The program of safety performance of synthetic resin pipe which is used to the pipe Line for cable protection as an underground Communication is recognized importance gradually. For investigating of these, The Mechanical experiments by each type was carried out From the results, This study compared experimental data with theorical data against soil pressure and traffic pressure which went through laying pipe, and presumed the reasonable laying conditions after calculating total pressure by each laying depth, also grasped material Property of laying pipe and knew impact effect, relation of thickness against strain.