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  2. Construction estimating software - Wikipedia

    en.wikipedia.org/wiki/Construction_estimating...

    Construction cost estimating software is computer software designed for contractors to estimate construction costs for a specific project. A cost estimator will typically use estimating software to estimate their bid price for a project, which will ultimately become part of a resulting construction contract. Some architects, engineers ...

  3. Cost estimate - Wikipedia

    en.wikipedia.org/wiki/Cost_estimate

    A cost estimate is the approximation of the cost of a program, project, or operation. The cost estimate is the product of the cost estimating process. The cost estimate has a single total value and may have identifiable component values. A problem with a cost overrun can be avoided with a credible, reliable, and accurate cost estimate. A cost ...

  4. Cost estimation models - Wikipedia

    en.wikipedia.org/wiki/Cost_estimation_models

    Cost estimation models are mathematical algorithms or parametric equations used to estimate the costs of a product or project. The results of the models are typically necessary to obtain approval to proceed, and are factored into business plans, budgets, and other financial planning and tracking mechanisms.

  5. Catenary arch - Wikipedia

    en.wikipedia.org/wiki/Catenary_arch

    A mudbrick catenary arch A catenary curve (left) and a catenary arch, also a catenary curve (right). One points up, and one points down, but the curves are the same. A catenary arch is a type of architectural arch that follows an inverted catenary curve. The catenary curve has been employed in buildings since ancient times.

  6. Parabolic arch - Wikipedia

    en.wikipedia.org/wiki/Parabolic_arch

    Unlike a catenary arch, the parabolic arch employs the principle that when weight is uniformly applied above, the internal compression (see line of thrust) resulting from that weight will follow a parabolic curve. Of all arch types, the parabolic arch produces the most thrust at the base. Also, it can span the widest area.

  7. Segmental arch - Wikipedia

    en.wikipedia.org/wiki/Segmental_arch

    A segmental arch is a type of arch with a circular arc of less than 180 degrees. [1] It is sometimes also called a scheme arch. [2] The segmental arch is one of the strongest arches because it is able to resist thrust. [3] [clarification needed] To prevent failure, a segmental arch must have a rise that is equal to at least one-eighth the width ...

  8. Robert Maillart - Wikipedia

    en.wikipedia.org/wiki/Robert_Maillart

    Robert Maillart, c. 1925. Robert Maillart (16 February 1872 – 5 April 1940) was a Swiss civil engineer who revolutionized the use of structural reinforced concrete with such designs as the three-hinged arch and the deck-stiffened arch for bridges, and the beamless floor slab and mushroom ceiling for industrial buildings.

  9. Soldiers and Sailors Memorial Arch - Wikipedia

    en.wikipedia.org/wiki/Soldiers_and_Sailors...

    The arch, built with brownstone from Portland, Connecticut, was completed in 1886 at a cost of about $60,000, and dedicated on September 17, 1886. The north frieze, by Samuel James Kitson , tells a story of war with (on the right) a figure of General Ulysses S. Grant surveying his troops and (on the left) marines leaping from a boat to rush ...