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Pipe and Vessel Stress Analysis - Wiki
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Calculation
AutoPIPE
09.03.00.08
allowable
allowable stress
ASME
B31.3
B31.4
B31.8
bend
Code Compliance
critical
defect
DNV
En13480
Hoop
ISO 14692
Known Issues
NC
ND
Nuclear
Piping Code
Report
results
SIF
stress
Von Mises
02. SIF calculations at TEEs are all the same when analyzed per EN13480 -2012 piping code in AutoPIPE, why?
Mike Dattilio
Applies To Product(s): AutoPIPE Version(s): 2004, XM, V8i Area: Calculation Original Author: Bentley Technical Support Group Date Logged & Current Version Mar. 2015 09.06.01.11 Problem…
over 3 years ago
AutoPIPE
AutoPIPE Wiki
01. Why is Von Mises stress calculations different than automatically calculated ASD in AutoPIPE ?
Mike Dattilio
Applies To Product(s): AutoPIPE Version(s): ALL; Area: Calculations Date Logged & Current Version April. 2018 11.03.00.08 Problem: By calculating the Von Mises stress in a separate way, the result it is different…
over 3 years ago
AutoPIPE
AutoPIPE Wiki
02. DNV 2012 references a new definition of bending, but AutoPIPE help is different
Mike Dattilio
Applies To Product(s): AutoPIPE Version(s): ALL; Area: Calculations Date Logged & Current Version April. 2014 09.06.00.15 Problem: In the AutoPIPE on line manual (help/contents/code/DNV 2012/ASD) there are references…
over 3 years ago
AutoPIPE
AutoPIPE Wiki
03. ASD results are lower than the hoop stress results
Mike Dattilio
Applies To Product(s): AutoPIPE Version(s): ALL; Area: Calculation Date Logged & Current Version April. 2014 09.06.00.15 Problem: AutoPIPE's (automatic) calculation of the ASD is lower than the hoop stress and…
over 3 years ago
AutoPIPE
AutoPIPE Wiki
05. Results for DNV code combinations Collapse and Prop Buck are 0.00 or very small when using AutoPIPE
Mike Dattilio
Applies To Product(s): AutoPIPE Version(s): ALL; Area: Calculations Date Logged & Current Version April. 2014 09.06.00.15 Problem: The results for DNV code combinations Collapse and Prop Buck are 0.00 or very…
over 3 years ago
AutoPIPE
AutoPIPE Wiki
08. Explain Load Controlled Buckling check “stress value” and "allowable value” in AutoPIPE's output report
Mike Dattilio
Applies To Product(s): AutoPIPE Version(s): ALL; Area: Report Date Logged & Current Version April. 2014 09.06.00.19 Problem: Regarding the LCC (Load Controlled condition) check according to DNV 2012 (section…
over 3 years ago
AutoPIPE
AutoPIPE Wiki
05. How are Actual OD, Corrosion Allow, and Mill tol. used in AutoPIPE's analysis calculations?
Mike Dattilio
Applies To Product(s): AutoPIPE Version(s): ALL; Area: Calculations Date Logged & Current Version Jan 2020 12.02.00.14 Problem: How are the pipe properties (ex.Actual OD, Corrosion Allow, Mill tol., etc..) used…
over 3 years ago
AutoPIPE
AutoPIPE Wiki
19. Bending Stress reported by AutoPIPE is different from hand calculated values, why?
Mike Dattilio
Applies To Product(s): AutoPIPE Version(s): ALL; Area: Code Stress Date Logged & Current Version Dec 2019 12.02.00.14 Problem: When plugging in the outputted values for in and out of plane bending moments, stress…
over 3 years ago
AutoPIPE
AutoPIPE Wiki
03. How is the automatic bend radius (ie. Short, Long, 3D, 5D) calculated in AutoPIPE?
Mike Dattilio
Applies To Product(s): AutoPIPE Version(s): ALL; Area: Input listing, Bend Date Logged & Current Version Nov 2019 12.02.00.14 Problem: How does AutoPIPE calculate the Short, Long, 3D, and 5D bend radius for…
over 3 years ago
AutoPIPE
AutoPIPE Wiki
18. Would code stress results be the same regardless of which piping code was used in AutoPIPE?
Mike Dattilio
Applies To Product(s): AutoPIPE Version(s): ALL; Area: Results Date Logged & Current Version May 2019 12.01.00.10 Problem: Would code stress results be the same regardless of which piping code was used in AutoPIPE…
over 4 years ago
AutoPIPE
AutoPIPE Wiki
08. How does AutoPIPE calculate ASME B31.1 Hoop stress?
Mike Dattilio
Applies To Product(s): AutoPIPE Version(s): ALL; Area: Date Logged & Current Version May 2019 12.01.00.09 Problem: How does AutoPIPE calculate ASME B31.1 Hoop stress? Solution: Please see the following AutoPIPE…
over 4 years ago
AutoPIPE
AutoPIPE Wiki
06. Does AutoPIPE calculate the required pipe wall thickness?
Mike Dattilio
Applies To Product(s): AutoPIPE Version(s): ALL; Area: Calculation Date Logged & Current Version April 2019 12.00.00.14 Problem: Does AutoPIPE calculate the required pipe wall thickness? Solution: At this…
