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Encyclopedia > Truss bridge
Truss bridge
Truss bridge for a single track railway, converted to pedestrian use and pipeline support
Truss bridge for a single track railway, converted to pedestrian use and pipeline support
Ancestor: Beam bridge
Related: None
Descendant: Cantilever bridge, truss arch bridge, transporter bridge, lattice bridge
Carries: Pedestrians, pipelines, automobiles, trucks, light rail, heavy rail
Span range: Short to medium
Material: Timber, iron, steel, reinforced concrete, prestressed concrete
Movable: May be movable - see movable bridge
Design effort: Medium
Falsework required: Depends upon length, materials, and degree of prefabrication

A truss bridge is a bridge composed of connected elements (typically straight) which may be stressed from tension, compression, or sometimes both in response to dynamic loads. Truss bridges are one of the oldest types of modern bridges. This type of bridge structure has a fairly simple design and is particularly cheap to construct owing to its efficient use of materials. For purposes of analysis most truss bridges may be considered to be pin jointed where the straight components meet. A more complex analysis may be required where rigid joints impose significant bending loads upon the elements. Image File history File links Question_book-3. ... Another view A Southern Pacific Railroad bridge, now part of the Iron Horse Regional Trail. ... This article is about the structure. ... A beam bridge is a direct descendant of the log bridge, now more normally made from shallow steel I beams, box girders, reinforced concrete, or post-tensioned concrete. ... For the dentistry term, see Bridge (dentistry). ... A truss arch bridge combines elements of a truss and an arch. ... The Newport Transporter Bridge A transporter bridge (also ferry bridge or aerial transfer bridge) is a type of movable bridge that carries a segment of roadway across a river. ... Interior structure of a covered lattice bridge A lattice bridge is a form of truss bridge that uses a large number of small and closely spaced diagonal elements that form a lattice. ... Look up Pedestrian in Wiktionary, the free dictionary. ... Car redirects here. ... For other uses, see Truck (disambiguation). ... This article is about light rail systems in general. ... The term heavy rail is often used for regular railways, to distinguish from systems such as trams/light rail and metro. ... Timber in storage for later processing at a sawmill Timber is a term used to describe wood, either standing or that has been processed for use—from the time trees are felled, to its end product as a material suitable for industrial use—as structural material for construction or wood... General Name, symbol, number iron, Fe, 26 Chemical series transition metals Group, period, block 8, 4, d Appearance lustrous metallic with a grayish tinge Standard atomic weight 55. ... For other uses, see Steel (disambiguation). ... Reinforced concrete at Sainte Jeanne dArc Church (Nice, France): architect Jacques Dror, 1926–1933 Reinforced concrete, also called ferroconcrete in some countries, is concrete in which reinforcement bars (rebars) or fibers have been incorporated to strengthen a material that would otherwise be brittle. ... Traditional reinforced concrete is based on the use of steel reinforcement bars, rebar, inside poured concrete. ... A movable bridge is a bridge that can changed in shape or position in order to allow large traffic to pass through it. ... Falseworks are temporary structures used in the building of bridges and other arched structures in order to hold the item in place until its building is sufficiently far advanced to support itself. ... This article is about the structure. ... Tension is a reaction force applied by a stretched string (rope or a similar object) on the objects which stretch it. ... Physical compression is the result of the subjection of a material to compressive stress, resulting in reduction of volume. ... Look up truss in Wiktionary, the free dictionary. ... Figure 1. ...

Warren-type through truss bridge of the former Seaboard Air Line Railway. Located near the village of Willow, Florida. Abandoned by CSX since the mid-1980s.27°39′8.08″N 82°20′24.58″W / 27.6522444, -82.3401611
Warren-type through truss bridge of the former Seaboard Air Line Railway. Located near the village of Willow, Florida. Abandoned by CSX since the mid-1980s.
27°39′8.08″N 82°20′24.58″W / 27.6522444, -82.3401611

