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 ?
Verbal memory span in children: Speech timing cues to the mechanisms underlying age and word length effects.
An adaptation of the recognition memory span task has been successfully used to assess memory loss in patients with different degenerating brain diseases (Moss, Albert, Butters, and Payne, 1986); to assess memory in aging monkeys (Moss, Killiany, Lai, Rosene, and Herndon (1997); and more recently, to assess developmental changes of recognition memory span in children (Rehbein, Barria, Massardo, Oyarzun and Schade, 2002).
But also because working memory span predicts a wide range of very different complex cognitive tasks such as reasoning (Garcia-Madruga et al.
The material for the sequences of digits in single and dual conditions consisted of series of digits related to the participant's memory span, read to the participants during 2 minutes.
s shifting component executive process, random generation on the inhibition and updating components, whereas working memory span tasks appear to load on the updating component.
The nature of the relationship between attention, or memory span, and intelligence has been explored by intelligence and memory researchers alike in the past two decades (Bachelder & Denny, 1977a, 1977b; Cantor, Engle & Hamilton, 1991; Cohen & Sandburg, 1977; Crawford, 1991; Dempster, 1981; Engle, Nations & Cantor, 1990; Jensen, 1964; Jensen & Figueroa, 1976; Stankov, 1983).
According to memory research, those who defend structural developmental changes in working memory argue that by the age of sixteen there are no more modifications in working memory span (Pascual-Leone, 1980; Kail, 1986; Siegel, 1994).
London, May 5 (ANI): Do you also believe that goldfish have a memory span of only three seconds, and that dogs fail to recognise colours other than white and black?
As usual there's a tale behind the show - this time a fishy one involving clownfish Nemo, his overprotective father, Marlin, and cheerfully optimistic Dory who has a somewhat limited memory span.
The correlation between these memory span tasks and intelligence measures could derive from their short-term storage or processing requirements.
The threat comes in the wake of new research on the intelligence and memory span of fish.
A comparison of immediate memory span for digits, letters, and words.