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Structural Analysis III As may be seen, the effect of VA is to cause an anti-clockwise rotation of the segment which must therefore be resisted by a clockwise internal bending moment MX, as shown. This means (since the arrow comes from the tension face) that tension is on the top of the beam, and is increasing as the distance increases (the force remaining constant). Similarly, we examine the portion BC: 18 Dr. C. Caprani