In the bridge illustrated in the infobox at right, vertical members are in tension, lower horizontal members in tension, shear, and bending, outer diagonal and top members are in compression, while the inner diagonals are in tension. The central vertical member stabilizes the upper compression member, preventing it from buckling. If the top member is sufficiently stiff then this vertical element may be eliminated. If the lower chord (a horizontal member of a truss) is sufficiently resistant to bending and shear, the outer vertical elements may be eliminated, but with additional strength added to other members in compensation. The ability to distribute the forces in various ways has led to a large variety of truss bridge types. Some types may be more advantageous when wood is employed for compression elements while other types may be easier to erect in particular site conditions, or when the balance between labor, machinery and material costs have certain favorable proportions. Image File history File linksMetadata LittleManateeRiver. ... Image File history File linksMetadata LittleManateeRiver. ... Categories: Stub | Defunct railroad companies of the United States | Defunct companies | Florida Seaboard Air Line Railroad precursors | Georgia railroads | North Carolina railroads | South Carolina railroads | Virginia railroads ... This article is about the U.S. State of Florida. ... CSX redirects here. ... Shear stress is a stress state where the stress is parallel or tangential to a face of the material, as opposed to normal stress when the stress is perpendicular to the face. ... This article is about engineering. ...


The inclusion of the elements shown is largely an engineering decision based upon economics, being a balance between the costs of raw materials, off-site fabrication, component transportation, on-site erection, the availability of machinery and the cost of labor. In other cases the appearance of the structure may take on greater importance and so influence the design decisions beyond mere matters of economics. Modern materials such as prestressed concrete and fabrication methods, such as automated welding, and the changing price of steel relative to that of labor have significantly influenced the design of modern bridges. Traditional reinforced concrete is based on the use of steel reinforcement bars, rebar, inside poured concrete. ... Welding is a fabrication process that joins materials, usually metals or thermoplastics, by causing coalescence. ...

Contents

History in the United States

Because wood was so abundant, early truss bridges would typically use carefully fitted timbers for members taking compression and iron rods for tension members, usually constructed as a covered bridge to protect the structure. In 1820 a simple form of truss, Town's lattice truss was patented, and had the advantage of not requiring high labor skills nor much metal. Few iron truss bridges were built in the United States before 1850. A covered bridge is a bridge, often single-lane, with enclosed sides and a roof. ... A lattice bridge is a form of truss bridge that uses a large number of small and closely spaced diagonal elements that form a lattice. ...


Truss bridges became a common type of bridge built from the 1870s through the 1930s. Examples of these bridges still remain across the United States, but their numbers are dropping rapidly, as they are demolished and replaced with new structures. As metal slowly started to replace timber, wrought iron bridges in the U.S. started being built on a large scale in the 1870s. Bowstring truss bridges were a common truss design seen during this time, with their arched top chords. Companies like the Wrought Iron Bridge Company of Canton, Ohio and the King Bridge Company of Cleveland, Ohio became well-known companies, as they marketed their designs to different cities and townships. The bowstring truss design (photo) fell out of favor due to a lack of durability, and gave way to the Pratt truss design, which was stronger. Again, the bridge companies marketed their designs, with the Wrought Iron Bridge Company in the lead. As the 1880s and 1890s progressed, steel began to replace wrought iron as the preferred material. Other truss designs were used during this time, including the camel-back. By the 1910s, many states developed standard plan truss bridges, including steel Warren pony truss bridges. As the 1920s and 1930s progressed, some states, like Pennsylvania continued to build steel truss bridges, including massive steel through truss bridges for long spans. Other states, like Michigan, utilized standard plan concrete girder and beam bridges, and only a limited number of truss bridges were built. A wrought iron railing in Troy, New York. ... Canton is a city in the U.S. state of Ohio and the county seat of Stark CountyGR6. ... Cleveland redirects here. ... For other uses, see Steel (disambiguation). ... This article is about the U.S. State. ... This article is about the U.S. State. ...


Roadbed types

The four span through truss General Hertzog Bridge over the Orange River at Aliwal North carries vehicular traffic.
The four span through truss General Hertzog Bridge over the Orange River at Aliwal North carries vehicular traffic.
Deck truss railroad bridge over the Erie Canal
Deck truss railroad bridge over the Erie Canal
Pony truss bridge of reinforced concrete
Pony truss bridge of reinforced concrete

