a bridge that can be raised and lowered
Willamette River


the time of its opening" in 1912. It carries trains on its lower deck, MAX (Metropolitan Area Express) light-rail trains and motorized vehicles on its upper deck, and foot and bicycle traffic on a cantilevered walkway attached to the lower deck. When small ships must pass under the bridge, its double vertical-lift span can raise a lower railway deck without disturbing traffic on the upper deck. Operators can raise both decks as high as above the water. The Steel Bridge is "believed to be the
2097280
Steel Bridge


lift span of the bridge is long. At low river levels the lower deck is above the water, and of vertical clearance is provided when both decks are raised. Because of the independent lifts, the lower deck can be raised to , telescoping into the upper deck but not disturbing it. Each deck has its own counterweights, two for the upper and eight for the lower, totaling 9 million lbs. (4,100 metric tons). The machinery house sits atop the upper-deck lift truss. The operator's room
20731202
Christopher Wheatley


Chicago, where she would be required to navigate shallow rivers, and pass under low bridges. She has four diesel engines, two of which are dedicated to powering her four water cannons. A water cannon on her aft deck is on an extensible mast that can be raised to a height of 30 feet, if required, but can be lowered to pass under low bridges. Her radio mast can also be lowered, for passing under low bridges. The vessel was designed by Canadian Naval Architects Robert Allan Ltd. and built in
15754394
Mast (sailing)


lowered", "large bracket attached firmly to the deck, to which the foot of the mast is fixed; it has two sides or cheeks and a bolt forming the pivot around which the mast is raised and lowered", "substantial fitting for mounting the mast on deck, so that it can be lowered easily for trailering or for sailing under bridges", "hinged device allowing for the easy folding of a mast 90 degrees from perpendicular, as for transporting the boat on a trailer, or passing under a bridge
1698921
Drawbridge


The bridge would be raised or lowered using ropes or chains attached to a windlass in a chamber in the gatehouse above the gate-passage. Only a very light bridge could be raised in this way without any form of counterweight, so some form of bascule arrangement is normally found. The bridge may extend into the gate-passage beyond the pivot point, either over a pit into which the internal portion can swing (providing a further obstacle to attack), or in the form of counterweighted beams that drop into slots in
9829777
Thames sailing barge


forward drive. The mizzen boom in a mulie is sheeted down to the long shallow rudder. The masts are mounted in tabernacles so they can be lowered to pass under bridges; the anchor windlass is used to lower and raise the gear via triple blocks. This takes considerable effort and to aid in the process 'hufflers' were often used. They would come on board to help with lowering and raising the gear (for a fee). The bowsprit where fitted could be 'topped', helping where space was limited
165425
Schwanentorbrücke


The "Schwanentorbrücke "is a vertical-lift bridge in Duisburg, North Rhine-Westphalia, Germany, that crosses the Ruhr River. The bridge can be vertically raised to allow cargo ships to access the inner city, and lowered to allow cars, trains and pedestrians to cross. The bridge is named after the Schwanenturm (meaning 'watch tower) that protected the city walls in the 13th and 14th centuries. Before the Schwanentorbrücke was constructed, a smaller bridge was used by pedestrians and traders. In 1844, a bridge
21938960
Raglan Castle


usually considered to be drawn from contemporary French designs, such as those at Ferté-Milon and Vannes. This drawbridge was designed to have two parts — a wide, heavy bridge that would be raised or lowered when the family was in residence, and a thinner bridge, easier to lift, designed for the use of servants at other times. The Herberts used the bridge as their badge, and it can be seen in the carved window designs around the castle. The drawbridge was replaced with a grander stone bridge in the
6028992
Willamette River


world's only double-lift span that can raise its lower deck independently of the upper deck." The Broadway Bridge, slightly downstream of the Steel Bridge, was the world's longest double-leaf bascule drawbridge at the time of its construction in 1913. Further downstream, the St. Johns Bridge, a steel suspension bridge built in 1931, replaced the last of the Willamette River ferries in Portland. At about RM 6 (RK 10), it carries the U.S. Route 30 Bypass. The bridge has two Gothic towers
2097281
Steel Bridge


