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03. How to model a vertically pipe supported by a Pipe clamp and spring supports as shown below:

Mike Dattilio

Applies To Product(s): AutoPIPE, Version(s): 2004, XM, & V8i Area: Modeling Original Author: Bentley Technical Support Group Dec 2014, AutoPIPE V8i 09.06.01.10 Problem: How to model a vertically…
- 6 months ago
- AutoPIPE
- AutoPIPE Wiki
16. Friction Pendulum System - Seismic Isolation - High Load Multi-Rotational Bearings

Ana Carla Peres

For RM Bridge inside OpenBridge Designer , as shown in the pictures below, the Friction Pendulum System - FPS - is a support device that provides the structure with some level of Seismic Isolation , it is also known as High Load Multi-Rotational - HLMR…
- 8 months ago
- LARS | LEAP | OpenBridge | OpenTunnel | RM
- LARS | LEAP | OpenBridge | OpenTunnel | RM Wiki
04. Would friction be considered during any movement of of piping supported by an incline support with Ultimate Force Gap setting enabled?

Mike Dattilio

Applies To Product(s): AutoPIPE Version(s): ALL; Area: Modeling Date Logged & Current Version June 2022 12.08.01.010 Problem: If an inclined support had a friction coefficient with Ultimate Force Gap enabled…
- over 1 year ago
- AutoPIPE
- AutoPIPE Wiki
W2164-12:System contains Gaps/Friction/Soil data. Please enable non-linear option in the following analysis sets warning message in AutoPIPE

Mike Dattilio

Applies To Product(s): AutoPIPE, Version(s): 2004, XM, & V8i Environment: N/A Area: Warning Original Author: Bentley Technical Support Group Problem: What…
- 3 months ago
- AutoPIPE
- AutoPIPE Wiki
Darcy Weisbach Friction Factor (f)

Martin Mav

Hi, In WaterGEMS, we specify roughness coefficient ( ε ) but the program doesn't show Friction Factor (f) calculated with respect to velocity, Reynold's number, diameter and other parameters. Is there any method by which we can see the calculated…
- over 4 years ago
- OpenFlows | Water Infrastructure
- OpenFlows | Water Infrastructure Forum
03. Why does line stop ignore friction?

Mike Dattilio

Applies To Product(s): AutoPIPE, Version(s): 2004, XM, & V8i Area: Modeling Original Author: Bentley Technical Support Group Dec 2014, AutoPIPE V8i 09.06.01.10 Problem: Would like to know…
- over 4 years ago
- AutoPIPE
- AutoPIPE Wiki
Modeling friction support in STAAD.Pro

Sye

Applies To Product(s): STAAD.Pro Version(s): ALL Environment: ALL Area: Modeling Subarea: Original Author: Sye Chakraborty, Bentley Technical Support Group …
- over 5 years ago
- RAM | STAAD | ADINA
- RAM | STAAD | ADINA Wiki
04. Support report indicates a load on a support who's open gaps never closed during an AutoPIPE Analysis, so why is there a load on the support in open gap direction?

Mike Dattilio

Applies To Product(s): AutoPIPE Version(s): ALL Area: Report Original Author: Bentley Technical Support Group Date Logged & Current Version June 2015 09.06.02.06 Problem: When reviewing…
- 27 days ago
- AutoPIPE
- AutoPIPE Wiki
06. Does friction affect SAM analysis results in AutoPIPE?

Mike Dattilio

Applies To Product(s): AutoPIPE Version(s): ALL; Area: Analysis Date Logged & Current Version Jan. 2018 11.02.00.08 Problem: Does friction affect SAM analysis results in AutoPIPE? Solution: In short, No…
- over 5 years ago
- AutoPIPE
- AutoPIPE Wiki
SUPPORT FRICTION COEFFICIENT INPUT

Dipesh Khadka

I am currently analyzing a high-pressure steam header line. The steam header has 3 legs, two sliding and a fixed leg at the centre. The legs are welded around the bottom circumference of the header and to a plate at the bottom. And those plates are bolted…
- Answered
- over 5 years ago
- AutoPIPE
- AutoPIPE Forum
01. How to turn friction off for a Concentrated Force in an AutoPIPE model?

Mike Dattilio

Applies To Product(s): AutoPIPE Version(s): ALL; Area: Modeling Date Logged & Current Version Sept. 2017 11.01.00.23 Problem: How to turn friction off for a Concentrated Force? Solution: Friction is defined…
- 4 months ago
- AutoPIPE
- AutoPIPE Wiki
RE: Ram Concept - Passive Pressure & KFr

Seth Guthrie

In Ram Concept the loads can be uniform or sloped, but they are always linearly acting so there is no special way of applying passive pressure. Similarly, our springs are linear, so we can't exactly simulate friction, but your equation above is a reasonable…
- over 6 years ago
- RAM | STAAD | ADINA
- RAM | STAAD Forum
10. How are a support's axial force due to xxx load case calculated in AutoPIPE's reports?

