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  2. List of This Old House episodes (seasons 11–20) - Wikipedia

    en.wikipedia.org/wiki/List_of_This_Old_House...

    Up on the roof, our master carpenter sees the hurricane tie-down system connecting the roof to the sidewalls, and roofer Jim Wilkinson and crew install copper valleys, treated red cedar shingles with a 30-year warrantee, and a three-dimensional nylon mesh underlayment that allows the shingles to "breathe" and dry more evenly.

  3. Multiway switching - Wikipedia

    en.wikipedia.org/wiki/Multiway_switching

    In contrast to a simple light switch, which is a single pole, single throw (SPST) switch, multiway switching uses switches with one or more additional contacts and two or more wires are run between the switches. When the load is controlled from only two points, single pole, double throw (SPDT) switches are used.

  4. Light switch - Wikipedia

    en.wikipedia.org/wiki/Light_switch

    Two light switches in one box. The switch on the right is a dimmer switch. The switch box is covered by a decorative plate. The first light switch employing "quick-break technology" was invented by John Henry Holmes in 1884 in the Shieldfield district of Newcastle upon Tyne. [1]

  5. List of roof shapes - Wikipedia

    en.wikipedia.org/wiki/List_of_roof_shapes

    Cross hipped: The result of joining two or more hip roof sections together, forming a T or L shape for the simplest forms, or any number of more complex shapes. Satari: A Swedish variant on the monitor roof; a double hip roof with a short vertical wall usually with small windows, popular from the 17th century on formal buildings. [citation ...

  6. Skylight - Wikipedia

    en.wikipedia.org/wiki/Skylight

    Solar tubes, sun tunnels, or tubular skylights consist of a roof-mounted fixed unit skylight element, condensing sunlight, distributed by a light conveying optic conduit to a light diffusing element. [3] Being small in diameter, they can be used for daylighting smaller spaces such as hallways, and bounce light in darker corners of spaces. TDDs ...

  7. Arcade (architecture) - Wikipedia

    en.wikipedia.org/wiki/Arcade_(architecture)

    He was referring to the grand shopping "arcades" that flourished across Europe during that period. A shopping arcade refers to a multiple-vendor space, operating under a covered roof. Typically, the roof was constructed of glass to allow for natural light and to reduce the need for candles or electric lighting. [8]

  8. Pull switch - Wikipedia

    en.wikipedia.org/wiki/Pull_switch

    The most common use of a pull switch is to operate a ceiling electric light.The ceiling fan and mechanical wall fans are also appliances often operated by pull switches. . Pull switches may be either two-position (open or closed) or multi-position (allowing for different fan speeds or levels of illuminati

  9. Roof window - Wikipedia

    en.wikipedia.org/wiki/Roof_window

    A roof window is an outward opening window that is incorporated as part of the design of a roof. Often confused with a skylight , a roof window differs in a few basic ways. [ citation needed ] A roof window is often a good option when there is a desire to allow both light and fresh air into the space.