Building Construction
The function of king post in a king post roof truss is

To receive the ends of principal rafter
To prevent the tie beam from sagging at its centre
To prevent the walls from spreading outward
To support the frame work of the roof

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Building Construction
Rotary drilling

Is not economical for holes of less than 10 cm
Hinders the ground water observations and permeability test
All listed here
Is not suitable for deposits containing very coarse gravel

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Building Construction
In clay soil

All listed here
Consolidation continues even after several years of construction
Swelling and shrinkage characteristics prevail
Differential settlement is generally prevalent

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