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  2. Pile driver - Wikipedia

    en.wikipedia.org/wiki/Pile_driver

    Vibratory pile hammers contain a system of counter-rotating eccentric weights, powered by hydraulic motors, and designed so that horizontal vibrations cancel out, while vertical vibrations are transmitted into the pile. The pile driving machine positioned over the pile with an excavator or crane, and is fastened to the pile by a clamp and/or ...

  3. Movax - Wikipedia

    en.wikipedia.org/wiki/Movax

    Movax is a developer and manufacturer of excavator-mounted, automatically controlled piling and foundation equipment and the inventor of the patented modular side grip technology. [1] The product range includes a selection of excavator-mounted accessories like side grip vibratory pile drivers ( SG ), impact-type piling hammers ( DH ), piling ...

  4. Deep foundation - Wikipedia

    en.wikipedia.org/wiki/Deep_foundation

    Sheet piling is a form of driven piling using thin interlocking sheets of steel to obtain a continuous barrier in the ground. The main application of sheet piles is in retaining walls and cofferdams erected to enable permanent works to proceed. Normally, vibrating hammer, t-crane and crawle drilling are used to establish sheet piles. [citation ...

  5. Junttan - Wikipedia

    en.wikipedia.org/wiki/Junttan

    The new HHK-S hydraulic hammer range was launched in 2001. A new drilling rig platform was launched in 2005. Junttan became a part of the PiloMac group in 2006. Launching Junttan's biggest hydraulic hammer, the HHK 25S, in 2007. Manufacturing the 1000th Hydraulic hammer in 2007. Manufacturing the 500th Piling rig in 2008.

  6. Hydraulic hammer - Wikipedia

    en.wikipedia.org/wiki/Hydraulic_hammer

    Hydraulic hammer may refer to: Breaker (hydraulic) , a powerful percussion hammer fitted to an excavator for demolishing hard structures Hydraulic hammer, a type of piling hammer

  7. Vibratory stress relief - Wikipedia

    en.wikipedia.org/wiki/Vibratory_stress_relief

    After peak growth and shifting have subsided, a Post-Treatment Scan is made (red). This data is superimposed on the original, green, Pre-Treatment Scan data, documenting the changes in resonance pattern. The stress relief treatment resulted in 47% growth of the original, large peak, while it shifted to the left 28-RPM (less than 0.75%).

  8. ‘Why we never got Ebola’ by Huffington Post

    testkitchen.huffingtonpost.com/ebola

    What one nurse learned about humanity amidst the Ebola epidemic

  9. Down-the-hole drill - Wikipedia

    en.wikipedia.org/wiki/Down-The-Hole_Drill

    There are three types of hammers, depending on the actuation fluid: Air hammers have first been developed to drill hard rock but are limited to shallow holes (< 200m); Water hammers have been developed by a swedish company called Wassara. [1] A lost water flow (between 55 and 744 L/min, depending on the hammer size) is necessary to actuate the ...