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Hello everyone, in this video I will share with you some of my knowledge acquired in a sanitation project, we will focus on talking clearly about what drainage is and we will learn to do: BM running at an engineer level. Level control in trench excavation. Level control in placing a sand bed for a drain pipe. Level control in placing a drain pipe. Level control for excavating mailboxes. Level control for lowering the mailbox basin. TEMPLATE FOR LEVEL CONTROL IN EXCAVATION, LAYING SAND BED, LAYING PIPE IN TRENCHES AND LOWERING MANHOLE CUP: Template link here: http://hideadew.com/4jAd ===================================================== Template for trench excavation template for laying drain pipe template for sanitation work experience in sanitation work how levels are worked in sanitation work how to make the BM run execution of sanitation work