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2. Pavement condition index - Wikipedia

   en.wikipedia.org/wiki/Pavement_Condition_Index

   The pavement condition index (PCI) is a numerical index between 0 and 100, which is used to indicate the general condition of a pavement section.The PCI is widely used in transportation civil engineering [1] and asset management, and many municipalities use it to measure the performance of their road infrastructure and their levels of service. [2]

3. Construction estimating software - Wikipedia

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

   The SharpeSoft Estimator, displaying an example of a trench calculation. Calculations: Most estimating programs have built-in calculations ranging from simple length, area, and volume calculations to complex industry-specific calculations, such as electrical calculations, utility trench calculations, and earthwork cut and fill calculations.

4. Granular base equivalency - Wikipedia

   en.wikipedia.org/wiki/Granular_base_equivalency

   Here is an example of GBE calculation adopted from Piryonesi (2019). [1] This example belongs to a road in the LTPP database. This road is made of the following layers: subbase, base, and three layers of hot mixed asphalt concrete.

5. California bearing ratio - Wikipedia

   en.wikipedia.org/wiki/California_bearing_ratio

   The California Bearing Ratio (CBR) is a measure of the strength of the subgrade of a road or other paved area, and of the materials used in its construction.. The ratio is measured using a standardized penetration test first developed by the California Division of Highways for highway engineering. [1]

6. Grade (slope) - Wikipedia

   en.wikipedia.org/wiki/Grade_(slope)

   d = run Δh = rise l = slope length α = angle of inclination. The grade (US) or gradient (UK) (also called stepth, slope, incline, mainfall, pitch or rise) of a physical feature, landform or constructed line is either the elevation angle of that surface to the horizontal or its tangent.

7. International roughness index - Wikipedia

   en.wikipedia.org/wiki/International_roughness_index

   Roughness progression for a road in Texas, US. Blue dots show the times of maintenance. The international roughness index (IRI) is the roughness index most commonly obtained from measured longitudinal road profiles.