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  2. Granular base equivalency - Wikipedia

    en.wikipedia.org/wiki/Granular_base_equivalency

    GBE translates the thickness of different road layers to a number using a set of coefficients. So, to calculate the GBE, the depth of each layer should be multiplied by the granular equivalency factor for the material in that layer. In the next step the sum of the converted layer thicknesses is calculated. [2]

  3. Road surface - Wikipedia

    en.wikipedia.org/wiki/Road_surface

    Concrete roadway in San Jose, California A concrete road in Ewing, New Jersey. Concrete surfaces (specifically, Portland cement concrete) are created using a concrete mix of Portland cement, coarse aggregate, sand, and water. In virtually all modern mixes there will also be various admixtures added to increase workability, reduce the required ...

  4. Baldwin Steps - Wikipedia

    en.wikipedia.org/wiki/Baldwin_Steps

    The Baldwin Steps are a public outdoor staircase located in Toronto, Ontario, Canada dating from the 19th century. The Steps, which are constructed of stone and concrete, transcend a steep escarpment marking an ancient shoreline.

  5. Jersey barrier - Wikipedia

    en.wikipedia.org/wiki/Jersey_barrier

    The UK equivalent is the concrete step barrier. [citation needed] First tested in 1968 by the then Department of Highways in Ontario, Canada, the Ontario Tall Wall is a variant of the Jersey barrier. [10] Standing at 42 inches (107 cm), it is 10 inches (25 cm) taller than the standard Jersey barrier.

  6. Rut (roads) - Wikipedia

    en.wikipedia.org/wiki/Rut_(roads)

    Ruts can be formed by wear, as from studded snow tires common in cold climate areas, or they can form through the deformation of the asphalt concrete, pavement or subbase material. In modern roads the main cause is heavily loaded trucks. These heavy loaded trucks imprint their tire impressions on roads over time, causing ruts.

  7. Stairs - Wikipedia

    en.wikipedia.org/wiki/Stairs

    The tread depth of a step is measured from the edge of the nosing to the vertical riser; if the steps have no nosing, it is the same as the going; otherwise it is the going plus the extent of one nosing. The going of a step is measured from the edge of the nosing to the edge of nosing in plan view. A person using the stairs would move this ...

  8. Red Dye 3 Just Got Banned. These Are the Foods to Avoid If ...

    www.aol.com/lifestyle/red-dye-3-just-got...

    The FDA’s recent ban on Red Dye No. 3, set to take effect by 2027 for foods and 2028 for drugs, marks a significant step in addressing safety concerns over artificial food dyes in the U.S. food ...

  9. Pavement performance modeling - Wikipedia

    en.wikipedia.org/wiki/Pavement_performance_modeling

    Generally concrete pavements are more durable in warmer climates, and asphalt pavements are more resilient against cold weather. The joints in concrete pavement is another source of issue. In a certain type of road (concrete, asphalt or gravel), the thickness of layers and type of materials used in base, sub-base and pavement layer matters.

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