Eccentrically Loaded Monolithic Foundations
Eccentrically Loaded Monolithic Foundations
(OP)
I am looking for information on the design of eccentrically loaded monolithic foundations (footer and slab poured at the same time). In Florida, such foundations are utilized commonly for residential as well as light commercial and pre-engineered buildings.
In particular, is the "keep resultant in the center third" valid?
In particular, is the "keep resultant in the center third" valid?






RE: Eccentrically Loaded Monolithic Foundations
RE: Eccentrically Loaded Monolithic Foundations
RE: Eccentrically Loaded Monolithic Foundations
RE: Eccentrically Loaded Monolithic Foundations
Since 1984, I have routinely used utility-grade earth anchors to resist uplift in pre-engineered buildings (the anchors and installation are more economical than concrete). Issues you have to be concerned about is (of course) corrision and water table elevation relative to the anchor contact zone. I also think summing moments to equal zero is not neccessary as long as the resisting moment is greater than the uplift moment. And, if the column pad is indeed monolithic with the slab, what affect does this have?
Ucfse, where in Florida do you do these stemwall foundations (Orlando, CF)? This type of foundation is not competitive with monolithic construction on the East coast. And the 1.5 FS has been replaced with the 0.6DL + WL load combination (or 1.67 FS) in both ASCE 7 and FBC.
Come on Structural/Geotechnical Dudes/Dudettes, post some comments!
RE: Eccentrically Loaded Monolithic Foundations
What kind of earth anchors do you use? Is there a web site for them? That sounds like a really good idea, I haven't heard that one yet.
RE: Eccentrically Loaded Monolithic Foundations
1. This link to USACOE manual "Concrete Floor Slabs on Grade Subjected to Heavy Loads", chapter 3 has the information that you need.
http://ww
2. I use and old DOS program that is very wonderful to design the monolithic footing loaded with walls. It has great way to check the soil bearing pressure, steel required for the footing and also spits out bar requirement that projects from the footing into the slab to prevent the weak plane between footing and slab from cracking.
Regards
Lutfi
www.cdeco.com
RE: Eccentrically Loaded Monolithic Foundations
RE: Eccentrically Loaded Monolithic Foundations
Lutfi
www.cdeco.com