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  2. Staggered truss system - Wikipedia

    en.wikipedia.org/wiki/Staggered_truss_system

    The staggered truss structural system consists of story-high steel trusses placed on alternating column lines on each floor so that the long axis of one truss is always between the trusses on the floor below. [4] The system staggers trusses on a 12’ module, meaning that on any given floor the trusses were 24’ apart. [2]

  3. Span (engineering) - Wikipedia

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

    In engineering, span is the distance between two adjacent structural supports (e.g., two piers) of a structural member (e.g., a beam). Span is measured in the horizontal direction either between the faces of the supports (clear span) or between the centers of the bearing surfaces (effective span): [1] A span can be closed by a solid beam or by ...

  4. List of ancient Greek and Roman roofs - Wikipedia

    en.wikipedia.org/wiki/List_of_ancient_Greek_and...

    List of ancient Greek monuments by descending largest clear span Image Monument Location Region Date Type of roof Width between cella walls Clear span between colonnades Largest clear span Temple of Olympian Zeus (or Olympeion) Agrigento: Sicily: Truss [3] 12.85 – 12.85 [4] Temple of Heracles: Agrigento: Sicily: 5th century BC, early: Truss ...

  5. Open web steel joist - Wikipedia

    en.wikipedia.org/wiki/Open_web_steel_joist

    The CJ-Series Joists are capable of supporting larger floor or roof loadings due to the attachment of the concrete slab to the top chord of the composite joist. Shear connection between the concrete slab and steel joist is typically made by the welding of shear studs through the steel deck to the underlying CJ-Series Composite Steel Joist. [2]

  6. Portal frame - Wikipedia

    en.wikipedia.org/wiki/Portal_frame

    Portal frame is a construction technique where vertical supports are connected to horizontal beams or trusses via fixed joints with designed-in moment-resisting capacity. [1] The result is wide spans and open floors. Portal frame structures can be constructed using a variety of materials and methods.

  7. Truss - Wikipedia

    en.wikipedia.org/wiki/Truss

    The parallel chord truss, or flat truss, gets its name from its parallel top and bottom chords. It is often used for floor construction. A combination of the two is a truncated truss, used in hip roof construction. A metal plate-connected wood truss is a roof or floor truss whose wood members are connected with metal connector plates.

  8. Construction of the World Trade Center - Wikipedia

    en.wikipedia.org/wiki/Construction_of_the_World...

    A grid of lightweight bridging trusses and main trusses supported the floors. The trusses had a span of 60 feet (18 m) in the long-span areas and 35 feet (11 m) in the short span area. [113] The trusses connected to the perimeter at alternate columns, and were on 6-foot-8-inch (2.03 m) centers. The top chords of the trusses were bolted to seats ...

  9. Waffle slab - Wikipedia

    en.wikipedia.org/wiki/Waffle_slab

    The waffle slab floor system has several advantages: Better for buildings that require less vibrations – this is managed by the two way joist reinforcements that form the grid. Bigger spans can be achieved with less material, being more economical and environmentally friendly; Some people find the waffle pattern aesthetically pleasing [4]

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