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Recent content by L0k

  1. L0k

    "Punch sampler" or "Punch boring"

    they want to know the subsoil by drilling
  2. L0k

    Swell Vs Heave

    Agreed with the above comments as my understanding are: Heave is happening due to the external loading, say you place an embankment you will get an amount of heaving. Swell is happening due to the inner substances influencing the soil grain behaviour especially in OCC soils.
  3. L0k

    Piles on Organic Silty Sand

    The pile will rely on end bearing plus the skin of non organic sandy layer, disregard the organic loose silty sand skin friction. A corrosion paint shall be applied on the steel pile section to protect corrosion at the 20 feet of organic silty sand layer. Bored pile is not recommended unless a...
  4. L0k

    Vibrating wire piezometer dry

    Place the piezometer in the water tank covered by geotextile and sandy gravel to avoid clogging.
  5. L0k

    Rule of Thumb for Mobilizing Full Capacity During PDA Testing?

    Thanks, MTNClimber Based on your data I calculated the ultimate pile capacity are 640kips and 740kips for HP12x74 and HP14x89 respectively. I assumed the rebound value 0.6" and the hammer efficiency is 85%
  6. L0k

    Rule of Thumb for Mobilizing Full Capacity During PDA Testing?

    Hi MTNClimber, I am interested to your experience in PDA & static loading test. Can you inform us some information on the static load tested piles such as: the hammer weight, falling height, final set & rebound value?
  7. L0k

    Soil test calculation.. Part

    That is very simple, Karegowd. It needs weights. - place the proving ring in the flat bench - place the weight load on top of the proving ring & read the dial - do the above step several times up to the maximum proving ring capacity, but not to exceed it. - draw the curve loads vs dial readings...
  8. L0k

    Executing a borehole adjacent to Bored pile

    If the bored pile is concreted, 1 m away is a fair distance to do a borehole. A temporary casing is a must in a silty SAND layer to avoid caving in. Casing installation should be pushed and no allowance for vibration that creating a loose sand and consume a lot of concrete.
  9. L0k

    Settlement calculation for strip footing

    Immediate settlement formula is based on the elastic condition and one of them was given by Schmertmann. This may be an option to consider.
  10. L0k

    Gabion for stream protection

    Thanks dik for the practical solution. Thanks avscorreia for the excellent Links.
  11. L0k

    Gabion for stream protection

    Hi... could you help me to give a simple design for a gabion wall to protect the river bank? how to calculate the hydraulic force against the gabion to include in the stability analysis? Other issues are to increase bearing capacity and secondly to protect the footing base against scouring. Thanks
  12. L0k

    Tension Pile Load Test

    mbilal89, I think your testing is against the ASTM recommendations that the reference beams shall be supported at a clear distance of at least 5 times the test pile diameter. The picture shows that the supported reference beams are inside the cracking zone area. So the maximum displacement of...
  13. L0k

    Asking for recommendation for foundation design

    I prefer to install 14m long wickdrain or sanddrain then preloading.
  14. L0k

    Overloading existing piles

    Hi Okiryu In my gut feeling with additional 20%load will give a FOS 2.5. In the existing building the piles had been no excess pore pressure anymore, it means the strength is higher (x%) than the strength during installment.
  15. L0k

    Calculation for Driven Pile

    Hi Hamza In finding the pile capacity of a driven pile, I use a dynamic formula i.e. Hiley formula, so you have to know several parameter such as: the hammer weight, falling height, hammer efficiency, setting and rebound value. It will be useful if you can conduct a pile loading test.
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