Thanks bridgebuster.
I ended up with a 10'x10'x18" thick slab based on designing it as a beam.
The isolated squre footing check passsed without difficulty for above slab (beam design governs)
Then I checked the slab on grade design for heavy lift truck loading using COE curves.
I am now going...
The detail I am referrring to.
How do I estimate the slab dimension and thickness required?
Assuming the wheel load as a column load, I can design the slab as a isolated footing?
http://files.engineering.com/getfile.aspx?folder=c8fd2764-6024-4240-8ad2-b78647418254&file=Reference_detail.pdf
Bridgebuster:
Load is 40 kips wheel load not 215. The detail that I saw is designed for 215 kips, with a 12x12, 30" thick.
I am trying to find what slab dimension (LXBXh)I need to protect the 34"x30" CB from 40 kip wheel load.
See attached...
Bridgebuster:
No, the slab is going to be much larger. That is the intent for top slab as I said in my first post.I looked at a previous rehab detail. They are using 12'X12' slab 30" thick over a 72" diameter Manhole. Their loads are about 215 kip per wheel, much higher then what I have (40 kip...
Thanks Bridgebuster for the response. I have To determine the top slab dimension as well. How do yu base that upon? Do you find the influence of a point load beyond which there will be no effect on the CB?
Catch basin is 10' deep (total height) with a top metal frame that I am planning to replace with a stronger one as part of rehab.
We will be raising the catch basin up.
I have several 30" x 34" (5" wall thickness) precast catch basin in a parking lot.
Owner wants to use the parking lot for heavier loads (Wheel load = 40 kips)
I would like to know -
- How to increase capacity of existing catch basin to take additional wheel loads without digging into the...
