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  2. Subgrade - Wikipedia

    en.wikipedia.org/wiki/Subgrade

    Layers in the construction of a mortarless pavement: A.) Subgrade B.) Subbase C.) Base course D.) Paver base E.) Pavers F.) Fine-grained sand Section through railway track and foundation showing the sub-grade. In transport engineering, subgrade is the native material underneath a constructed road, [1] pavement or railway track (US: railroad track).

  3. Construction estimating software - Wikipedia

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

    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, construction managers, and others may also use cost estimating software to prepare cost estimates for purposes other than bidding such as budgeting ...

  4. Subbase (pavement) - Wikipedia

    en.wikipedia.org/wiki/Subbase_(pavement)

    Layers in the construction of a mortarless pavement: A.) Subgrade B.) Subbase C.) Base course D.) Paver base E.) Pavers F.) Fine-grained sand. In highway engineering, subbase is the layer of aggregate material laid on the subgrade, on which the base course layer is located. It may be omitted when there will be only foot traffic on the pavement ...

  5. Pavement engineering - Wikipedia

    en.wikipedia.org/wiki/Pavement_engineering

    Pavement engineering is a branch of civil engineering that uses engineering techniques to design and maintain flexible and rigid pavements.This includes streets and highways and involves knowledge of soils, hydraulics, and material properties.

  6. Paver base - Wikipedia

    en.wikipedia.org/wiki/Paver_base

    Paver base is a form of aggregate used in the construction of patios and walkways whose topmost layer consists of mortarless (or "dry-laid") pavers. The first layer in the construction of such a surface is called the subgrade—this is the layer of native material underneath the intended surface. It is usually compacted and stabilized.

  7. Base course - Wikipedia

    en.wikipedia.org/wiki/Base_course

    Class 3 Road Base Layers in the construction of a mortarless pavement: A. Subgrade B. Subbase C. Base course D. Paver base as binder course E. Pavers as wearing course F. Fine-grained sand. The base course or basecourse in pavements is a layer of material in an asphalt roadway, race track, riding arena, or sporting

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