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  2. Launching gantry - Wikipedia

    en.wikipedia.org/wiki/Launching_gantry

    Underslung (lower-beam) launching gantry used for Skyline guideway construction (2015). A launching gantry (also called bridge building crane, and bridge-building machine) is a special-purpose mobile gantry crane used in bridge construction, specifically segmental bridges that use precast box girder bridge segments or precast girders in highway and high-speed rail bridge construction projects.

  3. Orthotropic deck - Wikipedia

    en.wikipedia.org/wiki/Orthotropic_deck

    The orthotropic deck may be integral with or supported on a grid of deck framing members, such as transverse floor beams and longitudinal girders. All these various choices for the stiffening elements, e.g., ribs, floor beams and main girders, can be interchanged, resulting in a great variety of orthotropic panels.

  4. California Labor and Workforce Development Agency - Wikipedia

    en.wikipedia.org/wiki/California_Labor_and...

    The California Labor and Workforce Development Agency (LWDA) is a cabinet-level agency of the government of California.The agency coordinates workforce programs by overseeing seven major departments dealing with benefit administration, enforcement of California labor laws, appellate functions related to employee benefits, workforce development, tax collection, economic development activities.

  5. California Department of Industrial Relations - Wikipedia

    en.wikipedia.org/wiki/California_Department_of...

    The California Department of Industrial Relations (DIR) is a department of the government of the state of California which was initially created in 1927. [1] The department is currently part of the Cabinet-level California Labor and Workforce Development Agency, [2] and headquartered at the Elihu M. Harris State Office Building in Oakland.

  6. Falsework - Wikipedia

    en.wikipedia.org/wiki/Falsework

    Stringer: Steel beam that ties caps together Top cap: Steel Beam Post: steel pipe or 12×12 lumber. Bottom cap: steel beam Wedge pack: 4×4 lumber cut into wedges for falsework adjustment, various lumber sizes include 2×6s and plywood Corbel: distribute load to pads. Typical material is 12×12 lumber and steel beams Pad: distribute load to ground.

  7. Structural support - Wikipedia

    en.wikipedia.org/wiki/Structural_support

    Structural members form systems and transfer the loads that are acting upon the structural systems, through a series of elements to the ground. Building Structure Elements include Line (beams, columns, cables, frames or arches, space frames, surface elements (walls, slab or shells) and Freeform. [3]

  8. Eastern span replacement of the San Francisco–Oakland Bay ...

    en.wikipedia.org/wiki/Eastern_span_replacement_of...

    As the ground level rises from the shore to the level of the Yerba Buena Tunnel, the height of the above ground portion of the columns varies. Since the rock structure supporting these is a hard shale, it would be normal under previous engineering methods to simply dig a relatively shallow foundation for each column, with the structural length ...

  9. Willis Tower - Wikipedia

    en.wikipedia.org/wiki/Willis_Tower

    Located on the 103rd floor, 1,353 feet (412.4 m) above ground level, it is the highest observation deck in the United States [174] and one of Chicago's most famous tourist attractions. [175] Tourists can experience how the building sways in wind and see far over the plains of Illinois and across Lake Michigan to Indiana , Michigan , and ...

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