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  2. Tremie - Wikipedia

    en.wikipedia.org/wiki/Tremie

    The tremie concrete placement method uses a vertical or nearly vertical pipe, through which concrete is placed by gravity feed below water level. [4]The lower end of the pipe is kept immersed in fresh concrete so that concrete rising from the bottom displaces the water above it, thus limiting washing out of the cement content of the fresh concrete at the exposed upper surface.

  3. Waffle slab - Wikipedia

    en.wikipedia.org/wiki/Waffle_slab

    Slab depth is typically 75 mm (3 in) to 130 mm (5 in) thick. [5] [3] As a rule of thumb, the depth should be 1 ⁄ 24 of the span. [5] The width of the ribs is typically 130 mm (5 in) to 150 mm (6 in), and ribs usually have steel rod reinforcements. [5] The distance between ribs is typically 915 mm (3 ft). [3]

  4. 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.

  5. 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 ...

  6. List of construction methods - Wikipedia

    en.wikipedia.org/wiki/List_of_Construction_methods

    construction site workers loading water, sand, ballast and cement into a concrete mixer. Concrete is typically used in commercial buildings and civil engineering projects, for its strength and durability. Concrete is a mix of cement and water plus an aggregate such as sand or stone. Its compression strength means it can support heavy weights. [5]

  7. John M. Deutch - Pay Pals - The Huffington Post

    data.huffingtonpost.com/paypals/john-m-deutch

    From January 2008 to April 2010, if you bought shares in companies when John M. Deutch joined the board, and sold them when he left, you would have a -83.3 percent return on your investment, compared to a -17.8 percent return from the S&P 500.

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