The truss may carry its roadbed on top, in the middle, or at the bottom of the truss. Bridges with the roadbed at the top or the bottom are the most common as this allows both the top and bottom to be stiffened, forming a box truss. When the roadbed is atop the truss it is called a deck truss (an example of this was the I-35W Mississippi River bridge), when the truss members are both above and below the roadbed, a through truss (an example of this application is the Pulaski Skyway), and where the sides extend above the roadbed but are not connected, a pony truss or half-through truss. Image File history File linksMetadata Size of this preview: 800 × 600 pixelsFull resolution (1600 × 1200 pixel, file size: 527 KB, MIME type: image/jpeg) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Truss bridge Metadata This file contains... Image File history File linksMetadata Size of this preview: 800 × 600 pixelsFull resolution (1600 × 1200 pixel, file size: 527 KB, MIME type: image/jpeg) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Truss bridge Metadata This file contains... Cover of Time Magazine (April 27, 1925) James Barry Munnik Hertzog, better known as Barry Hertzog, (1866-1942) was Prime Minister of South Africa from 1924 to 1939. ... The Orange River (Afrikaans/Dutch: Oranjerivier), Gariep River or Senqu River is the longest river in South Africa. ... Aliwal North is a town on the Orange River, in central South Africa. ... Image File history File links Size of this preview: 798 × 600 pixelsFull resolution (1292 × 971 pixel, file size: 551 KB, MIME type: image/jpeg) This is an example of a deck truss, with the roadbead atop the trus. ... Image File history File links Size of this preview: 798 × 600 pixelsFull resolution (1292 × 971 pixel, file size: 551 KB, MIME type: image/jpeg) This is an example of a deck truss, with the roadbead atop the trus. ... The Erie Canal (currently part of the New York State Canal System) is a canal in New York State, United States, that runs from the Hudson River to Lake Erie, connecting the Great Lakes with the Atlantic Ocean. ... Image File history File links Metadata Size of this preview: 800 × 533 pixelsFull resolution (2576 × 1716 pixel, file size: 1,003 KB, MIME type: image/jpeg) Puente sobre el Arroyo Tacuarembó Chico, Tacuarembó, Uruguay. ... Image File history File links Metadata Size of this preview: 800 × 533 pixelsFull resolution (2576 × 1716 pixel, file size: 1,003 KB, MIME type: image/jpeg) Puente sobre el Arroyo Tacuarembó Chico, Tacuarembó, Uruguay. ... A box truss structure in a bridge A box truss is a structure composed of three or more chords connected by transverse and/or diagonal structural elements. ... The I-35W Mississippi River bridge was an eight-lane, 1,907 feet (581 m) steel truss arch bridge that carried Interstate 35W across the Mississippi River in Minneapolis, Minnesota, United States. ... A map of the Skyway An aerial view of the Skyway. ...


Sometimes both the upper and lower chords support roadbeds, forming a double-decked truss. This can be used to separate rail from road traffic or to separate the two directions of automobile traffic and so avoiding the likelihood of head-on collisions. A double decker is a bus, airplane, train, tram, ferry, or any public transit vehicle that has two levels for passengers, one deck above the other. ...

The double-decked First Bridge at Wuhan, China carries four lanes of automobile traffic on top, two of rail below over nine truss spans
The double-decked First Bridge at Wuhan, China carries four lanes of automobile traffic on top, two of rail below over nine truss spans
This is also the double-decked bridge at Kansai International Airport,Osaka Japan.The longest double-decked truss bridge in the world. carries three lanes of automobile traffic on top, two of rail below over nine truss spans.
This is also the double-decked bridge at Kansai International Airport,Osaka Japan.The longest double-decked truss bridge in the world. carries three lanes of automobile traffic on top, two of rail below over nine truss spans.


Download high resolution version (1000x209, 21 KB)First modern bridge at Wuhan, China, crossing the Chang Jiang (Yangtze) river. ... Download high resolution version (1000x209, 21 KB)First modern bridge at Wuhan, China, crossing the Chang Jiang (Yangtze) river. ... For the brand of cymbal, see Wuhan cymbals. ... KIX redirects here. ... For other uses, see Osaka (disambiguation). ...


Truss types used in bridges

Some truss types are applicable to the construction of floor and roof structures and pylons as well as bridges.

Some stub sections for various truss types employed in bridges follow - can you can assist by adding text ?

