In the method of tube boring of soil investigation, the following is essential: Options: A . &nbspA tube of about 2 meters length and 20 cm diameter with a cutting edge B . &nbspA flap valve at the bottom of tube is provided to extract the soil sample C . &nbspThe tube is raised and lowered by 4 thick rope moving over a pulley suspended on a tripod stand D . &nbspAll the above

In the method of tube boring of soil investigation, the following is essential:

Question

In the method of tube boring of soil investigation, the following is essential:

Options:

A . A tube of about 2 meters length and 20 cm diameter with a cutting edge

B . A flap valve at the bottom of tube is provided to extract the soil sample

C . The tube is raised and lowered by 4 thick rope moving over a pulley suspended on a tripod stand

D . All the above

Answer: Option D

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