Pad Footing Poured Off Center of point load

[CANeng11]

A pad footing on one of my projects was poured off center from the point load it was design to take (see attached picture). My first thought is to check the actual bearing capacity of the soil to see if it is higher than the assumed 2000 psf. If this doesn't help, what would be the best solution to support this load? Extend the footing to the right side(in the picture) by doweling into the existing pad?

 

[fattdad]

I'd talk to the structural engineer and find out how much of the design load is transient and live. Sometimes, we get the whole brunt of the loading to include all of the wind and snow loads. These can challenge bearing capacity, but not likely to lead to long-term settlements.

I'd also review the background geotechnical data (and/or call the geotechnical consultant) to evaluate the as-built footing's capacity to support this eccentric load. Whether it challenges the ultimate bearing pressure or not, there could be performance issues - i.e., settlement that need to be considered.

The best way to solve the problem? No clue. I don't know the geotechnical conditions at the site.

f-d

ípapß gordo ainÆt no madre flaca!

 

[Ron]

Unless you have rotation or an overturning moment on the footing, I doubt that's an issue. Check the footing as if the extra area on the left didn't exist and check the bearing pressure. Probably ok.

Did you check shear in the footing along the wall? Also not likely an issue, just check...particularly if the point load is high.

 

[Okiryu]

I would talk with the structural and geotechnical engineers. The footing appears to be about 5' and based on your assumed allowable bearing capacity of 2000 psf, it is lightly loaded. Perhaps they can allow for some "additional" capacity, lowering the FOS so the eccentric load can work for the current footing.