What Could Be Wrong with My Shear Force Diagram?

AI Thread Summary
The shear force diagram initially presented shows points at 0, -4, 1.25, 1.25, and back to 0, but was flagged as incorrect. A participant in the discussion believes the diagram appears correct, suggesting the issue may lie in the input method. The original poster plans to re-enter the data, discovering that an additional line of discontinuity at 12 meters is required. This adjustment seems unnecessary to them, indicating confusion about its necessity. The discussion highlights the importance of accurately representing discontinuities in shear force diagrams.
jaxta
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I have drawn the following shear force diagram however it says it is wrong. Could somebody please explain to me what is wrong with it. The points in the diagram are 0 then -4 then 1.25 then 1.25, then back to 0.
 

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jaxta said:
I have drawn the following shear force diagram however it says it is wrong. Could somebody please explain to me what is wrong with it. The points in the diagram are 0 then -4 then 1.25 then 1.25, then back to 0.
Looks good to me, I don't see anything wrong with it.
 
thanks, that is what i thought. It must be the way i have entered it in or something, i am going to try it again
 
it turns out there had to be another line of discontinuity (blue line) at 12 metres which seems rather pointless
 

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