1) An isostatic structure: a) is statically determined for any load configuration; b) has constraint reactions in number more than the total degrees of freedom of the structure; c) can be hypostatic. 2) In the diagram of bending moment of a system of beams, in correspondence of a point force applied on a beam: a) the diagram is parabolic; b) the diagram has a change in slope; the diagram changes its sign. 3) A hinge is a double constraint which restraints: a) a translation and a rotation in the plane; b) a rotation in the plane; c) two translations in the plane.
1) An isostatic structure: a) is statically determined for any load configuration; b) has constraint reactions in number more than the total degrees of freedom of the structure; c) can be hypostatic. 2) In the diagram of bending moment of a system of beams, in correspondence of a point force applied on a beam: a) the diagram is parabolic; b) the diagram has a change in slope; the diagram changes its sign. 3) A hinge is a double constraint which restraints: a) a translation and a rotation in the plane; b) a rotation in the plane; c) two translations in the plane.
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Transcribed Image Text:1) An isostatic structure:
a) is statically determined for any load configuration;
b) has constraint reactions in number more than the total degrees of freedom of the structure;
c) can be hypostatic.
2) In the diagram of bending moment of a system of beams, in correspondence of a point force applied on a
beam:
a) the diagram is parabolic;
b) the diagram has a change in slope;
the diagram changes its sign.
3) A hinge is a double constraint which restraints:
a)
a translation and a rotation in the plane;
b) a rotation in the plane;
c)
two translations in the plane.
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