UG-37(a) description of strength reduction factor

Rules for the Construction of Pressure Vessels

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DavidK
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Joined: Sun 17. Jun 2018, 21:14
Location: Calgary, Canada

UG-37(a) description of strength reduction factor

Post by DavidK » Fri 21. Sep 2018, 22:43

Hi everybody.

UG-41(a) states "No credit may be taken for the additional strength of any reinforcement having a higher allowable stress value than that of the vessel wall."

UG-37(a) describes "fr" as a strength reduction factor, not greater than 1.0.

Does UG-41(a) broadly apply to fr1, fr2, fr3, and fr4? In other words, is the value of any of these reduction factors not to exceed 1.0? This would seem to make sense considering UG-41(a).

David

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Frohnert
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Re: UG-37(a) description of strength reduction factor

Post by Frohnert » Tue 25. Sep 2018, 10:25

Hi David,

Yes, the requirement "not greater than 1.0" for fr is applicable to fr1-2-3-4.
Best regards,
Michael Frohnert

DavidK
Posts: 4
Joined: Sun 17. Jun 2018, 21:14
Location: Calgary, Canada

Re: UG-37(a) description of strength reduction factor

Post by DavidK » Tue 25. Sep 2018, 14:53

Thank you, Michael!

Cheers!

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