Water Storage Tank Design

The first thing to do is to decide on its location. In addition to 15T of water there might be 5T of steel to hold it up, maybe more. This will determine the method of support required: what's underneath it, how to get it in, and so-on. Think through the steps from start to finish. Do some detailed sketches. After that contact tank fabrication specialists and discuss it with them with a view to them doing the remainder of the design, fabrication and installation as a bought-out service; transfer the risks.

Over time, organically-grown knowledge and experience will flourish!

Thank you very much for replys...

Go to Spirax Sarco site, look up Boiler House Accessories and you will find the spec. sheets of these type of Rectangular Tanks indicating accessories like: Flash Condensing Deaerators, Steam injectors with Temperature Control Valves, Circulating Pumps etc.

If you can't find an off the shelf tank to suit your requirements you will have to enroll in night school classes on strength of materials, machine design etc. to fill in the gaps in your education.

For fresh engineer, if the company do not have any previous project reference calculation, the other best way is to approach water storage tank suppliers from the yellow pages for information. As a fresh engineer, to build a good relationship with the related suppliers is crucial for your present and future jobs as well as receive any new updated technical/market information.

What is this tank being used for? Why that particular dimension? Is there any pressure involved?

Is it open to the atmosphere?

Do yu understand the process it will be utilized for?

Why reinvent the wheel? To utilize stock storage tanks, with warranties, may be a better way to go.

You should use API650 (Welded Steel Tanks for Oil Storage) for your design. Everything you need is covered by that standard.

try this web site

http://www.areotank.com/ap0090.htm

nelson corzo/ tampa fl

API 650 as mentioned above or ASME standard ref book will tell you the basic formula to calculate the thickness of the shell and its sides. U may need to know the materials so that you can have the table for tensile strength to calculate the thickness. its all on the ref book. Your company should have these ref. book for standard fabrication. 15 m3 is quite medium large tank to consider. If your company does not have these ref book. It is not a reliable company to trust on this fabrication work at all.

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Little knowledge is quite dangerous

You can use API 650 for Welded Steel Tanks for Oil Storage, or AWWA for water tanks,

For API 650, in US Customary units:

t_d = [ 2.6 D (H– 1) G / S_d ] + CA

t_t = 2.6 D (H– 1) / S_t

where,

t_d = design shell thickness, (in.)

t_t = hydrostatic test shell thickness (in.)

D = nominal tank diameter, (ft)

H = design liquid level, (ft)

= height from the bottom of the course under consideration to the top of the shell including the top angle, if any; to the bottom of any overflow that limits the tank filling height; or to any other level specified by the purchaser, restricted by an internal floating roof, or controlled to allow for seismic wave action,

G = design specific gravity of the liquid to be stored,

CA = corrosion allowance, (in.),

S_d = allowable stress for the design condition, (lb_f/in²)

S_t = allowable stress for the hydrostatic test condition, (lb_f/in²)