XR250
Structural
- Jan 30, 2013
- 5,840
In our area, crappy soil is common so digging down 5 to 6 ft for a strip or spread footing happens alot.
Most geotechs I encounter just tell the builder to fill the hole with washed stone and then pour the concrete on top of that.
How does that actually work? Wouldn't the excavation walls have to have sufficient strength be able to keep the gravel "column" from spreading out? How do they know that?
Thanks
Most geotechs I encounter just tell the builder to fill the hole with washed stone and then pour the concrete on top of that.
How does that actually work? Wouldn't the excavation walls have to have sufficient strength be able to keep the gravel "column" from spreading out? How do they know that?
Thanks