Buried Tank

[ENGJP22]

Hi guys,
I have a buried concrete tank that has to be capable of resisting the load transfered
by a truck that could run over the top slab. I want to know what's the proper way to account the
wheel reaction of the truck on the slab. The top level of the slab is the same as the road level.

Thanks in advanced

 

[GeorgeTheCivilEngineer]

From memory a 100kN wheel load is what's in the Eurocode for local checks. Max 1.1MPa pressure (so a 300x300 wheel).

Check for bending and shear.

Check for surcharge on the tank walls.

Repeat with an axle in case that is more onerous.

Something like that.

 

[JedClampett]

I'm not sure what country you're in, but in the US, we have AASHTO (American Association of State Highway and Transportation Officials) which has extensive guidelines of wheel loads, slab designs, etc., mostly for bridges, but information that can also be used for buried tanks.
If you're not in the US, I'm sure it's fine, but you should probably use a local equivalent.

 

[DoubleStud]

Most designers will design it to AASHTO LRFD, even if it is not on a highway. If I am not mistaken the load factor is 1.67 with 1.3 impact factor if there is no soil cover. So it ends up being 2.17 live load factor.