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  2. Geotechnical investigation - Wikipedia

    en.wikipedia.org/wiki/Geotechnical_investigation

    Shelby Tube Sampler. Utilized in the 'Standard Practice for Thin-Walled Tube Sampling of Soils for Geotechnical Purposes' (ASTM D 1587 [5]). This sampler consists of a thin-walled tube with a cutting edge at the toe. A sampler head attaches the tube to the drill rod, and contains a check valve and pressure vents.

  3. Standard penetration test - Wikipedia

    en.wikipedia.org/wiki/Standard_penetration_test

    The test uses a thick-walled sampling tube, with an outside diameter of 5.01 cm (2 in) and an inside diameter of 3.5 cm (1.375 in), and a length of at least 60 cm (24 in). The sampling tube is driven into the ground at the bottom of a borehole by blows from a hammer with a mass of 63.5 kg (140 lb) falling a distance of 75 cm (30 in). The sample ...

  4. Thin walled beams - Wikipedia

    en.wikipedia.org/wiki/Thin_walled_beams

    A thin walled beam is a type of beam (structure) that does not have a solid cross sectional area. The cross section of thin walled beams is made up from thin panels connected together. Typical closed sections include round, square, and rectangular tubes. Open sections include I-beams, T-beams, L-beams, and so on.

  5. Diffusive gradients in thin films - Wikipedia

    en.wikipedia.org/wiki/Diffusive_gradients_in...

    The diffusive gradients in thin films (DGT) technique is an environmental chemistry technique for the detection of elements and compounds in aqueous environments, including natural waters, [1] sediments [2] and soils. [3] It is well suited to in situ detection of bioavailable toxic trace metal contaminants.

  6. Jacketed fuel injection pipe - Wikipedia

    en.wikipedia.org/wiki/Jacketed_fuel_injection_pipe

    This jacket is usually metallic in construction and can either be a thin walled tube or convoluted hose. In the event of a burst in the injection pipe the leaking fuel will be collected by the jacket and piped away safely to an alarm device to notify operators of a potential problem.

  7. Australia to charge tech companies for news content if they ...

    www.aol.com/news/australia-charge-tech-companies...

    SYDNEY (Reuters) -Australia's centre-left government said on Thursday it planned new rules that would charge big tech firms millions of dollars if they did not pay Australian media companies for ...

  8. Texans never trail while handing Cowboys 5th straight loss, 34-10

    www.aol.com/texans-never-trail-while-handing...

    Derek Barnett forced the first fumble and returned the second for a touchdown on the definitive defensive play of the game for the Houston Texans. Joe Mixon did his thing, and C.J. Stroud didn’t ...

  9. Radial stress - Wikipedia

    en.wikipedia.org/wiki/Radial_stress

    For cylindrical pressure vessels, the normal loads on a wall element are longitudinal stress, circumferential (hoop) stress and radial stress. The radial stress for a thick-walled cylinder is equal and opposite to the gauge pressure on the inside surface, and zero on the outside surface. The circumferential stress and longitudinal stresses are ...

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