Working out wind shear in dams & retaining walls

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Discussion Overview

The discussion revolves around calculating wind shear in the context of dams and retaining walls, focusing on the associated stresses such as bending and axial stresses. Participants are seeking assistance with specific calculations and methodologies related to these engineering concepts.

Discussion Character

  • Homework-related
  • Technical explanation

Main Points Raised

  • One participant, Andy, requests help with understanding wind shear in dams and retaining walls, indicating a need for clarification on the calculations involved.
  • Another participant emphasizes the importance of showing work before assistance can be provided, suggesting familiarity with bending and axial stresses is necessary.
  • Andy confirms familiarity with bending and axial stresses and presents initial calculations for various loads, but expresses uncertainty about the working out process.
  • A subsequent reply reiterates the need to calculate both axial and flexural stresses and encourages Andy to start with the axial stress at the base, questioning the causes of these stresses and how to calculate them.

Areas of Agreement / Disagreement

Participants generally agree on the necessity of calculating both axial and bending stresses for the problems at hand, but there is no consensus on the specific calculations or methodologies to be used, as Andy's initial calculations and approach are not fully validated.

Contextual Notes

There are limitations in the discussion regarding the assumptions made about the loads and the specific methods for calculating the stresses, which have not been fully explored or resolved.

boxcar
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Hey, got a bit of a problem; got a few questions on wind Shear in Dams & retaining walls. Can anyody help

http://img296.imageshack.us/img296/9366/image0003xb2.jpg

Thanks
Andy.
 
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Yes, but you have to first show some work before we can assist. I assume you are familiar with bending and axial stresses?
 
wind shear

Why yes I am familiar with bending and axial stresses.

By looking at the efect of the axial load and the load caused by bending separately and then giving the combined result we can get this.

I believe the first answer to be 0.34 kn/m, the second to be 48kn, the third to be 67.4, 35.6kn/m and the forth to be 31.4kn - 36.2n/mm

Im not sure how to do the working out.

Any help would be great.
Cheers Pal.
 
Yes, these problems are similar in that you must calculate both axial and flexural stresses and add them together to get the results, but you must show an attempt at your work. In problem 1, start by calculating the axial stress at the base. What causes the axial stress? What causes the bending stresses? How do you calculate those stresses?
 

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