... shear force steps up 25KN * Between A and B the shear force diagram slopes down at the rate of 10KN/m. thus the shear force falls 10KN/m x 5m = 50 KN. Hence shear at B = 25-50= -25KN * The vertical upwards reaction of V2 cause the shear force diagram to step up 25KN at B. This change returns the shear to zero at B. The Bending Moment diagram for Beams 1(A) and 1(B). Bending Moment Diagram (KNm) Bending Moment Max = 31.25 KNm Beams 2(A) and 2(B) Taking moments about A to calculate V2. ?M = 0 or ?clockwise moments = ?anti-clockwise moments. 25 x 5 x 2.5 - 5V2 = 0 25 x 5 x 2.5 = 5V2 5V2 = 312.5 Hence V2 = 312.5/5 = 62.5KN Resolving Vertically to find the vertical reaction V1 ?V = 0 or ?forces upwards = ?forces downwards V1 + V2 = 25 x 5 V1 + 62.5 = 125 Hence V1 = 62.5 KN The Shear Force diagram for ...

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