Bailey bridge

Bailey bridge over the Meurthe River, France.
Bailey bridge over the Meurthe River, France.
Main article: Bailey bridge

Designed for military use the prefabricated and standardized truss elements may be easily combined in various configurations to adapt to the needs at the site. In the image at right note the use of doubled prefabrications to adapt to the span and load requirements. In other applications the trusses may be stacked vertically. Image File history File linksMetadata Size of this preview: 800 × 600 pixelsFull resolution (1024 × 768 pixel, file size: 585 KB, MIME type: image/jpeg) Pont Bailey (Bailey bridge) Localisation : Saint-Dié-des-Vosges (France) Construction vers 1970 Photographie personnelle, prise le 24/08/2003. ... Image File history File linksMetadata Size of this preview: 800 × 600 pixelsFull resolution (1024 × 768 pixel, file size: 585 KB, MIME type: image/jpeg) Pont Bailey (Bailey bridge) Localisation : Saint-Dié-des-Vosges (France) Construction vers 1970 Photographie personnelle, prise le 24/08/2003. ... Meurthe is a river in north-eastern France, tributary to the river Moselle. ... This article is about the portable prefabricated bridge. ...

Baltimore truss

The Baltimore truss is a subclass of the Pratt truss. A Baltimore truss has additional bracing in the lower section of the truss to prevent buckling in the compression members and to control deflection. It is mainly used for train bridges, boasting a simple and very strong design.


Bollman truss

Bollman truss in Savage, Maryland. Built in 1869, moved to Savage in 1887. It is still in use today as a pedestrian bridge.
39°8′5.42″N 76°49′30.33″W / 39.1348389, -76.8250917

The Bollman Truss Railroad Bridge at Savage, Maryland is the only surviving example of a revolutionary design in the history of American bridge engineering. The type was named for its inventor, Wendel Bollman, a self-educated Baltimore engineer. It was the first successful all-metal bridge design (patented in 1852) to be adopted and consistently used on a railroad. The design employs wrought iron tension members and cast iron compression members. The use of multiple independent tension elements reduces the likelihood of catastrophic failure and the structure was also easy to assemble. Image File history File links Bollman-bridge-1. ... Image File history File links Bollman-bridge-1. ... Savage is an historic town located in Howard County, Maryland, about 12 miles South of Baltimore, Maryland and 20 miles North of Washington, D.C. It is situated close to the city of Laurel, and the planned community of Columbia. ... Bollman Bridge with Savage Mill tower in background, 1970. ... Savage is an historic town located in Howard County, Maryland, about 12 miles South of Baltimore, Maryland and 20 miles North of Washington, D.C. It is situated close to the city of Laurel, and the planned community of Columbia. ... Wendel Bollman (January 21, 1814 – 1884) was an American self-taught civil engineer, best known for his iron railway bridges. ... Baltimore redirects here. ... A wrought iron railing in Troy, New York. ... Cast iron usually refers to grey cast iron, but can mean any of a group of iron-based alloys containing more than 2% carbon (alloys with less carbon are carbon steel by definition). ...


The Wells Creek Bollman Bridge is the only other bridge designed by Wendel Bollman still in existence, but it is a Warren truss configuration. Wells Creek Bollman Bridge The Wells Creek Bollman Bridge originally served the Baltimore and Ohio Railroads Pittsburgh Division main line. ...

Bowstring arch truss (Tied arch bridge)

A tied arch bridge, in Pittsburgh, Pennsylvania. Note the stone pier in the background from the Wabash Bridge.
A tied arch bridge, in Pittsburgh, Pennsylvania. Note the stone pier in the background from the Wabash Bridge.
Main article: Tied arch bridge

Thrust arches transform their vertical loads into a thrust along the arc of the arch. At the ends of the arch this thrust (at a downward angle away from the center of the bridge) may be resolved into two components, a vertical thrust equal to a proportion of the weight and load of the bridge section, and a horizontal thrust. In a typical arch this horizontal thrust is taken into the ground, while in a bowstring arch the thrust is taken horizontally by a chord member to the opposite side of the arch. This allows the footings to take only vertical forces, useful for bridge sections resting upon high pylons. Image File history File linksMetadata Download high resolution version (1032x893, 166 KB) Summary Cropped version of Image:Pittsburgh skyline daytime. ... Image File history File linksMetadata Download high resolution version (1032x893, 166 KB) Summary Cropped version of Image:Pittsburgh skyline daytime. ... Fremont Bridge (Portland) A tied arch bridge is an arch bridge in which the outward-directed horizontal forces of the arch are borne by the bridge deck, rather than the ground or the bridge foundations. ... City nickname: The Steel City Location in the state of Pennsylvania Founded 1758 Mayor Tom Murphy (Dem) Area  - Total  - Water 151. ... Fremont Bridge (Portland) A tied arch bridge is an arch bridge in which the outward-directed horizontal forces of the arch are borne by the bridge deck, rather than the ground or the bridge foundations. ...

