Please i with Beam Deflection problem

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Discussion Overview

The discussion revolves around a beam deflection problem involving a simply supported beam with specific parameters. Participants seek to calculate the safe uniformly distributed load (UDL) for a given beam size while adhering to constraints on bending stress and deflection limits.

Discussion Character

  • Homework-related
  • Technical explanation
  • Conceptual clarification

Main Points Raised

  • One participant requests assistance with calculating the safe inclusive UDL for a 356x171 UB67 beam over a 9m span, citing permissible bending stress and deflection limits.
  • Another participant asks for clarification on terminology, including "Q-", "UDL", and the units for the beam dimensions, indicating a need for foundational understanding.
  • A participant suggests that using tables for maximum deflection and moment is acceptable and emphasizes the importance of showing an attempt to determine UDL based on allowable stress or deflection.
  • Further clarification is provided on the meanings of "Q-", "UDL", and "UB67", with an emphasis on the standard beam size and weight considerations.

Areas of Agreement / Disagreement

There is no consensus on the approach to solving the problem, as participants express varying levels of understanding and provide different types of assistance. Some participants focus on terminology and foundational concepts, while others emphasize the calculation methods.

Contextual Notes

Participants have not resolved the specific calculations needed for the problem, and there are assumptions regarding the use of tables and the consideration of the beam's weight that remain unaddressed.

Who May Find This Useful

This discussion may be useful for students or individuals seeking help with beam deflection problems, particularly those unfamiliar with the terminology and calculation methods involved in structural engineering.

Ms.Alsofi
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Can anyone help me to find the answer,,, its a very difficult question!

Q- calculate the safe inclusive UDL for a 356x171 UB67 simply supported at the ends of span of 9m.
The permissible bending stress is 167N/mm*2 and the defluction must not exceed (1/360) x span, and I = 187.2x10*6mm*4

....

please i need any1 to explain to me..
 
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What does Q- mean?
What does UDL mean?
What are the units for 356x171?
What does UB67 mean?

Defluction? You mean Deflection?"please i need any1 to explain to me.." A bit more legwork on your part would go a long way toward getting others to help you.
 


Ms.Alsofi said:
Can anyone help me to find the answer,,, its a very difficult question!

Q- calculate the safe inclusive UDL for a 356x171 UB67 simply supported at the ends of span of 9m.
The permissible bending stress is 167N/mm*2 and the defluction must not exceed (1/360) x span, and I = 187.2x10*6mm*4

....

please i need any1 to explain to me..
It's not difficult if you are allowed to use tables for the max deflection and max moment in a simple beam under a uniformly distributed load. Then you need to show some attempt to determine the UDL based on the controlling allowable stress or deflection.
 


huntoon said:
What does Q- mean?
What does UDL mean?
What are the units for 356x171?
What does UB67 mean?

Q- is that it is the question.
UDL is Uniformly Distributed Load
356x171 are in mm (this is a standard beam size)
UB67 is a British Universal Beam. (which if I am not mistaken describes that it is roughly 67 kg/m)

You certainly have enough info here Ms. Alsofi. Where do you think you should start? (Also, will you need to take into accound the weight of the beam itself? If so, be sure to do that)
 

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