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  2. Sanitary manhole - Wikipedia

    en.wikipedia.org/wiki/Sanitary_manhole

    A sanitary manhole under construction. A sanitary manhole (sewer manhole, [1] sanitary sewer manhole [2] or sewer maintenance hole [3]) is a manhole that is used as an access point for maintenance and inspection of an underground sanitary sewer system. Sanitary manholes are sometimes used as vents to prevent the buildup of pressurized sewage ...

  3. List of New York City manhole cover abbreviations - Wikipedia

    en.wikipedia.org/wiki/List_of_New_York_City...

    Download as PDF; Printable version; In other projects ... This is a list of manhole cover markings found in New York City. ... "Manhole Covers", May 27, 2021.

  4. File:Form 1040 (2021).pdf - Wikipedia

    en.wikipedia.org/wiki/File:Form_1040_(2021).pdf

    Original file (1,275 × 1,650 pixels, file size: 173 KB, MIME type: application/pdf, 2 pages) This is a file from the Wikimedia Commons . Information from its description page there is shown below.

  5. Nominal Pipe Size - Wikipedia

    en.wikipedia.org/wiki/Nominal_Pipe_Size

    Nominal Pipe Size (NPS) is a North American set of standard sizes for pipes used for high or low pressures and temperatures. [1] " Nominal" refers to pipe in non-specific terms and identifies the diameter of the hole with a non-dimensional number (for example – 2-inch nominal steel pipe" consists of many varieties of steel pipe with the only criterion being a 2.375-inch (60.3 mm) outside ...

  6. IRS tax forms - Wikipedia

    en.wikipedia.org/wiki/IRS_tax_forms

    As of the 2018 tax year, Form 1040, U.S. Individual Income Tax Return, is the only form used for personal (individual) federal income tax returns filed with the IRS. In prior years, it had been one of three forms (1040 [the "Long Form"], 1040A [the "Short Form"] and 1040EZ – see below for explanations of each) used for such returns.

  7. Manhole - Wikipedia

    en.wikipedia.org/wiki/Manhole

    A manhole (utility hole, maintenance hole, [1] or sewer hole) is an opening to a confined space such as a shaft, utility vault, or large vessel. Manholes, typically protected by a manhole cover , are often used as an access point for an underground public utility , allowing inspection, maintenance, and system upgrades.

  8. Manhole cover - Wikipedia

    en.wikipedia.org/wiki/Manhole_cover

    A round manhole and its cover. A manhole cover is a removable plate forming the lid over the opening of a manhole, an opening large enough for a person to pass through that is used as an access point for an underground vault or pipe. It is designed to prevent anyone or anything from falling in, and to keep out unauthorized persons and material.

  9. Sewerage - Wikipedia

    en.wikipedia.org/wiki/Sewerage

    When a structure is so severely corroded that human entry is a risk, spinning head application permits an “un-manned” consolidation of the manhole. High pressure dry spray: this method, also called “ shotcrete ” or “gunite” is allowing a faster rate of rehabilitation, and also to make a thicker application in a single pass.

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