Brown truss

Main article: Brown truss

This type of truss is particularly suited for timber structures that use iron rods as tension members. Diagram, white members are tension (may not be present), grey members are compression A Brown truss is a type of bridge truss, used in covered bridges. ...

Brown truss illustrated. All interior vertical elements are under tension.
Brown truss illustrated. All interior vertical elements are under tension.

Image File history File links Download high-resolution version (1200x360, 14 KB) This is a temporary standin, I hope to make an inkscape based svg with a separate annotation layer when I get a chance. ... Image File history File links Download high-resolution version (1200x360, 14 KB) This is a temporary standin, I hope to make an inkscape based svg with a separate annotation layer when I get a chance. ... Diagram, white members are tension (may not be present), grey members are compression A Brown truss is a type of bridge truss, used in covered bridges. ...

Brunel Truss

See Lenticular truss below


Burr Arch Truss

A covered bridge with a Burr Arch Truss structure
A covered bridge with a Burr Arch Truss structure
Main article: Burr Arch Truss

This combines an arch with a truss to form a structure both strong and ridged. Image File history File linksMetadata Download high-resolution version (3008x2000, 2658 KB) Source Own Picture Date Sunday, July 9, 2006 Author Photo by and (c)2006 Derek Ramsey (Ram-Man) Permission You may NOT use this image on your own web site or anywhere else unless you release this image... Image File history File linksMetadata Download high-resolution version (3008x2000, 2658 KB) Source Own Picture Date Sunday, July 9, 2006 Author Photo by and (c)2006 Derek Ramsey (Ram-Man) Permission You may NOT use this image on your own web site or anywhere else unless you release this image... A covered bridge is a bridge, often single-lane, with enclosed sides and a roof. ... The Burr Arch Truss or simply Burr Truss is a combination of arch and truss design, invented by Theodore Burr, patented in 1817, and used in bridges, usually covered bridges. ...


Cantilevered truss

Main article: Cantilever bridge

Most trusses have the lower chord under tension and the upper chord under compression. In a cantilever truss the situation is reversed, at least over a portion of the span. The typical cantilever truss bridge is a balanced cantilever, which enables the construction to proceed outward from a central vertical spar in each direction. Usually these are built in pairs until the outer sections may be anchored to footings. A central gap, if present, can then be filled by lifting a conventional truss into place or by building it in place using a traveling support. Forth Bridge, Firth of Forth, Edinburgh - a photo taken by myself and in the public domain. ... Forth Bridge, Firth of Forth, Edinburgh - a photo taken by myself and in the public domain. ... For the nearby road bridge, see Forth Road Bridge. ... For the dentistry term, see Bridge (dentistry). ...

Fink truss

Fink Truss (half span and cross section)
Fink Truss (half span and cross section)

Howe truss

The relatively rare Howe truss includes vertical members and diagonals that slope up towards the center, the opposite of the Pratt truss.[1] A truss bridge is a bridge composed of connected elements (typically straight) which may be stressed from tension, compression, or sometimes both in response to dynamic loads. ...

Howe truss illustrated - the diagonals are under compression under balanced loading
Howe truss illustrated - the diagonals are under compression under balanced loading

The vertical members are in pure tension. Image File history File links Size of this preview: 800 × 111 pixelsFull resolution (964 × 134 pixel, file size: 6 KB, MIME type: image/png) Descripció: Esquema duna gelosia Howe. ... Image File history File links Size of this preview: 800 × 111 pixelsFull resolution (964 × 134 pixel, file size: 6 KB, MIME type: image/png) Descripció: Esquema duna gelosia Howe. ...


