سیستم های نگهداری و پایدارسازی زمین توسط حفاری ها شمع کوبی ها و بهره گیری از مهندسین و تحقیق، تجزیه و تحلیل، پیش بینی و اندازه گیری صورت می گیرد

The body of work called variously Earth Retention, or Shoring, or Geo Support,or Sheeting has historical roots. Earth Retention, as we know it today, has beenthe amalgamation of construction technologies, equipment innovations and engineeringanalyses borrowed from many other disciplines. The real coalescing ofthese roots into a distinct discipline did not occur until well into the latter part ofthe 20th century, but now represents literally billions of dollars of work annuallyin the United States alone.Earth Retention systems are created by a contractor drilling, driving and excavating,and an engineer investigating, analyzing, predicting, measuring and confirming.The innovations of the past have come together in the 20th century to forma critical mass which has evolved into the shoring industry as we know it today.