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  2. Sleeper wall - Wikipedia

    en.wikipedia.org/wiki/Sleeper_wall

    Essentially it is a wall in the way that it is constructed but a sleeper in the way that it functions. Stretcher bond or header-stretcher bond can be used in these walls. sleeper wall can also refer to a retaining wall made from railroad ties. It is used to prevent erosion. It can be made from bricks or concrete blocks. The wall is often used ...

  3. Retaining wall - Wikipedia

    en.wikipedia.org/wiki/Retaining_wall

    Cantilevered retaining walls are made from an internal stem of steel-reinforced, cast-in-place concrete or mortared masonry (often in the shape of an inverted T). These walls cantilever loads (like a beam ) to a large, structural footing, converting horizontal pressures from behind the wall to vertical pressures on the ground below.

  4. Revetment - Wikipedia

    en.wikipedia.org/wiki/Revetment

    Asphalt and sandbag revetment with a geotextile filter. A revetment in stream restoration, river engineering or coastal engineering is a facing of impact-resistant material (such as stone, concrete, sandbags, or wooden piles) applied to a bank or wall in order to absorb the energy of incoming water and protect it from erosion.

  5. Concrete sleeper - Wikipedia

    en.wikipedia.org/wiki/Concrete_sleeper

    Old concrete sleepers can be used for things like retaining walls, else they might be crushed to recycle gravel and the steel reinforcing. [ 9 ] Special sleepers may be necessary on extremely sharp curves, such as the new triangle at Newmarket, New Zealand on the 1,067 mm ( 3 ft 6 in ) gauge of radius 95 m (312 ft).

  6. Substructure (engineering) - Wikipedia

    en.wikipedia.org/wiki/Substructure_(engineering)

    This includes foundations and basement retaining walls. [1] It is differentiated from the superstructure. It safeguards the building against the forces of wind, uplift, soil pressure etc. It provides a level and firm surface for the construction of superstructure. It also prevents unequal or differential settlement and ensures stability of the ...

  7. A Cold War-era bomb shelter in Florida has new owners. What's ...

    www.aol.com/news/cold-war-era-bomb-shelter...

    The one-story, nearly-8,000-square-foot fortification is bulwarked by concrete walls 30 inches thick. The two exterior entrances have armored steel blast doors — one paired with a radiation ...

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