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  2. Deck railing - Wikipedia

    en.wikipedia.org/wiki/Deck_railing

    Posts on a deck are also typically pressure treated wood and standard sizes are 4x4, 6x6, and 8x8. These posts give structural support to the railing assembly and are the most critical part for the safety of the guard rail assembly. In between the posts, two 2x4s are attached to the posts with screws for the best connection. The lower board is ...

  3. Self-anchored suspension bridge - Wikipedia

    en.wikipedia.org/wiki/Self-anchored_suspension...

    Usually. A self-anchored suspension bridge is a suspension bridge type in which the main cables attach to the ends of the deck, rather than directly to the ground or via large anchorages. [1] The design is well-suited for construction atop elevated piers, or in areas of unstable soils where anchorages would be difficult to construct.

  4. Pontoon bridge - Wikipedia

    en.wikipedia.org/wiki/Pontoon_bridge

    A pontoon bridge is a collection of specialized, shallow draft boats or floats, connected together to cross a river or canal, with a track or deck attached on top. The water buoyancy supports the boats, limiting the maximum load to the total and point buoyancy of the pontoons or boats. [ 2 ] The supporting boats or floats can be open or closed ...

  5. Types of suspension bridges - Wikipedia

    en.wikipedia.org/wiki/Types_of_suspension_bridges

    The deck is flexible and lies on the main cables, which are anchored to the earth. Underspanned suspension bridge: an early 19th-century descendant of the simple suspension bridge. The deck is raised on posts above the main cables. Stressed ribbon bridge: a modern descendant of the simple suspension bridge. The deck lies on the main cables, but ...

  6. Screw piles - Wikipedia

    en.wikipedia.org/wiki/Screw_piles

    Screw piles, sometimes referred to as screw-piles, screw piers, screw anchors, screw foundations, ground screws, helical piles, helical piers, or helical anchors are a steel screw-in piling and ground anchoring system used for building deep foundations. Screw piles are typically manufactured from high-strength steel [ 1] using varying sizes of ...

  7. Washington Bridge (Providence, Rhode Island) - Wikipedia

    en.wikipedia.org/wiki/Washington_Bridge...

    A 2024 report on the bridge suggested that such pre-stressed and post-tensioned concrete structures are poorly understood due to their rarity. [4] In 1996, both bridges were repaired. The westbound bridge had large amounts of its steel understructure replaced, which required some lanes to be closed during the entire project.

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