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  2. Flat roof - Wikipedia

    en.wikipedia.org/wiki/Flat_roof

    A flat roof is a roof which is almost level in contrast to the many types of sloped roofs. The slope of a roof is properly known as its pitch and flat roofs have up to approximately 10°. [1] Flat roofs are an ancient form mostly used in arid climates and allow the roof space to be used as a living space or a living roof. Flat roofs, or "low ...

  3. Cost estimate - Wikipedia

    en.wikipedia.org/wiki/Cost_estimate

    A cost estimate is the approximation of the cost of a program, project, or operation. The cost estimate is the product of the cost estimating process. The cost estimate has a single total value and may have identifiable component values. A problem with a cost overrun can be avoided with a credible, reliable, and accurate cost estimate. A cost ...

  4. How Much Does a Roof Replacement Cost? 6 Ways To Make It ...

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  5. Rainflow-counting algorithm - Wikipedia

    en.wikipedia.org/wiki/Rainflow-counting_algorithm

    Both methods give an estimate of the fatigue life of a component. In cases of multiaxial loading, critical plane analysis can be used together with rainflow counting to identify the uniaxial history associated with the plane that maximizes damage. The algorithm was developed by Tatsuo Endo and M. Matsuishi in 1968. [3]

  6. Solar thermal energy - Wikipedia

    en.wikipedia.org/wiki/Solar_thermal_energy

    Roof-mounted close-coupled thermosiphon solar water heater. The first three units of Solnova in the foreground, with the two towers of the PS10 and PS20 solar power stations in the background. Solar thermal energy ( STE ) is a form of energy and a technology for harnessing solar energy to generate thermal energy for use in industry , and in the ...

  7. Church of St Mary Magdalene, Ditcheat - Wikipedia

    en.wikipedia.org/wiki/Church_of_St_Mary...

    The first stage, carried out from 1920 to 1924, involved recasting the church bells and restoring the tower and clock, at a cost of £1,731. The second stage, the largest and longest, involved the renewing of floors, seating, walls, heating apparatus, the restoration of the roofs of chancel, north transept and nave aisles, at a cost of £1,791.

  8. Angle of attack - Wikipedia

    en.wikipedia.org/wiki/Angle_of_attack

    Angle of attack of an airfoil. In fluid dynamics, angle of attack (AOA, α, or ) is the angle between a reference line on a body (often the chord line of an airfoil) and the vector representing the relative motion between the body and the fluid through which it is moving. [1]

  9. Public transport - Wikipedia

    en.wikipedia.org/wiki/Public_transport

    Public transport (also known as public transportation, public transit, mass transit, or simply transit) is a system of transport for passengers by group travel systems available for use by the general public unlike private transport, typically managed on a schedule, operated on established routes, and that may charge a posted fee for each trip.

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