Learn about Simply Supported Beam : Overhang to One Side : Point Load

SFD and BMD
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Simply Supported Beam : Overhang to One Side : Point Load : (Fig. 3.20)

Simply supported – a beam supported on the ends which are free to rotate and have no moment resistance

Over hanging – a simple beam extending beyond its support on one end.

Point loads are concentrated loads applied along the span of a member or the edge of a wall panel. Defining point loads may be accomplished graphically or in the spreadsheets.

In this example, one get clear idea how to calculate reactions when a simply supported beam is having point load overhang on one side of the support.

Learn about Simply Supported Beam : Overhang to One Side : Point Load
Learn about Simply Supported Beam : Overhang to One Side : Point Load

Reactions : Taking moments about B, we get

(i.e. acting downwards)

S.F.D. : Between C and A, S.F. =-W=constant

Between A and B, S.F. =

The S.F.D. is shown in Fig. 3.20 (b).

B.M.D. : Between C and A,

Mx=Wx, which gives MC=0 ; MA=Wa.

Between A and B,

which gives   MA=Wa and MB=0.
The B.M.D. diagram is shown in Fig. 3.20 (c).

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