×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

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

movement& construction joins in tanks

movement& construction joins in tanks

movement& construction joins in tanks

(OP)
could anyone please help explaining to me how could we make contraction joint in the walls of a circular tank knowing that the resisting mechanism is achieved by direct tension ( ring tension) because i think that such joints would break the resisting mechanism and the wall will only resist the lateral pressure by flexure ( vertical cantilever action). thanks

RE: movement& construction joins in tanks

Please review:

Link

RE: movement& construction joins in tanks

(OP)
thank you bimer for these specialty types of joints of which i didn't have an experience but still my concern remains: are we still good dealing with the ring tension equation: t=pr ?!

RE: movement& construction joins in tanks

Quote (zohl

... how could we make contraction joint in the walls of a circular tank knowing that the resisting mechanism is achieved by direct tension ( ring tension) because i think that such joints would break the resisting mechanism and the wall will only resist the lateral pressure by flexure ( vertical cantilever action). thanks)


I suspect you are looking for construction joint rather than contraction joint...If the reinforcement is cut at CJ or EJ , you can not use the hoop tension formula.. The ring wall shall be designed as cantilever wall.( similar to the retaining walls )..
Moreover, it is common practice conservatively ,to design as cantilever wall the circular tank walls ..

If you provide more info.( size and depth of the tank, temperature etc..) you may get better responds..

RE: movement& construction joins in tanks

(OP)
thanks HTURKAK THE TANK IS TRICKLING TANK OF 20 m diameter and 3.5 m height with 0.5 m freeboard and 2 m depth of natural (gravel) filer media supported on perforated platform which i am planning to use heavy duty grating. about the temp. it is high temp and high humidity ( red sea coast). any advising help will be gratefully appreciated

RE: movement& construction joins in tanks

Quote (zohl
...THE TANK IS TRICKLING TANK OF 20 m diameter and 3.5 m height with 0.5 m freeboard and 2 m depth of natural (gravel) filer media supported on perforated platform which i am planning to use heavy duty grating. about the temp. it is high temp and high humidity ( red sea coast). any advising help will be gratefully appreciated)


For dia . 20m, my suggestion will be, no need to expansion and contraction joints.. If you have the full set formwork, the wall could be poured with single shot. Otherwise, provide CJ with waterstops and continuous rebar . acc to formwork available ..may be 6 segments. The wall thick. could be 30 cm.

Good luck..

RE: movement& construction joins in tanks

I agree with HTURKAK that no expansion or contraction joints should be used. But I'd add construction joints with waterstop at 6th points to reduce pours to about 10 meters each.

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


Resources

Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
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

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