Circular Tank - Shear Transfer at Wall/Slab Interface
Circular Tank - Shear Transfer at Wall/Slab Interface
(OP)
I know that this has been explained in previous posts, but I still have some confusion. In designing a circular RC tank, using the PCA document, you get the shear/foot at the base of the wall from Tbl. A-12. You then transfer this shear to the slab via dowels. You then must account for this shear in the slab by providing ring reinforcement in the slab in the vicinity of the wall.
My question concerns the determination of the ring reinforcement that is needed. One post that I read indicated that you take the shear/foot * pi * radius to get the value for the amount of shear that needs to be resisted by the ring reinforcement. Could someone explain the development of that equation.
Thanks
My question concerns the determination of the ring reinforcement that is needed. One post that I read indicated that you take the shear/foot * pi * radius to get the value for the amount of shear that needs to be resisted by the ring reinforcement. Could someone explain the development of that equation.
Thanks






RE: Circular Tank - Shear Transfer at Wall/Slab Interface
Michael.
Timing has a lot to do with the outcome of a rain dance.
RE: Circular Tank - Shear Transfer at Wall/Slab Interface
RE: Circular Tank - Shear Transfer at Wall/Slab Interface
RE: Circular Tank - Shear Transfer at Wall/Slab Interface
RE: Circular Tank - Shear Transfer at Wall/Slab Interface
RE: Circular Tank - Shear Transfer at Wall/Slab Interface
RE: Circular Tank - Shear Transfer at Wall/Slab Interface
Michael.
Timing has a lot to do with the outcome of a rain dance.
RE: Circular Tank - Shear Transfer at Wall/Slab Interface
RE: Circular Tank - Shear Transfer at Wall/Slab Interface
Hoop stress.
Michael.
Timing has a lot to do with the outcome of a rain dance.
RE: Circular Tank - Shear Transfer at Wall/Slab Interface
That assumes no radial reaction at the bottom slab. If the walls are prevented from straining elastically by ties to the base slab or rubber pads at the base of the walls, then the ring tension in the vicinity of the base slab is reduced by an amount which depends on the stiffness of the slab and wall or the properties of the rubber pads. It becomes a problem of strain compatibility.
BA
RE: Circular Tank - Shear Transfer at Wall/Slab Interface
RE: Circular Tank - Shear Transfer at Wall/Slab Interface
For an unit element (cubical) subjected to surface pressure, there are out of plane shears on all 4 sides to resist the force resulted from the pressure.
If this is the case, I think it is wrong. Without concentrate force, a pressure vessel will experience tensile/compressive stress but shear. Or, I may have missed the fundamental.
RE: Circular Tank - Shear Transfer at Wall/Slab Interface
When you add up the components of those outward forces, in the same direction, the result looks just like the hoop stress diagram I posted, above.
cntw1953, this is the shear between the cylinder wall and the foundation.
Michael.
Timing has a lot to do with the outcome of a rain dance.
RE: Circular Tank - Shear Transfer at Wall/Slab Interface
RE: Circular Tank - Shear Transfer at Wall/Slab Interface