Static Load Tests (SLT) of: foundation piles and pillars, diaphragm walls, anchors and soil nails
We carry out static tests in any possible configuration: vertical (compression and tension), lateral and raked piles load tests.
The tests are performed by applying a maintained load method or a CPR (Constant Rate of Penetration) type tests. Thanks to the application of an up-to-date apparatus, we have the capacity to carry out cyclic tests, e.g. to simulate loads in railway track or vehicle traffic environment.
Kentledge Static Load Tests - Due to high costs of handling and operating of hoisting equipment, kentledge load tests are performed exclusively in cases where there is no possibility to use anchor piles, or anchor pile capacity is insufficient. Kentledge is also often used to carry out zone load tests, e.g. in case of gravel columns or improved soils.
Static Load Tests with Anchor Piles - To carry our this type of test, extra-fine steel beams are required, hence their deformation under load is minimal. Threaded bars DYWIDAG Prestressing Steel THREADBAR® are applied as connecting members to join beams to anchor piles.
A wide range of our beams provides possibilities of test loading within a range of 100 kN up to 30 MN plus, using two/three/four/six/eight anchor piles arranged around the pile to be tested.
Static Load Testing Applying a Compound Method (anchor-kentledge) – it is a combination of the two methods described above.
Dynamic Load Tests (DLT) of foundation piles
Dynamic tests are a universally applied method to assess bearing capacity of foundation piles. Tests are relatively inexpensive and the time required for their preparation is quite short. Loading is generated by stroking the pile head with a hammer of the piling machine or with a steel pile driver (1%-5% of the load) lowered inertly from the height of 0.5m ÷ 3.0m. Logging of the stress wave moving along the pile is effected by an accelerometers and extensometers installed on the pile head, ca. two diameters from the stroke level.
Pile and diaphragm wall Integrity Testing (PIT / PET / CSL)
Sonic Echo Integrity Testing - The test is performed by application of the Pile Integrity Tester™ (PIT) or Pile Echo Tester (PET). The test belongs to the group of the 'Low Strain Dynamic Testing' and is intended to check the integrity of a pile by applying a slight stroke with a hammer on the pile head, hence generating a compression wave travelling along the shaft of the pile. A highly sensitive accelerometer placed on top of the pile records returning wave in a time function, i.e. according to the pile length.
Where any clear alteration is encountered, the wave is reflected and recorded prior to the recording of the signal stemming from the pile base. Due to this test, all the piles at the construction site can be checked quickly and efficiently, identifying their lengths, any necking of their diameters and/or cracks and even abrupt changes in geotechnic system of layers. Any potential deviations indicating pile structure-related problems are detected and analysed immediately. The test requires only a careful preparation of the pile head and ensuring a suitable access to the pile to be tested.
Cross-Hole Sonic Logging - The test utilizes a phenomenon of ultrasonic wave propagation in the pile material - concrete. Performance of the test requires embedding from one to several steel tubes during concreting the pile so as to enable insertion of two probes: a transmitter and a receiver. When four tubes are used, up to six profiles of the pile can be obtained.
The up-to-date software: Tomography 3D by the Piletest Com. Ltd. provides a three-dimensional picture of the pile shaft.
As you see, not much happened on site. The whole action took place 15m deep in water.
The team of divers set up for us the micropile tension test. Displacement we have monitored with use of vibration wire Geokon tensometric sensors, with which we have been equipped by SHM System company. The gauges can withstand even 170m water pressure. The acceptance tests on micropiles precede concreting of foundation slab and dewatering of excavation which is made in between the diaphragm walls. Micropiles have been installed as an anchorage of foundation slab.
We are proud to announce that it has been 10 years since our company started its operations on the Polish market. On this occasion, we would like to thank all our customers who during that time entrusted us to carry out research and all our trade partners who were supporting our activities for the past 10 years.
We are pleased to inform that PILETEST became one of the awarded projecting companies in the contest Modernization of the Year 2012 for designs of subways for pedestrians under 3 Maja and Piastowska streets in Bielsko-Biała.
The award ceremony was held on August 28th at the Royal Castle in Warsaw, accompanied by officials and dignitaries, as well as media representatives. We would like to thank for our success to the Investor MZD Bielsko-Biala, architect Krzysztof Strama and installations designers and general contractors of the objects.
See more on: www.modernizacja-roku.pl