×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Are you an
Engineering professional?
Join Eng-Tips Forums!
• Talk With Other Members
• Be Notified Of Responses
• Keyword Search
Favorite Forums
• Automated Signatures
• Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

#### Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

# Mitre Bend Dimensions - Calculation Formulae

## Mitre Bend Dimensions - Calculation Formulae

(OP)
Hi All,

I am doing Pipe Stress Analysis that involves me to model two 36" Mitre Bends. The first 36" bend is a 45 Degree Mitre bend with one cut section and the second one is a 90 degree Mitre bend with 4 cut sections. I wanted to know if anyone can post the formulae to calculate the Mitre Bend dimensions such as Bend Radius (R), dimensions A, B, C,D and E. If you can point me to the relevant document where I can find these formulae also it would be great.

Thanks and Regards,
Pavan Kumar

### RE: Mitre Bend Dimensions - Calculation Formulae

You decide the number of cuts and the total bend radius. Draw it up in CAD. The SIF is calculated from design code.

### RE: Mitre Bend Dimensions - Calculation Formulae

The Pipe Fitter's And Pipe Welder's Handbook (a small, soft cover book that you can buy on Amazon) has a chapter that includes the calculations & layout for fabricating fittings like this.

### RE: Mitre Bend Dimensions - Calculation Formulae

Unless you are a competent engineer how to use mitre bending do not use it since many competent engineers still getting wrong in the details.

First you need to understand that a proper circular geometry is needed to weld onto the piping on both side. So you need a straight length with circular peace for this purpose. Other than that selecting the number of internal peaces is your choice, but if you are going to analyse the piping agains the codes you may need to stick the code images for the established stress intensification factors unless you do not know SIF for your selection.

You can cut the peaces from the straight pipe or develop and formula to make the peaces from plate in case the code allows this construction with longitudinal welding for fitting.

Everything is geometry, I guess you can manage it.

#### Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

#### Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

#### Resources

Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now
The Great Project Profitability Debate
A/E firms have a great opportunity to lead the world into the future, but the industryâ€™s greatest assetâ€”real-time dataâ€”is sitting wasted in clunky, archaic ERP platforms. Learn how real-time, fully interactive dashboards in a modern ERP allow you to unlock data that will shape the future of the world. Download Now

Close Box

# Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

• Talk To Other Members
• Notification Of Responses To Questions
• Favorite Forums One Click Access
• Keyword Search Of All Posts, And More...

Register now while it's still free!