Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • 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.

Students Click Here

Detailing of Complicated roof as shown in attached image

Detailing of Complicated roof as shown in attached image

Detailing of Complicated roof as shown in attached image


I have more than 5 years experience working as design engineer. Most of the times I came across flat or maximum gable roof.
This time I have to work on a bit complicated roof shape as shown in attached image using cold formed steel. I am facing difficulty in visualizing the shape of the trusses at different points. Can anyone help me in identifying the truss shapes step by step. Or atleast examples of junction of valleys, hips and ridges. Or can recommend some online material to visualize this sort of roof.
There are options in the software to generate the roof shapes but for generating roof trusses I have to first make plan on paper.
Any help will be really appreciated.


RE: Detailing of Complicated roof as shown in attached image

Obviously based on the fact that the external hips are equally subdividing the total angle you are dealing with the exterior around the perimeter that is a constant roof slope perpendicular to the exterior roof edges. Similar for the inside depressed area, all perpendicular to the platform, it's just twisted in plan, so the ridge lines are not flat. Because of this each truss will be different. Identify the RL's at the ridges based on the roof slopes and distance from the perimeter. Then develop sections at the truss lines, truss shape will naturally fall out of thi,but every truss is going to be different. It would be much simpler if the platform was able to be parralel to the roof edges.

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.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


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 industry’s greatest asset—real-time data—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:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close