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  2. Stand-alone power system - Wikipedia

    en.wikipedia.org/wiki/Stand-alone_power_system

    A typical stand-alone solar PV system at a sewage treatment plant in Santuari de Lluc, Spain. Stand-alone photovoltaic power systems are independent of the utility grid and may use solar panels only or may be used in conjunction with a diesel generator, a wind turbine or batteries. [1] [2]

  3. Pile driver - Wikipedia

    en.wikipedia.org/wiki/Pile_driver

    Tracked vehicle configured as a dedicated pile driver. A pile driver is a heavy-duty tool used to drive piles into soil to build piers, bridges, cofferdams, and other "pole" supported structures, and patterns of pilings as part of permanent deep foundations for buildings or other structures. Pilings may be made of wood, solid steel, or tubular ...

  4. Piling - Wikipedia

    en.wikipedia.org/wiki/Piling

    Foundations relying on driven piles often have groups of piles connected by a pile cap (a large concrete block into which the heads of the piles are embedded) to distribute loads that are greater than one pile can bear. Pile caps and isolated piles are typically connected with grade beams to tie the foundation elements together; lighter ...

  5. Rooftop solar power - Wikipedia

    en.wikipedia.org/wiki/Rooftop_solar_power

    Multiple solar panels strung together make up a solar array. Solar panels are generally protected by tempered glass and secured with an aluminum frame. [11] The front of a solar panel is very durable whereas the back of a panel is generally more vulnerable. Mounting clamps generally consist of aluminum brackets and stainless steel bolts that ...

  6. Screw piles - Wikipedia

    en.wikipedia.org/wiki/Screw_piles

    Large load capacity screw piles may have various components such as flat half helices, Bisalloy cutting tips and helices, cap plates or rebar interfaces for connection to various concrete or steel structures. Most industries use screw piling experts due to the cost efficiencies and, increasingly, the reduced environmental impact.

  7. Room and pillar mining - Wikipedia

    en.wikipedia.org/wiki/Room_and_pillar_mining

    First, the deposit is "undercut", where a slot is cut as deep as possible along the bottom of a section of ore. This undercut allows for a manageable pile of rock in later stages. The second step is the drilling and blasting of the section. This creates a pile of ore that is loaded and hauled out of the mine—the final step of the mining ...