Designing Oblong/Racetrack Shaped Concrete Tanks
Designing Oblong/Racetrack Shaped Concrete Tanks
(OP)
I am somewhat familiar with designing concrete tanks based on the PCA design method for rectangular and circular tanks.
For tanks shaped like below, I am guessing you would use a combination of both methods? Not exactly sure how to approach this one.
For tanks shaped like below, I am guessing you would use a combination of both methods? Not exactly sure how to approach this one.

RE: Designing Oblong/Racetrack Shaped Concrete Tanks
Rather than think climate change and the corona virus as science, think of it as the wrath of God. Feel any better?
-Dik
RE: Designing Oblong/Racetrack Shaped Concrete Tanks
Since you didn't ask, I would throw away the PCA Book on rectangular tanks (not the one on Circular ones) and just use "Moments and Reactions for Rectangular Tanks" by the US Department of the Interior, Bureau of Reclamation. It's been out of print for about 40 years, but I've found it legally online.
RE: Designing Oblong/Racetrack Shaped Concrete Tanks
I have also dealt with similar case for some 30 yrs ago.. JedClampett 's approach conservatively O.K. I will suggest some relaxation,
-design for vertical bar assuming cantilever wall both circular and flat wall portions for separate loading cases exterior soil and hydrostatic,
- provide EJ at connections at connection circular to flat wall sections.
- design the horizontal bar for temperature and shrinkage and check for minimum code requirements for the flat walls,
- design the horizontal bar for circular section ; (hoop force (p*H/10)*D/2 + temperature and shrinkage ) and check for minimum code requirements
You may also FEM the system assuming rigid connection of wall to foundation slab and design for the effects.