is suspended from the top of the lift-span truss, directly below the machinery house, so that the operator can view river traffic as well as the upper deck. After the 2001 addition of a pedestrian walkway on the lower deck, cameras and closed-circuit television monitors were added to allow the operator to view the lower-deck walkway. Until the bridge's mid-1980s renovation, the crossing gates blocking the roadway and sidewalks during raising of the upper-deck lift span were manually operated, rotated horizontally across the roadway
20731203
Marine Parkway–Gil Hodges Memorial Bridge


three-car accident on the bridge on June 3, 1951. Another fatal accident on the bridge on July 14, 1963, killed two and injured seven. On April 10, 1957, a gate for the Marine Parkway Bridge's drawbridge span was being lowered when it hit a bus, injuring four passengers. On November 24, 2014, the bridge experienced a power failure while it was raised to let a boat pass. It remained stuck in the raised position for about six hours before technicians were able to lower it
12367043
Bridge-It


Bridge-It was one of the first games produced for the Amstrad CPC to coincide with the system's release in 1984. Published by Amsoft, it was one of 50 launch titles produced to be sold at the same time as the CPC464. In the game, you take control of an unnamed character that must cross bridges, which can be raised and lowered, in order to get from his house to the other end of the town. Later on, Amstrad gave this game away free with all new Amstrad CPC computers
9191048
Fender Stratocaster


flush for full bridge plate/body contact resonance. As the bridge floats, the instrument has a tendency to go out of tune during double-stop string bends. Many Stratocaster players opt to tighten the springs (or even increase the number of springs used) so that the bridge is firmly anchored against the guitar body: in this configuration, the vibrato arm can still be used to slacken the strings and therefore lower the pitch, but it cannot be used to raise the pitch (a configuration sometimes referred to as
4063264
Civil engineering and infrastructure repair in New Orleans after Hurricane Katrina


including several locks which were closed. Use of some of the locks required raising bridges. The Industrial Canal Lock needed repair, and its lockmaster raised the St. Claude Avenue bridge, but lowered it because of hostility from civilians wanting to cross on both sides. By September 1, 2005, the mouth of the 17th Street Canal had been sealed with the sheet piling preventing lake water from getting to the levee breach. Since no additional water can get through the breach it was no longer necessary to seal the breach itself. The
13235527
Grafton Bridge (New South Wales)


for traffic via Bent Street (Summerland Way), and its lower level supports a rail bridge that carries the North Coast railway line, a water main, and footbridges on either side. There is provision for a second track across the bridge but at this time it is being used as an easement for a water main. The bascule span was operational from its opening in 1932 until 1969. The bascule can no longer be raised due to an added water main. With the decline in shipping along the Clarence River, the
9319691
Lincoln Highway Hackensack River Bridge


towers of black steel is horizontally raised and lowered by engines and counterweights. The design of the structure recalls the industrial era of America. The bridge's lift span is long. It and that of the next upstream vehicular vertical bridge (the Wittpenn) are required by federal regulations be raised on demand at all times. The Lower Hackensack River is channelized to MP 3.4, where there is a turning basin. At one time the river was major waterway for the Port of New York and New Jersey. It remains partially navigable
11770879
Submersible bridge


A submersible bridge is a type of movable bridge that lowers the bridge deck below the water level to permit waterborne traffic to use the waterway. This differs from a lift bridge or table bridge, which operate by raising the roadway. Two submersible bridges exist across the Corinth Canal in Greece, one at each end, in Isthmia and Corinth. They lower the centre span to 8 metres below water level when they give way to ships crossing the channel. The submersible bridge's primary advantage over the similar lift bridge is that there
11167372
Rochester Cathedral


the trapdoor through which bells can be raised and lowered when required. The floor is stepped up to the pulpitum and gives access to the quire through the organ screen. In July 2019, the Nave became host to a nine-hole mini-golf course, with each hole including a model of a different type of bridge. A representative from Cathedral explained that "We hope that, while playing adventure golf, visitors will reflect on the bridges that need to be built in their own lives and in our world today.
19284108
Stoptail bridge


