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  2. Multiview orthographic projection - Wikipedia

    en.wikipedia.org/wiki/Multiview_orthographic...

    An elevation is a common method of depicting the external configuration and detailing of a 3-dimensional object in two dimensions. Building façades are shown as elevations in architectural drawings and technical drawings. Elevations are the most common orthographic projection for conveying the appearance of a building from the exterior.

  3. Medium-density fibreboard - Wikipedia

    en.wikipedia.org/wiki/Medium-density_fibreboard

    MDF is typically made up of 82% wood fibre, 9% urea-formaldehyde resin glue, 8% water, and 1% paraffin wax. [4] The density is typically between 500 and 1,000 kg/m 3 (31 and 62 lb/cu ft). [ 5 ] The range of density and classification as light-, standard-, or high-density board is a misnomer and confusing.

  4. 3D projection - Wikipedia

    en.wikipedia.org/wiki/3D_projection

    A 3D projection (or graphical projection) is a design technique used to display a three-dimensional (3D) object on a two-dimensional (2D) surface. These projections rely on visual perspective and aspect analysis to project a complex object for viewing capability on a simpler plane.

  5. R-tree - Wikipedia

    en.wikipedia.org/wiki/R-tree

    The R-tree was proposed by Antonin Guttman in 1984 [2] and has found significant use in both theoretical and applied contexts. [3] A common real-world usage for an R-tree might be to store spatial objects such as restaurant locations or the polygons that typical maps are made of: streets, buildings, outlines of lakes, coastlines, etc. and then ...

  6. Building (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Building_(mathematics)

    The Bruhat–Tits tree for the 2-adic Lie group SL(2,Q 2). The notion of a building was invented by Jacques Tits as a means of describing simple algebraic groups over an arbitrary field. Tits demonstrated how to every such group G one can associate a simplicial complex Δ = Δ(G) with an action of G, called the spherical building of G.

  7. 3D floor plan - Wikipedia

    en.wikipedia.org/wiki/3D_floor_plan

    A 3D floor plan, or 3D floorplan, is a virtual model of a building floor plan, depicted from a birds eye view, utilized within the building industry to better convey architectural plans. Usually built to scale, a 3D floor plan must include walls and a floor and typically includes exterior wall fenestrations , windows, and doorways.

  8. Constructive solid geometry - Wikipedia

    en.wikipedia.org/wiki/Constructive_solid_geometry

    Deductive methods solve this problem by building a set of half-spaces that describe the interior of the geometry. These half-spaces are used to describe primitives that can be combined to get the final model. [7] Another approach decouples the detection of primitive shapes and the computation of the CSG tree that defines the final model.

  9. Construction 3D printing - Wikipedia

    en.wikipedia.org/wiki/Construction_3D_printing

    Another method is the tangential continuity method which produces 3-dimensional building paths with locally varying thicknesses. This method results in creating constant contact surfaces between two layers, therefore, the geometrical gaps between two layers which often limits the 3D printing process will be avoided.