Trench Footing
Trench Footing
(OP)
Hey. I have a PEMB foundation design, and the client want to use "trench" footings. Basically, they want mass concrete for the foundation walls and footings, no piers. The client is a general contractor and it's their PEMB building, so I'm not going to argue with them. I'm curious how anyone would approach the reinforcing? Typical PEMB loads, the footings driven mostly by uplift, the wall footings wouldn't have much load. I don't really have a basis for the reinforcing, as these could likely function without it. Any thoughts are appreciated.






RE: Trench Footing
As for any flexural reinforcing, calculate the soil pressure below the footing (or above the footing in the case of uplift) and design as a grade beam spanning between columns.
RE: Trench Footing
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.