Structural Analysis
For a two-hinged arch, if one of the supports settles down vertically, then the horizontal thrust

Is increased
Remains unchanged
Becomes zero
Is decreased

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Structural Analysis
Pick up the incorrect statement from the following:

The gross section of the web of channels is the depth of the web multiplied by its thickness
None of these
The gross section of the web of rolled I-beams is the depth of the beam multiplied by the web thickness
The gross section of the web of plate girders is the depth of the web plate multiplied by its thickness

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