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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 ...
Darcy Lever lattice girder railway bridge, Lancashire, England. Laced vertical struts and diagonal ties on the cantilever portion of the now-demolished eastern span of the San Francisco–Oakland Bay Bridge) A lattice girder is a truss girder where the load is carried by a web of latticed metal. [1]
These struts divide the wings into bays which are braced by diagonal wires. The flying wires run upwards and outwards from the lower wing, while the landing wires run downwards and outwards from the upper wing. The resulting combination of struts and wires is a rigid box girder-like structure independent of its fuselage mountings.
Cross section of a steel dam with cantilever struts. In the cantilever strutted version, shown in the illustration at left, the top strut (or struts, depending on design) can be fashioned into a cantilever truss. By all going to the same footing, the upper part of the deck girders are thus in tension and the moment of the cantilever section is ...
The main structure of the aircraft was formed by a pair of triangular section wire-braced trusses arranged one above another, connected by five sets of paired struts. Each girder bore a pair of substantial flexibly mounted struts extending outwards, the wings being tensioned between the ends of the longitudinal girders and the outer ends of the ...
Three sloping cross braces completed each girder. The rectangular tailplane, fitted with elevators, was placed over the ends of the girders, its leading edge braced by a central, vertical strut to the hull which also supported the rudder post out beyond the hull on upper and lower sloping struts.
Like some Zöglings, the Hols der Teufel had a light nacelle, ending under the wing at a forward leaning vertical knife edge around the aft central wing strut, enclosing both the pilot's seat and the other supporting struts. Aft, the cross braced girder had a horizontal upper beam onto which the tailplane was
The bar(s) runs down and below the girder and stand off the girder on one or more struts anchored to the girder at its bottom surface. The struts are sized to accept the compressive forces imposed without bending. The load limit to this member is the crippling capacity (horizontal failure) of the girder. Bargeboard