Kingpost truss

King Post Truss
King Post Truss
Main article: King post

One of the simplest truss styles to implement, the king post consists of two angled supports leaning into a common vertical support. Image File history File links No higher resolution available. ... Image File history File links No higher resolution available. ... A king post (or king-post) is a central vertical supporting post extending vertically from a crossbeam to the apex of a triangular truss. ...


Lattice truss (Town's lattice truss)

Main article: Lattice truss bridge

This type of bridge uses a substantial number of lightweight elements, easing the task of construction. Truss elements are usually of wood, iron, or steel. Description: Photograph of covered bridge interior structure in Guilford, Vermont Source: Photograph taken by Jared C. Benedict on 20 August 2004. ... Description: Photograph of covered bridge interior structure in Guilford, Vermont Source: Photograph taken by Jared C. Benedict on 20 August 2004. ... A lattice bridge is a form of truss bridge that uses a large number of small and closely spaced diagonal elements that form a lattice. ... A covered bridge is a bridge, often single-lane, with enclosed sides and a roof. ... A lattice bridge is a form of truss bridge that uses a large number of small and closely spaced diagonal elements that form a lattice. ...

Lenticular truss

Royal Albert Bridge under construction, 1859
Royal Albert Bridge under construction, 1859
Main article: Royal Albert Bridge

The Lenticular truss was developed by the famous 19th century engineer Isambard Kingdom Brunel for use in railway bridges. It consists of an arcuate tubular upper compression chord and lower eyebar chain tension links. As the horizontal tension and compression forces are balanced these horizontal forces are not transferred to the supporting pylons (as is the case with most arch types). This in turn enables the truss to be fabricated on the ground and then to be raised by jacking as supporting masonry pylons are constructed. This truss has been used in the construction of a stadium[2], with the upper chords of parallel trusses supporting a roof that may be rolled back. Image File history File links Download high-resolution version (3000x2500, 1504 KB) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Royal Albert Bridge ... Image File history File links Download high-resolution version (3000x2500, 1504 KB) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Royal Albert Bridge ... For other bridges bearing the name Albert, see Albert Bridge. ... For other bridges bearing the name Albert, see Albert Bridge. ... Isambard Kingdom Brunel, FRS (9 April 1806 – 15 September 1859) (IPA: ), was a British engineer. ... Look up Tube in Wiktionary, the free dictionary. ... In this light truss bridge each side truss has sixteen elements. ...

Parker (Camelback) truss

A Parker truss bridge is a Pratt truss design with a polygonal upper chord. A "camelback" is a subset of the Parker type, where the upper chord consists of exactly five segments.


Pennsylvania (Petit) truss

An example of this truss type is the Schell Bridge in Northfield, Massachusetts. The Schell Bridge is a steel Pennsylvania truss bridge across the Connecticut River in the town of Northfield, Massachusetts. ... Northfield is a town located in Franklin County, Massachusetts. ...


Pratt truss

A Pratt truss includes vertical members and diagonals that slope down towards the center, the opposite of the Howe truss.[1] It can be subdivided, creating Y- and K-shaped patterns.

Pratt truss illustrated - the interior diagonals are under tension under balanced loading and vertical elements under compression. If pure tension elements are used in the diagonals (such as eyebars) then crossing elements may be needed near the center to accept concentrated live loads as they traverse the span.
Pratt truss illustrated - the interior diagonals are under tension under balanced loading and vertical elements under compression. If pure tension elements are used in the diagonals (such as eyebars) then crossing elements may be needed near the center to accept concentrated live loads as they traverse the span.

Image File history File links Size of this preview: 800 × 122 pixelsFull resolution (980 × 150 pixel, file size: 7 KB, MIME type: image/png) Descripció: Esquema duna gelosia Pratt. ... Image File history File links Size of this preview: 800 × 122 pixelsFull resolution (980 × 150 pixel, file size: 7 KB, MIME type: image/png) Descripció: Esquema duna gelosia Pratt. ... In this light truss bridge each side truss has sixteen elements. ...

Queenpost truss

Queen Post Truss
Queen Post Truss
Main article: Queen post

The queenpost truss, sometimes queen post or queenspost, is similar to a king post truss in that the outer supports are angled towards the center of the structure. The primary difference is the horizontal extension at the centre which relies on beam action to provide mechanical stability. This truss style is only suitable for relatively short spans. [3] Image File history File links No higher resolution available. ... Image File history File links No higher resolution available. ... A king post (or king-post) is a central vertical supporting post extending vertically from a crossbeam to the apex of a triangular truss. ... A statically determinate beam, bending under an evenly distributed load. ...

