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

The tube is raised and lowered by 4 thick rope moving over a pulley suspended on a tripod stand
All listed here
A flap valve at the bottom of tube is provided to extract the soil sample
A tube of about 2 meters length and 20 cm diameter with a cutting edge

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Building Construction
In English garden wall bond

All of these
One course of headers to three or five course of stretchers
Queen closer in provided in each heading course
The middle course of stretchers is started with a header to give proper vertical joints

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