied at the top. The test methods involve measuring the force and displacement at the pile top, and optionally at other points along the pile using accelerometers or strain transducers.

The standard highlights that the compressive axial static resistance derived from the test data is an indirect result, and recommends using Test Method D1143/D1143M for a more direct and reliable measurement of static resistance. It emphasizes the need for the engineer to ensure that the test generates the required peak force, especially when the purpose of the test is to establish geotechnical failure. The engineer may also analyze the data to evaluate the performance of the force pulse apparatus and the characteristics of the pile's response to the loading.

The standard does not include analysis for foundation capacity, but it emphasizes the importance of documenting factors that affect the derived axial static capacity, such as pile installation equipment and procedures, pile material properties, soil or rock properties, and final foundation settlement. The standard also mentions that additional strain transducers embedded in the pile can improve the accuracy of the results and allow for estimation of the contribution of side shear and end bearing to the axial static compressive resistance of the pile.