Building Construction
To ensure that supporting area of an offset footing of a boundary wall is fully compressive, the C.G. of load must act

At the centre of the base
Neither (A), (B) nor (C)
Within the middle fifth of the base
Within the middle third of the base

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

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

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