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  2. Attic - Wikipedia

    en.wikipedia.org/wiki/Attic

    Louvered attic vent in a gable. Modern building codes permit both vented and unvented attics in all climates, if a building is otherwise correctly constructed. [5] However, unoccupied attics should usually be ventilated [6] to reduce the accumulation of heat and moisture that contribute to mold growth and decay of wood rafters and ceiling ...

  3. Low-water crossing - Wikipedia

    en.wikipedia.org/wiki/Low-water_crossing

    Low-water crossing (vented ford) at Chew Stoke, Somerset, United Kingdom Roanoke River low water bridge, USA The drovers' road from Abergwesyn to Tregaron, Wales, United Kingdom, crosses the Afon Irfon via the Irish bridge at the foot of the Devil's Staircase Shared pedestrian/cycle way over the Yass River in Yass, New South Wales, Australia

  4. Drain-waste-vent system - Wikipedia

    en.wikipedia.org/wiki/Drain-waste-vent_system

    A sewer pipe is normally at neutral air pressure compared to the surrounding atmosphere.When a column of waste water flows through a pipe, it compresses air ahead of it in the system, creating a positive pressure that must be released so it does not push back on the waste stream and downstream traps, slow drainage, and induce potential clogs.

  5. List of commercially available roofing materials - Wikipedia

    en.wikipedia.org/wiki/List_of_commercially...

    Roofing material is the outermost layer on the roof of a building, sometimes self-supporting, but generally supported by an underlying structure. A building's roofing material provides shelter from the natural elements. The outer layer of a roof shows great variation dependent upon availability of material, and the nature of the supporting ...

  6. Is This Toxic Mold? How To Know If It's In Your House—And Why ...

    www.aol.com/toxic-mold-know-house-why-184500544.html

    Subsequent air and dust tests found Stachybotrys chartarum, or black mold, growing in her daughter’s wall and problems throughout the home with the roof's metal waterproofing elements. “I ...

  7. 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.

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