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  2. Manhole cover - Wikipedia

    en.wikipedia.org/wiki/Manhole_cover

    A manhole cover is a removable plate ... thus less material is needed to cast the manhole cover, meaning lower cost. ... These were replaced with concrete covers, ...

  3. Sanitary manhole - Wikipedia

    en.wikipedia.org/wiki/Sanitary_manhole

    The cover section is the top most section of sanitary manholes. It consists of a frame and a manhole cover. [16] The covers are designed to withstand the loads of the traffic on top of the manholes. Some are suitable for vehicular traffic, and some are for foot traffic only. [7]

  4. Sanitary sewer - Wikipedia

    en.wikipedia.org/wiki/Sanitary_sewer

    A manhole cover for a sanitary sewer access point. View looking down into an open manhole showing two converging sanitary sewer lines. The larger line enters from the right and changes direction within the manhole to exit from the top of the photo. A smaller line enters from the bottom of the photo under the access steps.

  5. Packaged metering manhole - Wikipedia

    en.wikipedia.org/wiki/Packaged_Metering_Manhole

    Larger primary devices (and transitions) that do not readily fit into a standard 4 ft (1.2 m) precast manhole barrel, either a larger barrel or a concrete vault must be used which adds cost. Packaged metering manholes, on the other hand, can integrate primary devices that are larger than the manhole barrel – with any portion that doesn't fit ...

  6. Septic tank - Wikipedia

    en.wikipedia.org/wiki/Septic_tank

    A septic tank consists of one or more concrete or plastic tanks of between 4,500 and 7,500 litres (1,000 and 2,000 gallons); one end is connected to an inlet wastewater pipe and the other to a septic drain field. Generally these pipe connections are made with a T pipe, allowing liquid to enter and exit without disturbing any crust on the surface.

  7. Manhole - Wikipedia

    en.wikipedia.org/wiki/Manhole

    Manhole covers in Helsinki, Finland. Manhole closings are protected by a grating or manhole cover, a flat plug designed to prevent accidental or unauthorized access to the manhole. These covers are traditionally made of metal, [2] but may be constructed from precast concrete, glass reinforced plastic or other composite materials (especially ...

  8. Precast concrete - Wikipedia

    en.wikipedia.org/wiki/Precast_concrete

    The two gray circles are covers to close the lifting anchor holes. Precast concrete building components and site amenities are used architecturally as fireplace mantels, cladding, trim products, accessories and curtain walls. Structural applications of precast concrete include foundations, beams, floors, walls and other structural components.

  9. Permeable paving - Wikipedia

    en.wikipedia.org/wiki/Permeable_paving

    Permeable interlocking concrete pavements are concrete units with open, permeable spaces between the units. [ 28 ] : 2 More recently manufacturers have introduced styles with smaller joint allowing for better ADA compliance and still capturing a significant amount of stormwater.

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