Mike Dattilio

Applies To Product(s): AutoPIPE Version(s): ALL; Area: Results Original Author: Bentley Technical Support Group Date Logged & Current Version April. 2017 11.00.00.22 Problem: How are supports axial force…
- over 4 years ago
- AutoPIPE
- AutoPIPE Wiki
14. Is there any way to consider friction only the expansion case but not in any occasional AutoPIPE Wind loads?

Mike Dattilio

Applies To Product(s): AutoPIPE, Version(s): ALL Environment: N/A Area: Load Original Author: Bentley Technical Support Group Problem: Is there any way to…
- over 6 years ago
- AutoPIPE
- AutoPIPE Wiki
W2143-76: Friction scale factor is zero. Friction at all supports will be ignored for following analysis set warning message in AutoPIPE

Mike Dattilio

Applies To Product(s): AutoPIPE, Version(s): ALL Environment: N/A Area: Warning Original Author: Bentley Technical Support Group Problem: The following is…
- over 2 years ago
- AutoPIPE
- AutoPIPE Wiki
RE: +Y supports in time history analysis

Mike Dattilio

Hello Eswara, When performing a dynamic analysis (ex. Time History) requires to first run a modal analysis. From AutoPIPE help (Reference Information> Analysis Consideration> Modal Analysis> ): The structure is assumed to be linear and thus all gaps…
- over 6 years ago
- AutoPIPE
- AutoPIPE Forum
13. How does friction affect Non-code User combinations in AutoPIPE?

Mike Dattilio

Applies To Product(s): AutoPIPE Version(s): ALL; Environment: N/A Area: Analysis Original Author: Bentley Technical Support Group Date Logged & Current Version Dec. 2016 10.01.00.09 Problem: …
- over 6 years ago
- AutoPIPE
- AutoPIPE Wiki
12. How to factor a combination correctly, 1.2G+1.5E in AutoPIPE?

Mike Dattilio

Applies To Product(s): AutoPIPE Version(s): ALL; Environment: N/A Area: Combination Original Author: Bentley Technical Support Group Date Logged & Current Version Sept. 2016 10.01.00.09 Problem…
- over 4 years ago
- AutoPIPE
- AutoPIPE Wiki
C. Piping model with beam and soil does not converge, what should be done in AutoPIPE to avoid?

Mike Dattilio

Applies To Product(s): AutoPIPE Version(s): ALL; Area: Analysis Original Author: Bentley Technical Support Group Date Logged & Current Version Sept. 2016 10.01.00.09 Problem: When analyzing a model beam…
- over 4 years ago
- AutoPIPE
- AutoPIPE Wiki
06. How to solve a friction force problem found in a Log file for AutoPIPE?

Mike Dattilio

Applies To Product(s): AutoPIPE Version(s): ALL; Environment: N/A Area: Original Author: Bentley Technical Support Group Date Logged & Current Version Sept. 2016 10.01.00.09 Problem: When analyzing…
- over 7 years ago
- AutoPIPE
- AutoPIPE Wiki
Why does Dynamic (time-history) Analysis not include support friction?

Nick.90

Surely this will be a significant factor when performing a dynamic analysis of a large bore line completely filled with liquid. What is the argument for/against support friction in dynamic analysis? Thanks, Nick.
- Answered
- over 7 years ago
- AutoPIPE
- AutoPIPE Forum
RE: Flex table, Darcy-Weisbach and absolute roughness

Craig Calvin

Hello Kailainathan, To use the Darcy-Weisbach method: Open the steady state calculation options used by the current scenario Set the Friction Method to Darcy-Weisbach To my understanding, the "Absolute Roughness" value is called "Darcy-Weisbach…
- over 8 years ago
- OpenFlows | Water Infrastructure
- OpenFlows | Water Infrastructure Forum
21. Saddles - Calculation of the horizontal longitudinal reactions (RaHL) When do the sliding saddles start to move?

JamieP

Ans: It depends on the friction factor input in the dialog of the saddles between the sliding saddles and the concrete or the plate under the sliding saddles. A small friction factor value indicates that a PTFE plate or in some cases rolling bars have…
- over 3 years ago
- AutoPIPE
- AutoPIPE Wiki
01. Can AutoPIPE model friction at a spring support?

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 Mar. 2015…
- 10 months ago
- AutoPIPE
- AutoPIPE Wiki
03. Spring Hanger Pipe Supports Modeling Examples in AutoPIPE and FAQ's

Mike Dattilio

AutoPIPE help has the following Hangers support example systems available for review, Inside of AutoPIPE, select: Help > Contents> Contents Tab> Modeling Approaches> Modeling Approaches> Hangers> Note: see each support example and related questions…
- 11 months ago
- AutoPIPE
- AutoPIPE Wiki