Error 20519 (with image)
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As shown in Figure V-1004, the center elevation is 2.5 meters, from 20519. 20519 actually does not provide a formula for calculating the center elevation. Typical horizontal equipment comes with specified wall thicknesses and gasket thicknesses, and the supporting foundations are also designed to have integer values; therefore, once the equipment is installed in place, its actual elevation at the center will be slightly above 2.5 meters. I feel the standards aren’t strict enough; are there any?
You’re being a bit picky here; diagram V-1004 simply shows that horizontal tanks are indicated using their centerline elevation. It’s not certain that the distance from the center line of this container to the supporting base plate is an integer. Who knows, maybe some reviewer with OCD just likes to pick on things like this: lol
I’m not being picky. Looking at foreign standards, one can see that they are very rigorous, with everything having a basis. Based on what’s actually done, this will basically never be an integer
There’s no issue with the centerline positioning; the dimensional errors will all be taken into account when the basic conditions are specified later
For the basic requirements, do you use an integer as the central elevation?
To determine the civil engineering requirements, subtract the distance from the centerline elevation to the equipment support point
So it’s lifted according to the elevation of the support point, right?
The base elevation must be an integer, which makes construction easier
In civil engineering, integers are not necessary; errors in pouring concrete foundations are within acceptable tolerances, so there is no need to insist on using integer values for such foundations. Eventually, when installing equipment, shims are used to adjust the elevation level
Will you include the wall thickness of the tank body when designing this centerline elevation?
What is the relationship between the center elevation and whether a wall thickness is included? It can be deducted when the civil engineering costs are calculated in the end