Is Beam Deflection Indicated as North or South Using the Macaulay Method?

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Discussion Overview

The discussion revolves around the interpretation of beam deflection results obtained using the Macaulay method, specifically whether a calculated deflection value indicates a direction of north or south. The scope includes technical reasoning related to beam mechanics and deflection analysis.

Discussion Character

  • Technical explanation, Debate/contested

Main Points Raised

  • One participant questions whether a deflection of 1.9mm indicates a north or south direction.
  • Another participant suggests that the direction of deflection can be inferred from the placement of the load on the beam.
  • A different participant expresses confusion due to the presence of multiple loads affecting the beam.
  • Another participant notes that, according to the Macaulay method, positive deflection values typically correspond to upward deflection.

Areas of Agreement / Disagreement

Participants express differing views on how to interpret deflection direction, with no consensus reached on the implications of multiple loads or the specific directional indicators of deflection values.

Contextual Notes

The discussion does not clarify the assumptions regarding the coordinate system used for defining north and south in relation to beam deflection.

febbie22
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Hi, quick question

Ive been using the beam deflection formula EIV=...

and I am getting answers of 1.9mm for example

does this mean that the deflection is in the south direction or north?

Cheers
 
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Surely you can figure this out based on where the load is placed?
 
yeah i know but I am just getting confused cause there's more than one load
 
febbie22: Using the Macaulay method, positive answers usually mean upward deflection.
 

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