×
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

How To Calculate Pressure of Underground tank walls and how to calculate wall thickness.

How To Calculate Pressure of Underground tank walls and how to calculate wall thickness.

How To Calculate Pressure of Underground tank walls and how to calculate wall thickness.

(OP)
Hello all

I was hoping someone could help point me in the right direction regarding the following problem.

I have 2 x tanks, 1 x cylindrical and the other rectangular of a given depth H that will be installed below ground with just the top of the tank exposed as shown below:-



These tanks will contain sewage and I am trying to figure out how to calculate the maximum pressure exerted on the wall of the tanks due to the surrounding soil and what thickness should the walls be in order to withstand the maximum pressures.

The tank will be installed in a location where the ground conditions are virtually dry (so I don't need to consider water pressure) and the soil is composed of hard gravel / sand.

Any help will be greatly appreciated.

Thank you.

RE: How To Calculate Pressure of Underground tank walls and how to calculate wall thickness.

You will need a Geotechnical Engineer to do some drilling and/or sampling of the soil at your site. He/she will be able to give you all the information you would need to calculate your pressures. Information like soil unit weight, friction angle, bearing capacity, settlement criteria, etc. Once you have this data it should be a fairly straightforward process to calculate the pressures that the soil is exerting on the tanks.

As for the tanks themselves, I won't be much help at all as I'm not a Tankologist.

RE: How To Calculate Pressure of Underground tank walls and how to calculate wall thickness.

I would suggest to consider consulting mechanical engrs for the design of tanks, thanks

RE: How To Calculate Pressure of Underground tank walls and how to calculate wall thickness.

The Use Of Corrugated Culvert

Although metal corrugated culvert pipe has many advantages, if it is installed improperly or used unreasonably, it will not be able to achieve the desired effect and even bring about economic losses. The following items must be paid attention to when using or modifying:



1. To prevent the metal corrugated culvert from being subjected to torsion and shearing force, special attention should be paid when screwing the joint nut.



2. Reasonably select the actual bending radius R. R can be selected as follows: R=KRmin. Allowable minimum bending radius for corrugated culvert. K is the empirical coefficient. If the K value is selected too small, the hose diameter will be repeatedly bent, which is prone to fatigue failure and stress concentration; if the K value is too large, it will cause material waste and difficulty in layout. Generally selected in the range of 1~2.2.



3. In the process of use, ensure that the hose braided mesh sleeve is not mechanically damaged by knocks, bumps, abrasions, and bumps.



metal corrugated culvert

metal corrugated culvert



4. Correctly choose the nominal length L of the metal corrugated culvert. The price of corrugated culvert is higher. If the length is too long, it will increase unnecessary investment, increase flow resistance, and may cause additional vibration. However, if the length is not enough, it is easy to bend at the joint welding seam, and the metal corrugated culvert cannot work in the natural bending state, and the service life will be shortened. For the metal corrugated culvert configured with two parallel sections moving longitudinally, it should be determined as follows: L=4R ten 0.5S+△ where: R is the actual bending radius of the hose; S is the distance between the opening and closing positions of the hot plate ;△The height difference between the opening and closing position of the hot plate and the fixed joint end of the hose. Obviously, the fixed end of the metal corrugated culvert is set at the center height of the opening and closing position of the pressure plate, and L is the shortest.

We are metal corrugated culvert pipe suppliers. Please feel free to contact us if you are interested in our corrugated culvert pipes or other products.

Corrugated Metal Pipe, Corrugated Metal Culvert China suppliers--www.corrugatedmetalculvert.com

RE: How To Calculate Pressure of Underground tank walls and how to calculate wall thickness.

Matthew, sorry to be late to the party --

If the tanks contain sewage, common practice in this area would be to design the tanks of reinforced concrete (potentially prestressed, depending on scale).

In that case, PCA has produced two useful guides, one for rectangular tanks, one for circular (cylindrical) tanks.

----
just call me Lo.

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