×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

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!
  • Students Click Here

*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

Jobs

Underground Concrete Tank

Underground Concrete Tank

Underground Concrete Tank

(OP)
Im designing for the first time a water cistern. Its going to be 10 ft underground, ist 20ft by 12 ft and its going to contain 10,000 gals. My question is about the foundation, does the ground slab provides the foundation for the cistern walls or it needs independent footings?

RE: Underground Concrete Tank

Typically the base slab is the footing.  I might consider thickening the slab at the walls if the tank was large in diameter with significant overburden on top.

Just check the vertical shear at the base slab and you will see if it needs to be thicker or not.

RE: Underground Concrete Tank

try;
PCA publication,'Rectangular Concrete Tanks'.  Mine is dated 1994. Anybody aware of a latter version, or wether this has been pulled, thinking seismic of course.  In particular Manobe, Okabe Articles written in  1926 and 1929 no less.  Anybody have copies of these papers
Okabe, S. 1926. 'General Theory of Earth Pressure', Journal of Japan Society of Cvil Engineers 12,1.
Manobe, N. and H, Matasou. 1929.  'On the Determination of Earth Pressures During Earthquakes'. In the proceedings, World Engineering Congress.

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!


Resources