Slab Design

You need a soils report--Do not do any engineering on this site without a certified soils report, that will give you compaction stats, and perc/ soli type measurements. Then take those calcs to a Structural Engineer, and let him tell you what to build. This is not something done over an web site. Any design will be based on these tests to start--c-mac

There is more information require before you can design the slab such as soil test, wind load. But I would not recommend you to do it, hire a PE to get the job done there are too many risks with a diesel storage tank with a diameter of 13.9 metres.

Your dealing with a pretty big tank ~326,000 gals. If its vertical its about ~8.2 meters in height. You are going to need a PE for a stamp/designed and soils expert involved. Also check with your local government, environmental agencies, and other agency that deal with combustible liquids and tanks. They will each have there own requirements.

Here in PA any time a tank goes in the townships are involved, Dept of Environmental Protection, Dept of Labor and Industry, and NFPA. It takes months and thousands of dollars to get them approved.

Good Luck

Hi John,

Also need a certain volume under the tank to contain any leak and/or accident. The volume must be established after local and government authorities' recommendations. Good luck with the project, Gil.

I agree.

I've never dealt with a tank that size before so I wasn't sure if a secondary containment would be necessary or if they are made with a double wall. In PA its 110% of capacity. That why it's important to check with your federal, state, and local agencies before you work on something like this.

John

I am a Professional Civil Engineer in Illinois, USA. I am one more voice added to the few here indicating that this is not something to undertake as a DIY project. Not only is a soils report required, but the points of loading have to be designed for. Typically additional reinforcement is added at these location for shear stress. But depending on the location, bending stress may also be a concern. In addition, the sub-grade may need some modification to create a working platform. The strength of the available concrete in your area, the conditions the concrete will be exposed to, etc. area also among the less technical, but equally important items to be considered.

Too many specific details are required to give you a general answer that provides an economical and effecient design.

Dear Mr. Danie

First and fore-most requirement is test to be conducted for SOIL LOAD-BEARING CAPACITY. Based on the Load - Bearing Capacity the area, re-inforcement and thickness will be designed.

IN THE EVENT OF ANY RUPTURE OF THE TANK, which we do not wish, the entire liquid should be contained by a dyke wall. Hence DYKE WALL is a MUST.

It is not simply put rcc slab and erect the tank and use. This should be done by a competent civil engineer, considering the local authoritie's or STATUTORY regulations also.

sdr710