threaded from the rear and out through the front. The string path then goes over the bridge saddles and the string nut to the machine heads located on the headstock. The stopbar tailpiece is meant to be adjusted for string tension. The threaded posts can be lowered or raised to increase or relieve the string tension at pitch. This is an important adjustment especially when changing the gauge of the string set on the guitar. There are practical limits to this technique: too high and you could bend the posts and the strings wo
4538122
Floyd Rose


recessed vibrato installations. The main advantage of the Floyd Rose vibrato system is its double-locking design. This makes the guitar stay in tune through large pitch changes, e.g., forcing the vibrato bar all the way down to the guitar body, or pulling up on the bar to raise the tone by as much as a fifth or a seventh. A typical bridge set-up has it "float"—so the player can both raise and lower the pitch with the vibrato bar. However, if a string breaks, the balance
8249123
Fret


On instruments with frets that are thicker off the fingerboard, string tension and pitch vary with finger pressure behind the fret. Sometimes a player can pull the string toward the bridge or nut, thus lowering or raising the string tension and pitch. However, except for instruments that accommodate extensive string pulling, like the sitar, much less influence on intonation is possible than on unfretted instruments. Since the intonation of most modern western fretted instruments is equal tempered, the ratio of the distances of two consecutive frets to the bridge is formula_1
14829074
Pile–Pontoon Railroad Bridge


a timber-framed deck which could be raised or lowered by as much as 18 feet to allow for changes in the river level, which can vary by as much as 22-1/2 feet (at extreme high water, the bridge could not be used). Adjusting and supporting the deck with timber blocks was a laborious process requiring much manual work. At each end, a short, ramped length of steel span was provided, carrying the track onto the adjoining trestles. Train speed across the pontoons was limited to 7
16338503
Bassin de la Villette


Canal Saint-Martin, and the Bassin de l'Arsenal. Together, these canals and basins extend roughly . Rectangular, eight hundred metres in length and seventy metres in width, it begins at the Rue de Crimée lifting bridge, the last bridge in Paris that can be raised and lowered hydraulically to permit the passage of ship and barge traffic beneath it, and it ends at the Place de la Bataille-de-Stalingrad near the Rotunda de la Villette. River cruise boats tie-up here and the shores of the basin
21477205
Clarence St. Bridge


The Clarence Street Bridge (also known as Bridge 21) is a vertical-lift bridge located in Port Colborne, Ontario. Built between 1927–1929 during 4th Welland Canal Construction, the bridge still serves today as a vital link connecting East and West Port Colborne. The structure uses simple electric motors and counterweights to raise the deck 36.5 meters (120ft.) above passing vessels. The raising and lowering of the bridge takes approximately 90 seconds. The western bridge approach, over former canal locks 26 and 27, was added when
6183020
Canning Bridge bus station


Canning Bridge bus station is a Transperth bus station above Canning Bridge railway station. It is at the intersection of the Kwinana Freeway and Canning Highway in Como, Western Australia. It is served by Transperth routes operated by Path Transit, Swan Transit and Transdev WA. Canning Bridge bus station opened on 11 February 2002. The station originally provided bus services at both the upper (Canning Highway) and lower (Kwinana Freeway) platforms. Due to the construction of the Mandurah line, the lower platforms were closed on 29 January 2006
18662909
San Mateo station


City of San Mateo replaced the bridges during a project completed in October 2016. Planning for the bridge replacement started over a decade earlier. Although increasing the vertical clearance below the tracks was studied and was meant to be accomplished by raising tracks up to over their current elevation, an exemption was granted in 2014 to allow the low clearances at Monte Diablo and Tilton to continue, as raising the clearances at those bridges would also raise the track profile through the San Mateo station, requiring the platforms to be rebuilt. Lowering the roadways
13726675
Don't Raise the Bridge, Lower the River