Truss arch

Main article: Truss arch bridge

A truss arch may contain all horizontal forces within the arch itself, or alternatively may be either a thrust arch consisting of a truss, or of two arcuate sections pinned at the apex. Download high resolution version (513x768, 421 KB) A Canadian Pacific Railway freight eastbound over the Stoney Creek Bridge. ... Download high resolution version (513x768, 421 KB) A Canadian Pacific Railway freight eastbound over the Stoney Creek Bridge. ... A truss arch bridge combines elements of a truss and an arch. ...

Waddel truss

Waddel "A" truss (1898 bridge)
Waddel "A" truss (1898 bridge)

Patented 1894 (U.S. Patent 529,220 ) its simplicity eases erection at the site. It was intended to be used as a railroad bridge. Image File history File links Size of this preview: 745 × 600 pixelsFull resolution (2862 × 2304 pixel, file size: 1. ... Image File history File links Size of this preview: 745 × 600 pixelsFull resolution (2862 × 2304 pixel, file size: 1. ... John Alexander Low Waddell (1854–1938, often shortened to J.A.L. Waddell and sometimes known as John Alexander Waddell) was an American civil engineer and prolific bridge designer, with more than a thousand structures to his credit in the U.S., Canada, and other countries around the world. ...

Warren (non-polar) truss

The Warren truss consists of diagonals that alternate between compression and tension (approaching the center), with no vertical elements. Elements near the center must support both tension and compression in response to live loads.

Warren truss illustrated - some of the diagonals are under compression and some under tension
Warren truss illustrated - some of the diagonals are under compression and some under tension

Image File history File links Size of this preview: 800 × 122 pixelsFull resolution (980 × 150 pixel, file size: 6 KB, MIME type: image/png) Descripció: Esquema duna gelosia Warren. ... Image File history File links Size of this preview: 800 × 122 pixelsFull resolution (980 × 150 pixel, file size: 6 KB, MIME type: image/png) Descripció: Esquema duna gelosia Warren. ...

Whipple Pratt truss

A whipple truss is usually considered a subclass of the Pratt truss because the diagonal members are designed to work in tension. The main characteristic of a whipple truss is that the tension members are elongated, usually thin, at a shallow angle and cross two or more bays (rectangular sections defined by the vertical members).


Vierendeel truss

Main article: Vierendeel bridge

The Vierendeel truss, unlike common pin-jointed trusses, imposes significant bending forces upon its members — but this in turn allows the elimination of many diagonal elements. While rare as a bridge type this truss is commonly employed in modern building construction as it allows the resolution of gross shear forces against the frame elements while retaining rectangular openings between columns. This is advantageous both in allowing flexibility in the use of the building space and freedom in selection of the building's outer curtain wall, which affects both interior and exterior styling aspects. A Vierendeel bridge is a bridge employing a Vierendeel truss. ... Image File history File linksMetadata Download high resolution version (1024x768, 278 KB) Summary Description: Vierendeel bridge at Grammene, Belgium Photographer: Karel Roose Camera: Canon Powershot A70 Shooting Date: 18-June-2003 Licensing Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free... Image File history File linksMetadata Download high resolution version (1024x768, 278 KB) Summary Description: Vierendeel bridge at Grammene, Belgium Photographer: Karel Roose Camera: Canon Powershot A70 Shooting Date: 18-June-2003 Licensing Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free... A Vierendeel bridge is a bridge employing a Vierendeel truss. ... Glass curtain wall of the Bauhaus Dessau. ...

