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Recent content by clayR

  1. clayR

    Rock Dowels vs. Tensioned Rock Ancors for Uplift

    Suggest you look at PTI recommendations for pretensioned rock and soil anchors. It will answer most of your questions for both active or passive anchors. General Rules Drill hole size for resin grout is limited to something slightly larger than the bar. Say 1.25"-1.5" hole for 1" or #8 bar...
  2. clayR

    Rockfill Dam and Anchors

    How would you classify the rock fill? Two methods to consider 1) mass stabilization of the upper 3 m of rock fill with grout. 2) Construct anchored/grouted columns with mass sufficent to resist uplift. Both methods will require special drilling techniques and the ability to control the lateral...
  3. clayR

    Surface scaling in very small areas on concrete slab

    JAE and Ron, Is it possible that the evaporation rate exceeded the available water as a result of the calcium chloride? Calcium Chloride will reduce bleed by decreasing the initail set, at least this has been my experience with cement pastes....your thoughts?
  4. clayR

    Soil hydraulic fracturing

    Geotechgal, Interesting thread. What did you determine, and what became of the issue?
  5. clayR

    Artificial reefs to create surf

    Dave, I like your grouted rip-rap approach, and along those lines could it be possible to use highway barriers as forms for the rip-rap. Perhaps the barriers could be tied together with steel brackets spaced at the desired width? The space between the barrier could then backfilled with rip-rap...
  6. clayR

    Uretek Floor Lifting and Deep Injection Technology

    Hello, I have never used Uretek products or service, and I never will. The product or the application is protected under law, and you need to be licensed installer. Uretek is currently being specified by two or three state DOT's for pavement undersealing. (Could be more) It may function as...
  7. clayR

    alternative earth anchors

    Hi Samee The 10 K should be no problem, but then you dont know what your anchoring into. Where is Rock? Is there cobble, boulder or obstructions that would not allow you to drive the anchor. How do you propose to resist the 3 K side load with a manta ray? I think you may have the cart in...
  8. clayR

    Drainage for Tabgent Caisson Wall

    Hello, Depending on the soil type, horizontal drilled in drains are common, say spaced 6' horizontal by 20'-30'long, say 1-1/2" perforated pvc in a sock. Also along Focht3 lines, going from tangent to closely spaced pile could be easier and cheaper. A slightly different twist could be drain...
  9. clayR

    Excavation in existing crawl space

    Hi all, The issue here is no soil study or design! I wont even comment on the 1:1 layback slope. What slope is safe with the given surcharge? It could only be a guess. As stated by others you need help. Do not proceed without engineering.
  10. clayR

    Bearing Stress between Pile and Pile Cap

    Steve. I would not even consider load transfer based on embedment length of steel pipe, although you might consider using nelson studs. This is cheap and fast! but you still got to keep the conc. out the pipe. As PEinc. points out, the pile will need to be capped with something. If you use...
  11. clayR

    stabilization of gravity retaining wall

    How could you possibly design for an unknown increased height? You could treat the stone as a temporary facing, install permanent nails and build a permanent shotcrete facing. Carve the shotcrete to look like the existing rock wall.
  12. clayR

    light concrete with embedded eps beads

    Uwe, Cannot comment on eps concrete, but I believe it would come under the heading of light wt aggregate concrete, which is common. I found your comments on Lime and silica interesting. What you discribe is called a pozzalonic reaction. Here, the function of the lime is to increase the pH for...
  13. clayR

    Conc. Wall on Soldier Pile W/ Tiebacks

    Sorry, I missed your last post, sounds like you got a handle on it.
  14. clayR

    Conc. Wall on Soldier Pile W/ Tiebacks

    Does anyone have a recommendation for a tieback contractor in NE Texas that I can give to the contractor I am working with so that he can find out more about using tiebacks. Please provide contact information.
  15. clayR

    Conc. Wall on Soldier Pile W/ Tiebacks

    If the existing foundations are at least 50'away, your options have increased. I still do not know about overhead restriction? Without knowing more about what you are looking at, my first choices would be a soil nail wall.
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