Don't Raise the Bridge, Lower the River is a 1968 British comedy film produced by Walter Shenson and starring Jerry Lewis. It was released on 12 July 1968 by Columbia Pictures and based on Max Wilk's novel of the same name with the original Connecticut locale moved to Swinging London and Portugal. George Lester (Jerry Lewis) is an American living in Britain. His passion is get-rich-quick schemes, and they have caused financial and personal grief for him and his wife, Pamela, (Jacqueline Pearce)
11683914
Portage Lake Lift Bridge


original 1959 design by Hazelet and Erdal of Chicago of the bridge's liftspan had roadways constructed on both levels with rails embedded in the road surface on the lower deck. This allowed the span to be partially raised to allow small and medium boat traffic to pass underneath without disrupting vehicular traffic. From this middle position, the span would then only need to be raised for large ships or lowered to allow trains to cross. With the end of rail service in 1982, the lowest position is no longer needed to allow trains to
1722337
Fairport Lift Bridge


by 40-horsepower electric motors, the bridge has a vertical lift of 10.6 ft (3.2 m). The structure is entirely raised straight up on four corner posts despite the bridge floor having a 4% grade. Over an average water level on the Erie Canal, approximate clearances below the bridge are 6 ft (2 m) when lowered and 16 ft (5 m) when raised. The control building is located on the southeast side of the bridge. Due to increased traffic usage and need of significant repairs, the Fairport
21461040
Nasal bridge


The nasal bridge is the upper, bony part of the human nose, which overlies the nasal bones. Low-rooted nasal bridges are closely associated with epicanthic folds. A lower nasal bridge is more likely to cause an epicanthic fold, and vice versa. A lower or higher than average nasal bridge can be a sign of various genetic disorders, such as fetal alcohol syndrome. A flat nasal bridge can be a sign of Down syndrome (Trisomy 21), Fragile X syndrome, or 48,XXXY variant Klinefelter syndrome. An appearance
16502910
Orchestra pit


designed as a hydraulic lift, jackscrew lift, locking chain lift, rack and pinion lift, scissors lift or other system that can be raised and lowered as needed. The lift can usually be lowered all the way to a storage space under the stage, or halfway to floor level, or all the way up level with the stage. When lowered all the way, the lift can be filled with equipment or props from underneath the stage and then raised and unloaded on stage. The pit can be raised so it is
12638149
ASB Bridge


, and rail traffic on the lower level. The lower deck could be raised to permit riverboats to pass without interrupting car traffic on top. This design allowed the hangers from the lower deck to go through the truss members of the upper deck. It was built by a combination of Armour Packing Company, Swift & Company, and Chicago, Burlington and Quincy Railroad. In 1987, the Heart of America Bridge opened to the east to replace the vehicular portion. In 1996, the remaining part of the ASB was designated by
17021182
Steel Bridge


takes traffic from southbound Interstate 5 to Interstate 84 was closed in 1988 and removed in 1989, as part of roadway changes intended to improve traffic flow around the Oregon Convention Center. The center was under construction at that time and opened in 1990. The lower deck of the bridge was threatened by major floods in 1948, 1964, and 1996. In 2001, a and cantilevered walkway was installed on the southern side of the bridge's lower deck as part of the Eastbank Esplanade construction, raising to three the number of publicly
20731198
11 foot 8 Bridge


be raised because nearby railroad crossings would also have to be raised with it. The street also cannot be lowered because a major sewer line runs only under Gregson Street. Gregson Street is a one-way street going southbound, so the bridge is only hit from the north side. Despite numerous signs and warning devices, a truck crashes into the bridge on average at least once a month. Most crashes involve rental trucks, even though rental agencies warn renters about the under-height bridges in the area. , there
15601323
Pont Saint-Bénézet


bridge was raised, a floor supported by a ribbed quadripartite vault was inserted into the structure. The simple rectangular upper chapel with the barrel vaulted roof was consecrated in 1411. A side door was created in the lower chapel as the stonework of the raised bridge blocked the original entrance. In 1513 a pentagonal apse with gothic columns was added to the upper chapel. In 1670, after the bridge was abandoned, the relics of Saint Bénézet were transferred to the Hôpital du Pont (also called the Hôpital St Bénézet) within the
20853459
Glimmer Glass Bridge


the leaf is equal to the energy released by the falling counterweight. The toe end of the movable span is linked by cables to cylindrical rolling counterweights. The connecting cable passes over a tower column with a curved track. Moving the counterweights along the curved track thus raises or lowers the bridge. The work expended in raising the leaf is equal to the energy released by the falling counterweight. The toe end of the moveable span is linked by cables to cylindrical rolling counterweights. The rolling counterweight single-leaf bascule bridge with a
44616
St. Claude Avenue Bridge


