Urgent Info!

[4365]

Am trying to fill up a datasheet on Atmospheric Tank by API 2000. I need to know the range of L/D ratio for atmospheric tanks.
Could an expert in this area furnish me with the necessary range.
Thanks in advance.

4365

 

[Montemayor]

4365:

I don't know what data goes in your datasheet, but API tanks are not measured nor designed by their "L/D" (Length/Diameter) ratio. I also don't know what makes you think this would be a worthy ratio or characteristic to know about API storage tanks. What is more important is wind loads, stability, type of roof, size of available and usable steel plates, etc., etc, and other more practical criteria.

 

[TD2K]

The height of larger atmospheric storage tanks are often set by the plates which come in 6' or 8' widths which gives you a range of heights. The diameter is then set to give you the required storage capacity. What type of capacity are you looking for?

 

[cub3bead]

My civil engineer friends have always told me that they will remain friends if I keep the tank heights to 40 feet of less when storing water or materials of similar density. Their rationale is that the bearing load, for most applications, does not get to be a big problem in the design of the tank foundation but it does if you add another row to the tank.

If the ground shakes (i.e. earthquakes) then all bets are off and you had better get with your civl/structural team and see if you can optimize the tank cost.

Keeping to standard plate sizes is a good idea since you minimize field cutting and material wasteage.

 

[unclesyd]

Use "Pi diameters" in calculating the tank diameter to again saving cutting 10 ft or 12 ft plates.

 

[KeithRas]

I am a bit confused. API 2000 is about venting API tanks for pressure & vacuum relief, so what does H/D ratio have to do with that (unless you are trying to see how much vaccuum the tank can take without collapsing?)

 

[Montemayor]

4365:

It has been a week since you alarmed everyone with your "urgency". Crying "Wolf" or acting like Chicken Little is making a reputation for you with the end result that no one is going to respond next time.

You could at least have the courtesy and education to say "thank you, but I no longer need your help".

 

[bimr]

Maybe what this fellow wants to know is that if you are trying to determine the lowest and most economical cost of steel tank fabrication, the tank L/D generally falls into the 2 to 3 ratio.

 

[MortenA]

Maybe Montemayor's post says it all: This "fellow" only logged in once - started a tread and has never logged on again :-(

Best regards

Morten