Structural Analysis
The degree of static indeterminacy of a pin-jointed space frame is given by (where m is number of unknown member forces, r is unknown reaction components and j is number of joints)

3m + r – 3j
m + r – 2j
m + r + 3j
m + r – 3j

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Structural Analysis
Pick up the incorrect statement from the following:

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 channels is the depth of the web multiplied by its thickness
The gross section of the web of plate girders is the depth of the web plate multiplied by its thickness
None of these

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