, on the river side of the lock chamber; it raises when marine traffic enters or exits the lock. The Upper Ninth Ward, which includes neighborhoods such as the Bywater neighborhood, is on the upriver side of the bridge, and the Lower Ninth Ward on the downriver side. In the aftermath of the levee failures during Hurricane Katrina in 2005, many people took refuge from the flooding atop the bridge, and people from the severely flooded Lower Ninth Ward used it to get to the dry, high ground near the river
18013892
West Kill


west. Milone & MacBroom explained that the current bridge, due to both the 45-degree angle at which it crosses the West Kill and its height over the stream, constricts the stream flow during 100-year floods. The firm indicated it was consulting with the state Department of Transportation on the design for a new bridge. It called for the bridge's lower chord to be raised a foot; the additional freeboard would allow more water to flow downstream during floods, thus lowering their levels upstream, away from homes and businesses along the road
3479231
Raising and lowering indices


In mathematics and mathematical physics, raising and lowering indices are operations on tensors which change their type. Raising and lowering indices are a form of index manipulation in tensor expressions. Given a tensor field on a manifold , in the presence of a nonsingular form on (such as a Riemannian metric or Minkowski metric), one can raise or lower indices to change a type tensor to a tensor (raise index) or to a tensor (lower index), where the notation has been used to denote the tensor order with upper
21094081
Hog's Back Bridge


The Hog's Back Bridge is an asymmetrical swing bridge over the Rideau Canal in Ottawa, Ontario. It carries 2 lanes of Hog's Back Road and a sidewalk. The bridge still swings in the summer when boats exceeding in height need to pass. The bridge is hydraulically controlled. 2 wedge cylinders lock the bridge and raise the overhanging edge in place at road level. When the bridge is to be opened, from the control box up at bridge deck level, the bridge operator, who is with Parks Canada, lowers
2742362
Arthur Kill Vertical Lift Bridge


, Covanta Energy signed a contract with the New York City Sanitation Department to barge containers of solid waste from transfer stations in Queens and Manhattan to New York Container Terminal where they will be transferred to rail cars for shipment to Covanta waste to energy plants. Arthur Kill is an important ship channel. The bridge is normally kept in the raised position (open to shipping), lowering to allow the passage of trains. As of 2018, U.S. Coast Guard regulations limit lowering the bridge to two 15-minute periods per day, with advance
12128336
George Washington Bridge Plaza


traffic from Central Road to Center Avenue and westbound traffic from there west to Fletcher Avenue and a westbound on-ramp to New Jersey Route 4. The northbound turnpike can access Bruce Reynolds Boulevard via exit 73 by way of Route 4 or the lower level roadway or exit 73 from the upper and lower level roadways. The southbound turnpike can access Bridge Plaza North via exit 73 on the upper and lower level roadways. The expressway roads and their local street entrances/exits at Bridge Plaza under the jurisdiction of the Port Authority of
3698508
Bridgewater Bridge (Tasmania)


. This refurbishment replaced the vandalised control house and its controls and all of the cabling to raise/lower the bridge. Touted as a "major tourist attraction" with expected regular openings for tourist vessels and private vessels alike to travel between Hobart and New Norfolk, the bridge refurbishment has been a major embarrassment to the Tasmanian Government. It has opened no more than 6 times successfully, caused major traffic delays when on one well promoted occasion it raised approx 14 centimetres and was stuck in that position for a number of minutes before
4663669
U.S. Route 41 in Michigan


