Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations cowski on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  1. MTNClimber

    Deep french drain + sump

    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...
  2. MTNClimber

    Field exploration elevation - how do you obtain it?

    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...
  3. MTNClimber

    Field exploration elevation - how do you obtain it?

    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...
  4. MTNClimber

    How to determine if soil is expansive?

    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...
  5. MTNClimber

    How to determine if soil is expansive?

    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...
  6. MTNClimber

    Increasing in Bearing Capacity with Depth and Width (Cookies Cutter Geotech Report Recommendations)

    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.
  7. MTNClimber

    Shallow Embedment Rock Anchors

    Seems like you’re in the right ball park with those numbers. Just make sure you have some good rock core information in your borings.
  8. MTNClimber

    Shallow Embedment Rock Anchors

    What are your anchor loads for the 15 ft spacing?
  9. MTNClimber

    Withdrawn ASTM Standards

    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...
  10. MTNClimber

    Withdrawn ASTM Standards

    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...
  11. MTNClimber

    Site Class B

    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.
  12. MTNClimber

    RSO - Safety and Storage

    Put them in a locked charging cabinet inside a locked closet. If needed build a closet around the cabinet. Or make someone else the RSO.
  13. MTNClimber

    Regarding soil classification

    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.
  14. MTNClimber

    Regarding soil classification

    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.
  15. MTNClimber

    Foamed Glass Aggregate as foundation subbase

    I would recommend contacting the manufacturer with your question. They have lab testing and examples of projects they have used it on.
  16. MTNClimber

    Settlement vs Foundation Size

    I just came across this in UFC 3-220-10 (DM7.1):
  17. MTNClimber

    Settlement vs Foundation Size

    CarlB: you’re correct. I’m unfamiliar with this method, but I should have noticed that. Either way, the theory is still the same.
  18. MTNClimber

    Settlement vs Foundation Size

    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.
  19. MTNClimber

    How do you quantify minor inclusions on the boring logs?

    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...
  20. MTNClimber

    compaction report and soil type

    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!

Part and Inventory Search

Back
Top