Maximum Allowable Stress

You either need to Google search this or visit Wikipedia.com....or pay attention during the professor's dissertation if you're an engineering student!

so wats this forum for!!!

is this a tooo easy topic for discussion?

No quiinces, you've got it all wrong, as this forum is for those people who have come up dry in their searches for technical information they seek....this forum is NOT not for those who appear to be too freaking lazy to do any sort of online search by themselves first or have legitimate technical questions for aspects of the information that they do not fully comprehend. Also, we don't aid lazy students during their homework.

If you had truly done an online search you would have encountered thousands of "hits" for the definition you seek. Please go away and bother so one else, or better yet, go do an online search before coming back to this forum! I'm too busy trying to help peeps who help themselves.......

actually i tried to look on net before posting here...but then didnt get exactly what i was looking for...

i needed the relation between yield strength and max allowable stress....and also how one could define basic allowble stress w.r.t FOS.

if u google maximum allowable stress one only gets the "values" for different materials,while as I was looking for the basics behind it,that is why i asked it like a basic question on this forum "what is maximum allowable stress"

am sorryy if you are too busy ,,you could have opted not to answer this post ,,that wud hav made u less bzzzy....

Perhaps....."dude"......you could have specifically asked for that in your original post !!

There are too many "newbies" on this forum who are either looking for someone to spoon-feed information or to educate them.

When a third world camel jockey asks fundamental questions about the calculation of volumes and areas, and then gets all upset and calls you rude if you don't answer him, you can only assume this is a forum out of control.

Oh, gutless one!

At least the "third world camel jockey" signed in to the forum.

if u google maximum allowable stress one only gets the "values" for different materials,while as I was looking for the basics behind it,that is why i asked it like a basic question on this forum "what is maximum allowable stress"

Try Google for yield strength then, you'll find what your looking for.

Various piping materials have yield and ultimate stresses. According to the safety factor required by the type of service (and governing codes), the allowable stress is the material stress divided by the safety factor.

For example, if the pipe material has an ultimate stress value of 60,000 psi, and the safety factor is 5:1 based on ultimate, then the allowable stress is 12,000 psi.

Other factors may also weigh into this, such as welded joint efficiency and thickness tolerances.

Maximum allowable stress is the the value of maximum stress for which piping element may be exposed in designing the system. This value covers the factor of safety over the maximum value of stress for that material under the design conditions. This requires temperature corrections for the value of stresses at design conditions.