IGS specialises in, in situ testing and sampling. We don't do anything else. We have spent over 20 years field testing
equipment and refining methodologies to help provide high quality data to our clients
which has led us to become one of the best in the world at what we do.
TEST ANYTHING.....(almost). We have a wide range of in situ testing
services that vary from broad scale profiling tools, such as non-piezo CPT
cones; to the latest developed specialist 3MPa cones to measure extremely low
skin friction; to the latest high end, fully automated Medusa DMT that measures
in situ modulus and several other parameters.
We also have a wide range of in situ sampling
techniques, many of which have been developed in house, from our flagship best
quality fixed piston sampler - PPI, to disturbed bulk sediment samplers.
WE CAN SAMPLE ANYTHING.....(Almost). The majority of our testing and sampling
services are detailed here, however if you need something that is not mentioned
please contact us. Click on the links below for additional
information on each of our services.
We offer a range of Test Categories, from routine CPT & CPTu to special-type and quasi-research. We claim the most sensitive, accurate and defensible testing available.
Our most popular test type after CPTu. Quantitative modulus & strength profiling. The Medusa is cutting edge technology.
Shear wave velocity by the SCPTu method, and both shear wave and compression wave by high-tech Marchetti modules.
Direct-push Vane Shear Testing is “everyday stuff” for IGS. We typically use vane sizes ranging from 50x100mm to 100x200mm.
A penetrometer developed specifically for shear strength testing of soft to very soft clay. Can be “cycled” to test for residual shear strength.
PENCEL (2500 kPa)
, TEXAM (10,000 kPa), PROBEX (30,000 kPa)
With these three pressuremeters we can test materials ranging from soft clays to medium strength rock, in boreholes and (with the Pencel) also by direct-push.
Our flagship sampler. This takes 63 or 75mm diameter samples about 800mm long that are arguably as close to undisturbed as you can get by any means other than research-level block sampling. Used in very soft to firm cohesive soils; typically it is used for sampling for high quality lab. strength and compressibility testing.
Our Ranger & Vertek Samplers are floating piston devices that can take samples in almost any soil type. Diameters: 35mm, 46mm, 66mm. Samples can be tubed or bagged.
These samplers are used with 100% success to discretely sample “ooze”-like and liquid sediments and tailings materials. The Big Sucker takes two samples at once, 1m apart vertically.
Our vibracoring system is enhanced by using a floating piston to keep the tube closed during insertion then to help retain the sample by a positive suction on withdrawal.
Our “crudest” sampler. Window Samplers can be used to (a) take samples of coarse and gravelly material (eg rail ballast & subgrade), or (b) to pre-core through a stiff surface layer to allow other testing & sampling below. Telescoping design, 85mm and 95mm diameter.
Our BS Sampler is used to air lift “ooze-like” samples (eg semi-liquid tailings) from any specific depth. Very large bulk samples can be taken, that are not water-diluted.
IGS has well-developed techniques and systems for installing both Casegrande-type open-standpipes and vibrating wire piezometers (VWPs). Various sealing systems are used, depending on the conditions. This is "everyday business for IGS.
Keep up to date with our latest news and developments.