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  2. Everyday Mathematics - Wikipedia

    en.wikipedia.org/wiki/Everyday_Mathematics

    Everyday Mathematics curriculum was developed by the University of Chicago School Math Project (or UCSMP ) [1] which was founded in 1983. Work on it started in the summer of 1985. The 1st edition was released in 1998 and the 2nd in 2002. A third edition was released in 2007 and a fourth in 2014-2015. [2] A new one was released in 2020, dropping ...

  3. Drainage equation - Wikipedia

    en.wikipedia.org/wiki/Drainage_equation

    the permissible long term average depth of the water table (Dw) on the basis of agricultural drainage criteria; the soil's hydraulic conductivity (Ka and Kb) by measurements; the depth of the bottom of the aquifer (Di) the design drain spacing (L) can be found from the equation in dependence of the drain depth (Dd) and drain radius (r ...

  4. Plumbing (mathematics) - Wikipedia

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

    In the mathematical field of geometric topology, among the techniques known as surgery theory, the process of plumbing is a way to create new manifolds out of disk bundles. It was first described by John Milnor [ 1 ] and subsequently used extensively in surgery theory to produce manifolds and normal maps with given surgery obstructions .

  5. Three utilities problem - Wikipedia

    en.wikipedia.org/wiki/Three_utilities_problem

    , is a triangle-free graph, in which every vertex has exactly three neighbors (a cubic graph). Among all such graphs, it is the smallest. Among all such graphs, it is the smallest. Therefore, it is the (3,4)-cage , the smallest graph that has three neighbors per vertex and in which the shortest cycle has length four.

  6. File:Land Drainage Act 1991 (UKPGA 1991-59).pdf - Wikipedia

    en.wikipedia.org/wiki/File:Land_Drainage_Act...

    English: An Act to consolidate the enactments relating to internal drainage boards, and to the functions of such boards and of local authorities in relation to land drainage, with amendments to give effect to recommendations of the Law Commission.

  7. Plumbing drawing - Wikipedia

    en.wikipedia.org/wiki/Plumbing_drawing

    A plumbing drawing, a type of technical drawing, shows the system of piping for fresh water going into the building and waste going out, both solid and liquid. It also includes fuel gas drawings. Mainly plumbing drawing consist of water supply system drawings, drainage system drawings, irrigation system drawings, storm water system drawings.

  8. File:Drainage Act 1881.pdf - Wikipedia

    en.wikipedia.org/wiki/File:Drainage_Act_1881.pdf

    Image title: 06/05/2010; Author: Scanned for Parliamentry Council Office: Short title: 45 VICT 1881 No 27 Drainage; Date and time of digitizing: 04:29, 6 May 2010

  9. File:Land Drainage Act 1976 (UKPGA 1976-70).pdf - Wikipedia

    en.wikipedia.org/wiki/File:Land_Drainage_Act...

    This file is licensed under the United Kingdom Open Government Licence v3.0.: You are free to: copy, publish, distribute and transmit the Information; adapt the Information; ...