span


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span

1. Psychol the amount of material that can be processed in a single mental act
2. short for wingspan
3. a unit of length based on the width of an expanded hand, usually taken as nine inches

Span

The interval between any two consecutive supports of a beam, girder, or truss or between the opening of an arch.

Span

 

of a bridge, the part of a bridge that extends between the bridge piers and carries various loads, such as transportation vehicles, pedestrians, and winds, which it transfers to the piers.

A span consists of such bearing components as longitudinal beams or trusses, crossbeams or diaphragms, and slabs for the roadway. In arch bridges the main bearing components are the arches, which support the structure above them. Loads carried by spans are transferred to piers through bearing parts. The roadway slab of a span supports a roadbed and pedestrian sidewalks. The surface of the slab is paved with a layer of topping of asphalt or cement concrete and waterproofing. The material used for a span may be a metal, such as an aluminum alloy or steel, plain or reinforced concrete, native stone, or wood.

The span is the most important part of a bridge. The structural design of a bridge and its static diagram depend on the static diagram of the span. The span may be of the girder, frame, arch, suspension, guy, or combination type. The general architectural composition of a bridge is essentially dependent on the type of span. Ordinarily a span is rectilinear as viewed from the top, although the spans of modern bridges, viaducts, and overpasses over the junctions of transportation lines may have more complicated shapes and be spiraled, ringed, or branched.

The static diagram and the structural material used determine the way in which a span is constructed. Spans are usually built from prefabricated units manufactured in specialized plants or yards.


Span

 

in buildings and structures, the distance between the neighboring supports of horizontal structural elements. There are spans, for example, between the columns that support a roof truss and between the piers that support a bridge span. Standardized span dimensions that conform to the Unified Modules System are currently used in construction in the USSR.

span

[span]
(aerospace engineering)
The dimension of a craft measured between lateral extremities; the measure of this dimension.
Specifically, the dimension of an airfoil from tip to tip measured in a straight line.
(engineering)
A structural dimension measured between certain extremities.
(mathematics)
For a set A, the intersection of all sets that contain A and have some specified property. Also known as hull.
For a set of vectors, the set of all possible linear combinations of those vectors. Also known as linear span.
(statistics)
The difference between the highest value and the lowest value in a range of values.

bearing distance, span

The length of a beam between its bearing supports.

span

1. The interval between two terminals of a construction.
2. The distance apart of any two consecutive supports, esp. as applied to the opening of an arch.
3. A structural member (or part of a member) between two supports.

span

span
spanclick for a larger image
i. The tip-to-tip distance of a wing. Winglets, tip tanks, and tip pods are not included while measuring the span.
ii. The operating radial distance from the root to the tip of a rotating airfoil, such as helicopter rotors or turbine or compressor blades.
References in periodicals archive ?
Throughout the early 1960s Makhulu Spanspanspanspanspanspanspanspanspanspan>>>>>>>>> remained active.
The Chief Bantu Commissioner for the Transkei wrote to his superiors in Pretoria that, in Tsolo, "Makhulu Spanspanspanspanspanspanspanspanspanspan>>>>>>>>> is rapidly gaining control of this District.
By 1962 Makhulu Spanspanspanspanspanspanspanspanspanspan>>>>>>>>> had expanded to nearby Engcobo district, where a number of brutal murders by the organization raised considerable panic in the community.
the so called secretary is the headman of Jenca location the headquarters of Makhulu spanspanspanspanspanspanspanspanspanspan>>>>>>>>>.
Makhulu Spanspanspanspanspanspanspanspanspanspan>>>>>>>>> disappeared after 1962, in large part because of the arrest and conviction of many of its members and the government's declaration of a state of emergency in the Transkei following the 1960 Pondoland Revolt.
We may be tempted to heroize the emergence of Makhulu Spanspanspanspanspanspanspanspanspanspan>>>>>>>>> and other movements that combatted stock theft and which founded anti-colonial struggles, much as an earlier literature tended to celebrate the actions of bandits.
Thirdly, Makhulu Spanspanspanspanspanspanspanspanspanspan>>>>>>>>> points to a history of the political imagination that is only tangentially related to the dominant narratives of political organization and party that continue to structure our understanding of what we usually mean by "political history.
Fourthly, the night battles between the Nephews and Makhulu Spanspanspanspanspanspanspanspanspanspan>>>>>>>>> unveil a history of twentieth-century South Africa as a history of civil conflict.
Fifthly, the ferocious battles between the Nephews and Makhulu Spanspanspanspanspanspanspanspanspanspan>>>>>>>>> indicate the great extent to which discourses of community and polity were masculine discourses.