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  2. Surface roughness - Wikipedia

    en.wikipedia.org/wiki/Surface_roughness

    On rough soil surfaces, the action of rainsplash detachment tends to smoothen the edges of soil surface roughness, leading to an overall decrease in RR. However, a recent study which examined the response of smooth soil surfaces on rainfall showed that RR can considerably increase for low initial microroughness length scales in the order of 0 ...

  3. Real versus nominal value (philosophy) - Wikipedia

    en.wikipedia.org/wiki/Real_versus_nominal_value...

    The metric size is larger than the imperial size. For example, both 1 ⁄ 2 inch and 15 millimetres (0.59 in) copper pipe is actually the same pipe which has a nominal internal diameter of 1 ⁄ 2 an inch and a nominal external diameter of 15 millimetres [ 6 ] (diameter is always internal in the imperial measurement system and always external ...

  4. Framing (construction) - Wikipedia

    en.wikipedia.org/wiki/Framing_(construction)

    Wall framing in house construction includes the vertical and horizontal members of exterior walls and interior partitions, both of bearing walls and non-bearing walls. . These stick members, referred to as studs, wall plates and lintels (sometimes called headers), serve as a nailing base for all covering material and support the upper floor platforms, which provide the lateral strength along a

  5. Lumber - Wikipedia

    en.wikipedia.org/wiki/Lumber

    In 1961, at a meeting in Scottsdale, Arizona, the Committee on Grade Simplification and Standardization agreed to what is now the current U.S. standard: in part, the dressed size of a 1-inch (nominal) board was fixed at 3 ⁄ 4 inch; while the dressed size of 2 inch (nominal) lumber was reduced from 1 + 5 ⁄ 8 inch to the current 1 + 1 ⁄ 2 inch.

  6. Aperture - Wikipedia

    en.wikipedia.org/wiki/Aperture

    The specifications for a given lens typically include the maximum and minimum aperture (opening) sizes, for example, f /0.95 – f /22. In this case, f /0.95 is currently the maximum aperture (the widest opening on a full-frame format for practical use [8]), and f /22 is the minimum aperture (the smallest opening). The maximum aperture tends to ...

  7. Architectural drawing - Wikipedia

    en.wikipedia.org/wiki/Architectural_drawing

    An architectural drawing or architect's drawing is a technical drawing of a building (or building project) that falls within the definition of architecture.Architectural drawings are used by architects and others for a number of purposes: to develop a design idea into a coherent proposal, to communicate ideas and concepts, to convince clients of the merits of a design, to assist a building ...

  8. Shear wall - Wikipedia

    en.wikipedia.org/wiki/Shear_wall

    Slip forming is method of concrete placement whereby a moving form is used to create a continuous wall extrusion. This method is very efficient for well-suited structures, such as flanged and core wall systems. A very accurate wall thickness can be achieved but the surface is rough because of the abrasion of the form on the walls.

  9. Crack tip opening displacement - Wikipedia

    en.wikipedia.org/wiki/Crack_tip_opening_displacement

    Crack tip opening displacement (CTOD) or is the distance between the opposite faces of a crack tip at the 90° intercept position. The position behind the crack tip at which the distance is measured is arbitrary but commonly used is the point where two 45° lines, starting at the crack tip, intersect the crack faces. [ 1 ]