Word Finder - span

definition

The space from the thumb to the end of the little finger when extended; nine inches; an eighth of a fathom.

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(by extension) A small space or a brief portion of time.

example

He has a short attention span and gets bored within minutes.

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A portion of something by length; a subsequence.

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The spread or extent of an arch or between its abutments, or of a beam, girder, truss, roof, bridge, or the like, between supports.

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The length of a cable, wire, rope, chain between two consecutive supports.

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A rope having its ends made fast so that a purchase can be hooked to the bight; also, a rope made fast in the center so that both ends can be used.

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A pair of horses or other animals driven together; usually, such a pair of horses when similar in color, form, and action.

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The space of all linear combinations of something.

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The time required to execute a parallel algorithm on an infinite number of processors, i.e. the shortest distance across a directed acyclic graph representing the computation steps.

To the three of them, the drastic changes that occurred over such a short time span after thousands of years of no change were a warning sign.

The heavy leather rig appeared designed to span both waist and upper thigh.

The centre arch has a span of 152 ft., and rises 29 ft.

This has a span of 278 ft., 138 ft.

The two side span girders are 420 ft.

America, broadening in the north as if to span the oceans by reaching to its neighbours on the east and west, tapering between vast oceans far to the south where the nearest land is in the little-known Antarctic regions, roughly presents the triangular outline that is to be expected from tetrahedral warping; and although greatly broken in the middle, and standing with the northern and southern parts out of a meridian line, America is nevertheless the best witness among the continents of to-day to the tetrahedral theory.

Whether you look at a single country over a span of time, or a group of countries at a specific point in history, the result is the same.

Rankine proved (Applied Mechanics, p. 370) that the necessary strength of a stiffening girder would be only one-seventh part of that of an independent girder of the same span as the bridge, suited to carry the same moving load (not including the dead weight of the girder which is supported by the chain).

The Brooklyn bridge, begun in 1872, has a centre span of 15952 and side spans of 930 ft.

He takes as the live load for a bridge two such engines, followed by a train of wagons covering the span.

The weight of main girders increases with the span, and there is for any type of bridge a limiting span beyond which the dead load stresses exceed the assigned limit of working stress.

Let W 1 be the total live load, Wf the total flooring load on a bridge of span 1, both being considered for the present purpose to be uniform per ft.

For a train advancing from the left, the travelling load shear in the left half of the span is of a different sign from that due to the dead load.

Experience shows that (a) a parabola having the same ordinate at the centre of the span, or (b) a parabola having 15 ons FIG.

The records span from the mid-1800s to the early 1900s.

These awards stretch over a span from 1996 to 2002, and Sweeney is still part of the cast for Days of Our Lives.

The width of the bridge between parapets is 60 ft., except across the centre span, where it is 49 ft.

The main suspension chains are carried across the centre span in the form of horizontal ties resting on the high-level footway girders.

There are fifteen main transverse girders to each shore span, with nine longitudinal girders between each pair.

The horizontal stresses in the flanges are greatest at the centre of a span.

The proportion of depth to span in the Britannia bridge was '.

It would be economical, therefore, to make the girder very deep. This, however, involves a much heavier web, and therefore for any type of girder there must be a ratio of depth to span which is most economical.

Not only were the bracing bars designed to calculated stresses, and the continuity of the girders taken into account, but the validity of the calculations was tested by a verification on the actual bridge of the position of the points of contrary flexure of the centre span.

The depth of the girder at the centre is about one-eighth of the span.

The span between supports was 259 ft., the clear span 2402 ft.; depth between joint pins 16 ft.

Amongst remarkable American girder bridges may be mentioned the Ohio bridge on the Cincinnati & Covington railway, which is probably the largest girder span constructed.

From these, by the aid of the temporary members, the centre span is built out from both sides.

The span to the centres of the end uprights is 820 ft.; width between centres of main uprights at bed-plate 100 ft., and between centres of main members at end of centilevers 20 ft.

The shore piers carry cantilevers projecting one way over the river openings and the other way over a shore span where it is secured to an anchorage.

Such a bridge was the Wearmouth bridge, designed by Rowland Burdon and erected in 1793-1796, with a span of 235 ft.

The centre span is 520 ft.

Each span has four steel double ribs of steel tubes butted and clasped by wrought iron couplings.

This has a span of 566 ft.

At Konigsberg there is a road bridge of two fixed spans of 39 ft., and a central span of 60 ft.

The end lifts which transfer the weight of the bridge to the piers when the span is closed consist of massive eccentrics having a throw of 4 in.

This gives a load of 50 tons per eccentric. One motor is placed at each end of the span to operate the eccentrics and also to release the latches and raise the rails of the steam track.

The Runcorn bridge crosses the Manchester Ship Canal and the Mersey in one span of woo ft., and four approach spans of 552 ft.

General specifications as to span, loading, &c., are furnished to bridge-building companies, which make the design under the direction of engineers who are experts in this kind of work.

The Kuilenburg bridge in Holland, which has a span of 492 ft., was erected on a timber staging of this kind, containing 81,000 cub.

In narrow ravines a bridge of one span may be rolled out, if the projecting end is supported on a temporary suspension cable anchored on each side.

Generally, in addition, wire cables are stretched across the span, from which lifting tackle is suspended.

The girders of the side spans were rolled out so as to overhang the great span by 105 ft., and formed a platform from which parts of the arch could be suspended.

The weights of engines and wagons are now greater, and in addition it is recognized that the concentration of the loading at the axles gives rise to greater straining action, especially in short bridges, than the same load uniformly distributed along the span.

In the case of a bridge of many spans, there is a length of span which makes the cost of the bridge least.

The cost of abutments and bridge flooring is practically independent of the length of span adopted.

Let P be the cost of one pier; G the cost of the main girders for one span, erected; n the number of spans; 1 the length of one span, and L the length of the bridge between abutments.

The cost of a pier will not vary materially with the span adopted.

The cost of the main girders for one span will vary nearly as the square of the span for any given type of girder and intensity of live load.

Hence the total cost of that part of the bridge which varies with the span adopted is C = (n-i)P-FnaP = LP// - P +Lal.

Differentiating and equating to zero, the cost is least when dC _ LP +La =o, dl = l2 P=ale=G; that is, when the cost of one pier is equal to the cost erected of the main girders of one span.