Building Construction
The type of arch used for high class buildings where appearance is of prime importance, is known as

Rubble arch
Ashlar arch
Axed brick arch
Gauged brick arch

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

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

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