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  • Users: qhtony
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  1. qhtony

    Packer Test Calculation

    Hi guys, I was required to carry out some packer test in the field recently and just wondering if anyone has a program/excel spreadsheet handy to interpret/compute the data?
  2. qhtony

    Estimate of Drained Young's Modulus E' of Clay

    Hi Guys, Got a problem that has annoyed me for a while. I understand drained Young's Modulus E' of clay can be obtained from Oedometer consolidation test in the Lab; and there are also many published correlations between CPT qc, relative density and E' for SAND. However, I was wondering if...
  3. qhtony

    Staged Construction of Embankment

    Hi guys, recently having a problem with staged constructions of high fill embankment. The embankment constructions were done in 2 stages to allow alternating traffic (i.e. stage 1 embankment constructed on one half of the road and then stage 2 on the other half of the road, following the...
  4. qhtony

    Estimating Eu using Su for clay?

    Hi guys, I have been scratching my head off trying to find out the relationship between Eu (undrained Elasticity Modulus of soil) and Su (undrained shear strength of clay). However, literatures do not give a straight forward relationship between these two. Most of them are Eu=K*Su, but the K...
  5. qhtony

    Gravity base foundation for offshore structure

    Just wondering if anyone here knows any good reference books or papers (ideally online resources) for the gravity base foundation design for offshore structures? The vertical support is relatively easy to calculate using typical shallow foundation design principles, but offshore gravity base...
  6. qhtony

    Surchange required for low embankment ?

    Hi guys, have a problem recently in relation to a low embankment (~2m in height) road construction on highly plastic soft peaty clay (3m thickness). As the 2m fill will only induce less than 40Kpa on the existing road, and the allowable settlement is 20mm, is there a need to surcharge the peaty...
  7. qhtony

    Historical aerial photos and geological map

    Hi guys, I've got a desktop study of a land slip site (500m x500m) needs to be carried out but with very limited information available (Client acknowledged the limitations), not even a site inspection or any tests can be made. The info includes: 1. known landslides in the past 50 years 2...
  8. qhtony

    Geotechnical Interpretative Report

    Hi guys, I was recently required to produce a geotech interpretative report on a small scale road widening (about 2km) and interchange upgrade (roundabout upgrade to signalized intersection) project. The road is in an urban area and is slightly on fill (max 2m). Lab testing has been done to the...
  9. qhtony

    Standpipe Installation after borehole drilling

    Hi guys... I've encountered a situation that I finished drilling a borehole to 15m and the driller started backfilling the borehole with dirts/soil coming out of the hole and some sand. As soon as he finished backfilled the hole, I realised that I would still need to install a standpipe to do...
  10. qhtony

    Noise Attenuation Measures during Pile Driving

    Hi guys...I will be having quite a lot of pile driving (most likely using drop hammers on RC piles) in a residential area in the next couple of months. I'm wondering what are the "practical" measures that you guys would use or used in the past during pile driving to minimize the noise impact...
  11. qhtony

    Estimating Settlement for Driven Piles

    Hello, everyone... This is my first time posting a thread and my question may look a bit silly. I'm a graduate engineer and recently I have been assigned to a bridge foundation (driven piles) design work. Basically what my colleagues suggested was to use the SPT-N values to calculate the side...

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