Wichert truss

External links

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Wikimedia Commons has image media such as pictures and art related to:
Through truss bridges
Truss drawings
A Russian truss bridge by Lavr Proskuryakov. Early colour photograph, taken ca. 1912.
A Russian truss bridge by Lavr Proskuryakov. Early colour photograph, taken ca. 1912.
  • Bridge Basics - A Spotter's Guide to Bridge Design - from Pghbridges.com - Illustrates many of the various types of truss arrangements used in bridges.
  • Historic Bridges of Michigan and Elsewhere - Many photos of truss bridges are available on this informative and mainly truss-focused bridge website.
  • Historic Bridges of the U.S. - An enormous database of historic bridges. Over 1000 truss bridges are listed here.
  • Iron and Early Steel Bridges of Ohio - A comprehensive inventory of all remaining truss bridges in Ohio. Includes maps, photos, and invites visitor assistance in identifying extant or demolished bridges.
  • Matsuo Bridge Company: Bridge Types - Truss
  • Historic Bridges of Iowa - An illustrated list of different architectural bridge types found in Iowa, USA. Many of these are truss bridges.
  • structurae.de The Structurae database on bridges.

Image File history File links Commons-logo. ... The Wikimedia Commons (also called Wikicommons) is a repository of free content images, sound and other multimedia files. ... Image File history File links Prokudin-Gorskii-25. ... Image File history File links Prokudin-Gorskii-25. ... Proskuryakovs project for the Yenisey Bridge was awarded the Gold Medal at the Exposition Universelle (1900). ... This article is being considered for deletion in accordance with Wikipedias deletion policy. ... Structurae is an on-line database containing works of structural and civil engineering of all kinds such as Bridges, High-rise buildings, towers, dams, etc. ...

See also

References

  1. ^ a b Matsuo Bridge Company, Bridge Types - Truss, accessed September 2007
  2. ^ Arizona Cardinals Stadium
  3. ^ Covered Bridge's Truss Types
This article is about the structure. ... A moveable bridge is a bridge that moves to allow passage for (usually) boats or barges. ... A beam bridge is a direct descendant of the log bridge, now more normally made from shallow steel I beams, box girders, reinforced concrete, or post-tensioned concrete. ... For the dentistry term, see Bridge (dentistry). ... An arch bridge is a bridge with abutments at each end shaped as a curved arch. ... A suspension bridge is a type of bridge that has been created since ancient times as early as 100 AD. Simple suspension bridges, for use by pedestrians and livestock, are still constructed, based upon the ancient Inca rope bridge. ... A cable-stayed bridge is a bridge that consists of one or more columns (normally referred to as towers or pylons), with cables supporting the bridge deck. ... This article is about the structure. ... Image File history File linksMetadata Download high-resolution version (3264x2448, 3035 KB) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Central bank Federal Reserve System Golden Gate Bridge Tax Bank for International Settlements Income tax Tax, tariff and... The Golden Gate Bridge spans Golden Gate, San Francisco Bay - one of the most admired and possibly most famous bridges in the world. ... Donghai Bridge, longest cross-sea bridge This is a list of the worlds bridges longer than 1 km (3281 ft) sorted by their full length above land or water. ... The Akashi-Kaikyo Bridge has the largest span of any bridge This list of suspension bridges ranks the worlds suspension bridges by the length of main span (distance between the suspension towers). ... The Tatara Bridge has the largest span among cable-stayed bridges This list of the largest cable-stayed bridges ranks the worlds cable-stayed bridges by the length of main span (distance between the suspension towers). ... The Howrah Bridge is the busiest cantilever bridge in the world This list of cantilever bridges ranks the worlds cantilever bridges by the length of their main span. ... This list of the largest arch bridges ranks the worlds arch bridges by the length of main span. ... A list of worlds tallest bridges. ... . ...

  Results from FactBites:
 
Ozaukee County Wisconsin - Saukville's Steel Truss Bridge (215 words)
The bridge itself is steel truss construction and is the last such bridge in Ozaukee County that is open to traffic.
The bridge that crossed the Milwaukee River on Bridge Street in Grafton was moved to Lime Kiln Park in that village, where it now crosses a small creek.
The former interurban bridge that crosses Cedar Creek in Cedarburg was recently refurbished.
Truss bridge - Wikipedia, the free encyclopedia (812 words)
A truss bridge is a bridge composed of connected elements (typically straight) which may be stressed from tension, compression, or sometimes both in response to dynamic loads.
Bridges with the roadbed at the top or the bottom are the most common as this allows both the top and bottom to be stiffened, forming a box truss.
Bridges based on the Bollman truss (patented in 1852) were used successfully by the Baltimore and Ohio Railroad.
  More results at FactBites »

 
 

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