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2. Open web steel joist - Wikipedia

   en.wikipedia.org/wiki/Open_web_steel_joist

   Steel joists and Joist Girders being erected. In structural engineering , the open web steel joist (OWSJ) is a lightweight steel truss consisting, in the standard form, of parallel chords and a triangulated web system, proportioned to span between bearing points.

3. Cellular beam - Wikipedia

   en.wikipedia.org/wiki/Cellular_beam

   The use of steel girders with web openings (SBWOs) for structures such as industrial buildings has proven to be extensive. [12] Civil engineers came up with a solution to use a composite design of ultra-shallow floor joists together with concrete used on the Douala Grand Mall in Cameroon . [ 13 ]

4. I-beam - Wikipedia

   en.wikipedia.org/wiki/I-beam

   Plate girder, formed by welding (or occasionally bolting or riveting) plates. I-beams are commonly made of structural steel but may also be formed from aluminium or other materials. A common type of I-beam is the rolled steel joist (RSJ), sometimes incorrectly rendered as reinforced steel joist.

5. Ironworker - Wikipedia

   en.wikipedia.org/wiki/Ironworker

   Structural ironworkers also erect joist girders, bar joists, and trusses, and also install metal decking. When one bullpin is inadequate, the Ratliff Technique [citation needed] may be utilized in order to force a bullpin to align itself straight with a hole, by driving another bullpin or driftpin between a steel member, and the first bullpin.

6. Girder - Wikipedia

   en.wikipedia.org/wiki/Girder

   A girder (/ ˈ ɡ ɜːr d ər /) is a beam used in construction. [1] It is the main horizontal support of a structure which supports smaller beams. Girders often have an I-beam cross section composed of two load-bearing flanges separated by a stabilizing web, but may also have a box shape, Z shape, or other forms. Girders are commonly used to ...

7. Purlin - Wikipedia

   en.wikipedia.org/wiki/Purlin

   In steel construction, the term purlin typically refers to roof framing members that span parallel to the building eave, [5] and support the roof decking or sheeting. The purlins are in turn supported by rafters or walls. Purlins are most commonly used in Steel Framed Building Systems, where Z-shapes are utilized in a manner that allows ...

8. Girder bridge - Wikipedia

   en.wikipedia.org/wiki/Girder_bridge

   A rolled steel girder is a girder that has been fabricated by rolling a blank cylinder of steel through a series of dies to create the desired shape. These create standardized I-beam and wide flange beam [7] shapes up to 100 feet in length. A plate girder is a girder that has been fabricated by welding plates together to create the desired ...

9. Joist - Wikipedia

   en.wikipedia.org/wiki/Joist

   A double floor is a floor framed with joists supported by larger timbers.. In traditional timber framing there may be a single set of joists which carry both a floor and ceiling called a single floor (single joist floor, single framed floor) or two sets of joists, one carrying the floor and another carrying the ceiling called a double floor (double framed floor).