Grade Beam Supporting Pier

otto_eng · Jul 6, 2017

Hi,

I'm an EIT working at a small consulting office. I'm trying to design footings for columns of a residential building. This might be a silly solution but I'm trying to decrease the size of a footing by adding a grade beam(more like a column in this case) between piers that are located on the same y axis. Since there's an eccentricity, the length of the footing has to be really big considering the axial load as 40 kips. I attached my equation. I'd be glad if I can get any feedback.

Thank you,

KootK · Jul 6, 2017

Sure, solutions of that sort or common. Lots of property line basement walls have a similar condition and frequently the piers are omitted.

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.

WARose · Jul 6, 2017

It's a lot more expensive (per cubic yard of concrete) to form grade beams than footings. Unless we are talking the grade beams saving a lot of cubic yardage of concrete......I'd just stick with footings.

KootK · Jul 6, 2017

I could use a plan view sketch of this thing. Or elevation.

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.

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Grade Beam Supporting Pier

otto_eng

Civil/Environmental

KootK

Structural

WARose

Structural

KootK

Structural

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