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JStephen, I agree with the 1/4" minimum fillet weld on the ID. For the OD, I typically dimension the calculated value and specify that it is the minimum and let the welder use their judgement on the actual or maximum dimension considering hub thickness. I like to let the welder know what is...

Prex: I believe I understand the logic in this now. The hub length is only required when g1/g0 is greater than 1. When they are equal, the hub length is to be omitted from the calculation rather than to input 0 as its value. If this is right thank you for the clarification. Any chance you had...

Prex: I understand that when g0=g1, f automatically becomes 1 because the calculated value is less than 1. Lets approach this differently. There are 4 variables you need to know in order to calculate the flange factors. They are (g0,g1,h,h0). When g1=g0, the calculated values should be...

Prex, I was assuming people would just use the allowable stress and modulus of elasticity values provided in the input values and therefore eliminate the need to know design temperature and material. The original intent of this calculation was to determine flat head thickness values for hydro...

Hey Guys, I wanted to upload a sample PDF calculation of the Appendix Y spreadsheet I have been working on to share my results. All dimensions are in inches and stress values in psi. If anyone sees any errors or has some constructive criticism please let me know! One question I do have is when...

Prex: Thanks for the link. I have come across that web page before and it was a good reference for some points. doct9960: Those journals look promising however I could not get my hands on any without paying for them through ASME. I searched and searched! Spending some time working the code I...

Is there really nobody with any familiarity in this topic?

Hello, I am trying to calculate the required thickness of unstayed flat heads with metal to metal contact outside the bolt circle per ASME Section VIII non-mandatory appendix Y with reference to mandatory appendix 2 as necessary. My main point of focus is on a category 1 class 3 assembly per...