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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. Asphalt shingle - Wikipedia

    en.wikipedia.org/wiki/Asphalt_shingle

    Asphalt shingles on a home in Avalon, New Jersey. Two types of base materials are used to make asphalt shingles, organic and fiberglass.Both are made in a similar manner, with an asphalt-saturated base covered on one or both sides with asphalt or modified-asphalt, the exposed surface impregnated with slate, schist, quartz, vitrified brick, stone, [6] or ceramic granules, and the under-side ...

  4. Pavement Surface Evaluation and Rating - Wikipedia

    en.wikipedia.org/wiki/Pavement_Surface...

    The PASER scale is a 1-10 rating system for road pavement condition developed by the University of Wisconsin-Madison Transportation Information Center. PASER uses visual inspection to evaluate pavement surface conditions.

  5. Roof shingle - Wikipedia

    en.wikipedia.org/wiki/Roof_shingle

    An asphalt shingle roof has flexible asphalt shingles as the ridge cap. Some roof shingles are non-combustible or have a better fire rating than others which influence their use, some building codes do not allow the use of shingles with less than a class-A fire rating to be used on some types of buildings. Due to increased fire hazard, wood ...

  6. AASHO Road Test - Wikipedia

    en.wikipedia.org/wiki/AASHO_Road_Test

    The road test used large road user panels to establish the present serviceability rating (PSR) for each test section. Since panel ratings are expensive, a substitute key parameter present serviceability index (PSI) was established. The PSI is based on data on the road's longitudinal roughness, patchwork, rutting, and cracking. Later studies ...

  7. Pavement cracking - Wikipedia

    en.wikipedia.org/wiki/Pavement_cracking

    Cracking along the road axis possibly due to poor construction and formation of a cold joint Alligator cracking. Pavement crack refers to a variety of types of pavement distresses that occur on the surface of pavements.

  8. Crocodile cracking - Wikipedia

    en.wikipedia.org/wiki/Crocodile_cracking

    Like wheel-path fatigue cracking, poor drainage is a main cause of edge cracking, as it weakens the base, which hastens the deterioration of the pavement. [4] Water ponding (a buildup of water which can also be called puddling) happens more frequently near the edge than in the center of the road path, as roads are usually sloped to prevent in ...

  9. GAF Materials Corporation - Wikipedia

    en.wikipedia.org/wiki/GAF_Materials_Corporation

    In 2007, GAF merged with Elk Corporation, a manufacturer of asphalt felts and coatings. [11] In 2011, GAF became the first roofing manufacturer to offer a Lifetime Limited Warranty on all laminated shingles. [5] [6] GAF Energy, a sister company which offers affordable integrated rooftop solar options, was launched in 2019. [12]

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