Astm D 4394 – 84 (Reapproved 1998) Pdf free download May 8, 2022March 7, 2021 by Mike Standard Test Method for Determining the In Situ Modulus of Deformation of Rock Mass Using the Rigid Plate Loading Method1…Membership Required You must be a member to access this content.View Membership LevelsAlready a member? Log in here