Excavations: Sloping and Shoring Requirements - Part 2 (5 of 6)
178.6 هزار بار بازدید -
15 سال پیش
-
This six-part video demonstrates the
This six-part video demonstrates the common hazards associated with excavations, plus the procedures for preparing and working in a trench. (1991)
15 سال پیش
در تاریخ 1388/10/15 منتشر شده
است.
178,697
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