Allowable stress of steel pipes? ?
Thread Content
I would like to ask whether the allowable stress in this table already takes the safety factor into account? ? Still not included in the calculation? ? ? ?
The allowable stress is a value that takes into account a certain safety factor based on the stress level; it already includes a certain amount of safety margin. It can also be considered as the maximum safe stress level – the stress should be below this allowable value; exceeding it means it is unsafe. If possible, sufficient margin should be reserved, and use should be avoided in areas close to the allowable stress level
Thank you. So that includes a safety factor; when selecting a pressure value in a software, a safety factor of 2.4 is applied, which results in a very thick wall thickness. According to chemical engineering manuals, such tables already take the safety factor into account, and generally that value is used directly. However, what you said makes sense – the value should be lower than that. It’s just that the software confuses me
You should make sure whether tensile strength or yield strength needs to be entered; dividing by a certain safety factor gives the allowable stress. . .
Even though the allowable stress includes a safety factor, a certain margin still needs to be reserved; walking on a tightrope is too dangerous
Unless otherwise specified, in general the values in the data table already take safety factors into account and can be used as the maximum limit directly :)