You now have to direct the water collected in the underdrain to discharge somewhere else, hopefully downgradient of the house. It can connect to a storm sewer or daylight where erosion/scour can be limited or avoided. This could be a lot of water, so make sure to take that into account. It would...
Pretty much all survey-grade rovers are easy to use once they are set up. Someone unfamiliar with the process may need some help initially setting it up, but that’s what the distributor is for. Search for Emlid videos on YouTube and see if you’re interested in them. They also have the new RS3...
Does your state have a free RTK network? You can get a decent GIS-grade GPS unit for accurate x and y for $500 (Trimble Catalyst DA2 Receiver Kit). If you want accurate elevations too you can use one of the Emlid products. The Reach RX is only $2,800 with a pole. If your state doesn't have a...
More coffee -
Please elaborate. My understanding is that the Colorado/Denver swell test is very close to ASTM D4546.
The procedure in that video is just a way to understand if your soil is expansive and not a method used in my practice. I agree the way it was executed can be problematic, but...
Colorado firms use ASTM D4546, Standard Test Methods for One-Dimensional Swell or Collapse of Soils https://www.astm.org/d4546-21.html, to determine if a soil or bedrock sample is expansive.
The 1D Swell tests are typically performed on intact samples of soil collected from a California...
Not in the areas I have practiced (southern New England and Colorado).
We provide a net allowable bearing pressure for footings. We provide minimum footing dimensions and depth. The net allowable bearing pressure for footings less than three feet wide is reduced proportionately.
Developing your own is a pretty good idea if you bid out a lot of drilling work. There are plenty of other DOTs with "Technical Specifications for Subsurface Explorations" to help develop your own. Here's a rock core section that I've used in the past that doesn't have the ASTM call out. I'm not...
The few times we have to bid drilling projects, we include Technical Specifications describing the requirements for drilling (cased, mud rotary, etc), soil and bedrock sampling techniques, groundwater well installation, field vane shear tests, labeling and preservation of samples, ground...
My interpretation of ASCE 7 would be that you cannot assign the site Class B since it does not meet the requirements of 10 feet or less of soil below the foundation.
No offense dik. Just pointing out why there are geotechnical engineers on projects. It’s their job to help out the design team with questions like this.
Nayan - While everyone sharing their experience in this thread is nice, talk to the project's geotechnical engineer. The GC/SC soils in your area may act differently than the GC/SC soils in the areas of those who reply in this thread.
If it’s not apparent, Geotechguy’s answer applies to your second question. The smaller the footing while maintaining the same bearing pressure indicates a smaller force (load) on the footing. This means there will be less settlement.
This is when modified Burmister comes in handy. I know it's not used nearly as much as USCS, but it has its advantages.
and = 35%-50%
some = 20%-35%
little = 10%-20%
trace = 0%-10%
trace, little, or some (+) = on the higher end of trace, little, or some.
trace, little, or some (-) = on the...
No, that does not provide enough information on the expansion potential of the compacted soil. You would need to run laboratory testing on the soil to determine that. Talk to your favorite local geotech!