over 3 years ago
AutoPIPE
AutoPIPE Wiki
02. How does AutoPIPE calculate the weight of a typical pipe fittings (i.e. Tee, elbow, reducer, etc..)?
Mike Dattilio
Applies To Product(s): AutoPIPE Version(s): ALL; Environment: N/A Area: Modeling Original Author: Bentley Technical Support Group Date Logged & Current Version Nov. 2016 10.01.00.09 Problem: …
over 5 years ago
AutoPIPE
AutoPIPE Wiki
07. How are the ASME B31.3 longitudinal pressure stress calculated in AutoPIPE?
Mike Dattilio
Applies To Product(s): AutoPIPE Version(s): V8i, CONNECT; Area: Calculations Original Author: Bentley Technical Support Group Date Logged & Current Version Oct. 2015 10.00.00.10 Problem…
over 5 years ago
AutoPIPE
AutoPIPE Wiki
02. How to find out what SIF does AutoPIPE use for stress calculations in each point, for example in tees using ASME ND 1992+1993 addenda?
Mike Dattilio
Applies To Product(s): AutoPIPE Version(s): 2004, XM, V8i Area: Analysis Original Author: Bentley Technical Support Group Date Logged & Current Version Jan 2015 09.06.01.10 Problem…
over 4 years ago
AutoPIPE
AutoPIPE Wiki
03. Can you please explain what is zero moment and its involvement in ASME ND equation 10 code stress combination for thermal case?
Mike Dattilio
Applies To Product(s): AutoPIPE Version(s): 2004, XM, V8i Area: Analsyis Original Author: Bentley Technical Support Group Date Logged & Current Version Jan 2015 09.06.01.10 Problem…
over 4 years ago
AutoPIPE
AutoPIPE Wiki
04. Where should then Non-repeated Anchor Movement (e.g. Building Settlement) be accounted for if not in ASME ND Equation 10a in AutoPIPE?
Mike Dattilio
Applies To Product(s): AutoPIPE Version(s): 2004, XM, V8i Area: Analysis Original Author: Bentley Technical Support Group Date Logged & Current Version Jan 2015 09.06.01.10 Problem…
over 4 years ago
AutoPIPE
AutoPIPE Wiki
05. How to define building settlement for a Nuclear codes?
Mike Dattilio
Applies To Product(s): AutoPIPE Version(s): ALL Area: Modeling Original Author: Bentley Technical Support Group Date Logged & Current Version Jan 2015 09.06.01.10 Problem: How to…
over 4 years ago
AutoPIPE
AutoPIPE Wiki
06. Why does the calculated allowable for "ASME ND (2007) PRE-VERIFICATION STRESS REPORT", Eq 8, Load case = GR, not match the hand calculated value in AutoPIPE?
Mike Dattilio
Applies To Product(s): AutoPIPE Version(s): 2004, XM, V8i Area: analysis Original Author: Bentley Technical Support Group Date Logged & Current Version Jan 2015 09.06.01.10 Problem…
over 4 years ago
AutoPIPE
AutoPIPE Wiki
03. Calculation of fa (allowable expansion stress range) for austenictic steel 1.4301 X5CrNi18-10 is significant difference between hand calculation and AutoPIPE Results, WHY?
Mike Dattilio
Applies To Product(s): AutoPIPE Version(s): 2004, XM, V8i Area: calculations Original Author: Bentley Technical Support Group Date Logged & Current Version May 2015 09.06.02.06 Problem…
over 3 years ago
AutoPIPE
AutoPIPE Wiki
03. Why are the HOOP stress results different throughout the AutoPIPE model?
Mike Dattilio
Applies To Product(s): AutoPIPE Version(s): All Area: Report Original Author: Bentley Technical Support Group Date Logged & Current Version May 2015 09.06.02.06 Problem: Why are…
over 4 years ago
AutoPIPE
AutoPIPE Wiki
"Code Compliance" sub-report using Results> Output Report in AutoPIPE
Mike Dattilio
Comments, Questions, and Answers: Note: see " Piping Code Calculations - AutoPIPE " wiki for more Code specific calculations and reporting errors Item #1: What is the meaning of: [xx%] [TR] w/sus. load margin Item #2: Why are Code stress results…
over 1 year ago
AutoPIPE
AutoPIPE Wiki
06. What value of Bend radius is AutoPIPE using when calculating the SIF of a 3/4" NPS, when radius = short, Long, 3D, and 5D ?
Mike Dattilio
Applies To Product(s): AutoPIPE Version(s): 2004, XM, V8i Area: Calculation Original Author: Bentley Technical Support Group Date Logged & Current Version July 2015 09.06.02.06 Problem…
over 5 years ago
AutoPIPE
AutoPIPE Wiki
05. How to calculate AutoPIPE's En13480 calculation for pressure extension stress
Mike Dattilio
Applies To Product(s): AutoPIPE Version(s): 2004, XM, V8i Area: Calculation Original Author: Bentley Technical Support Group Date Logged & Current Version July 2015 09.06.02.06 Problem…
over 3 years ago
AutoPIPE
AutoPIPE Wiki
02. For ASME B31.4, why are the fields "Use nominal thickness" and "Use nom. Thk. for Hoop" unchecked in AutoPIPE V8i 09.06.00.15?
Mike Dattilio
Applies To Product(s): AutoPIPE Version(s): V8i Area: Calculations Original Author: Bentley Technical Support Group Date Logged & Current Version Aug. 2015 09.06.02.06 Problem: …
over 5 years ago
AutoPIPE
AutoPIPE Wiki
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