Sonotube Problem
Sonotube Problem
(OP)
I trying to get clear direction on how to solve a sonotube problem.
I have a 12" diameter sonotube 2'6" tall (2" will be buried).
3" CLR with a W4x4 welded wire fabric.
The sonotube will be resisting a W6x16 with 9000lbs
I have assumed the following:
weight of soil =120lb/ft^3
weight of concrete = 150 lb/ft^3
allowable bearing capacity = 3000 lb/ft^2
f'c = 3000psi
Is the sonotube strong enough to support the load?
I do pipeline work so this is a little different. Any help is appreciated!
Thanks in advance!
I have a 12" diameter sonotube 2'6" tall (2" will be buried).
3" CLR with a W4x4 welded wire fabric.
The sonotube will be resisting a W6x16 with 9000lbs
I have assumed the following:
weight of soil =120lb/ft^3
weight of concrete = 150 lb/ft^3
allowable bearing capacity = 3000 lb/ft^2
f'c = 3000psi
Is the sonotube strong enough to support the load?
I do pipeline work so this is a little different. Any help is appreciated!
Thanks in advance!






RE: Sonotube Problem
RE: Sonotube Problem
Uplift?
12" diameter Sonotube, 3" clear to WWF means the WWF is rolled into a 6" diameter tube?
Anchor bolts? Are they embedded within the confines of the WWF?
RE: Sonotube Problem
If the sonotube is filled with concrete, the axial stress is 9000/113 = 80 psi which is a trivial load for concrete so a concrete filled sonotube can easily carry the load.
If the concrete bears directly on the soil, the bearing pressure will be 11,500 psf which is substantially more than your assumed bearing pressure of 3,000 psf so the soil cannot carry the load.
Perhaps you should try a different approach.
BA
RE: Sonotube Problem
The final concrete filled sonotube column needs to bear on a minimum 2'-0" X 12" thick square spread footing.
Mike McCann
MMC Engineering
RE: Sonotube Problem
You could use a 24" drilled in pier finished with a 12" sonotube formed top.
Michael.
"Science adjusts its views based on what's observed. Faith is the denial of observation so that belief can be preserved." ~ Tim Minchin
RE: Sonotube Problem
Sonotube is a cardboard form for circular concrete columns. I wouldn't design or use it for anything else but that.
RE: Sonotube Problem