span and pleasure craft can pass under the bridge. In the winter, the lift span is lowered so snowmobiles and skiers can use the lower deck while cars and trucks use the upper deck. The Interstate Bridge was built in 1929 for $700,000 (equivalent to $ in ) to carry US 41 over the Menominee River at the state line. This span replaced a series of bridges built to connect Marinette, Wisconsin, and Menominee, Michigan, across the river. The first bridge was built in 1865 with a second built
10543888
Canning Bridge


and Guildford. Flooding in the Swan and Canning Rivers in 1862 damaged the Canning and Helena Bridges, as well as The Causeway. As a result, a new Canning Bridge was built in 1867 by convicts. This second bridge had a clearance of 12 feet (4 m) above the river water; the bridge deck was raised to have a clearance of 18 feet (6 m) in 1892. Due to poor maintenance, the second bridge slowly deteriorated. A fire damaged the structure, and since the road served as
14871750
Darlington's Bridge at Delaware Station


hand railroad bridge for a lower, unspecified amount, Darlington refused, raising the amount to $275,000. Once the bridge was brought, tolls were eliminated. Although the bridge remained in service for another 21 years as a free crossing, the Delaware River Joint Toll Bridge Commission constructed a brand new bridge at the Portland-Columbia. The new toll bridge was constructed in 1953 for $4 million (1953 USD, equal to $ today), but the toll was only one quarter (equal to $ today), like
20079382
Water Avenue Bridge


The Water Avenue Bridge is a highway bridge that carries the Trans Canada Highway across the Fraser river. It was built around 1916 to carry the Kettle Valley Railroad out of the town of Hope to the CPR mainline on the north side of the river. It is a two level bridge with the highway bridge on top. The bridge had two levels, with vehicular traffic on top, and railway traffic on the lower level. The bridge is no longer used by trains, but the lower deck can be observed from the north
11426454
Air draft


will fit within the canal's new widened locks, but they are too tall to pass under the Bridge of the Americas, even at low tide, unless the Bridge of the Americas is raised or replaced in the future (the two first ships are but do have lowerable chimneys, enabling them to pass the Great Belt Bridge). New ships are rarely built not clearing . The Suez Canal Bridge has a clearance over the canal, which is higher than Panama. The Bayonne Bridge is an arch bridge connecting New Jersey with
12263804
NX Bridge


The NX Draw (sometimes colloquially known the "Annie Bridge") is an out-of-service railroad bridge on the Passaic River between Newark and Kearny, New Jersey. It is the 13th bridge from the river's mouth at Newark Bay and is upstream from it. The bascule bridge (sometimes called a jackknife bridge), built by the Erie Railroad and once part of its Newark Branch, has been abandoned in the raised position. The lower of the long Passaic River downstream of the Dundee Dam is tidally influenced
9057674
Upper Swan Bridge


century. At some point between 1836 and 1846 the bridge was renamed the Stone Swan Bridge, with the terms Upper and Lower Swan Bridges being in use since at least 1849 to distinguish the bridges at the northern and southern end of the canal respectively. Surveys of the Upper Swan Bridge between 1840 and 1845 revealed movement in the bridge supports and the deformation of its arched vault. Proposals were drawn up for a reconstruction of the bridge in 1847, which envisaged its replacement with a brick arch raised a metre above the river level
18920075
Pontoon bridge


A pontoon bridge (or ponton bridge), also known as a floating bridge, uses floats or shallow-draft boats to support a continuous deck for pedestrian and vehicle travel. The buoyancy of the supports limits the maximum load they can carry. Most pontoon bridges are temporary, used in wartime and civil emergencies. Permanent floating bridges are useful for sheltered water-crossings where it is not considered economically feasible to suspend a bridge from anchored piers. Such bridges can require a section that is elevated, or can be raised or
10349531
Hospital bed


for feeding or certain other activities, or in some patients, can ease breathing, or may be beneficial to the patient for other reasons. Raising the feet can help ease movement of the patient toward the headboard and may also be necessary for certain conditions. Raising and lowering the height of the bed can help bring the bed to a comfortable level for the patient to get in and out of bed, or for caregivers to work with the patient. Beds have side rails that can be raised or lowered. These rails,
2597485
Norfolk wherry


is pivoted with a large counterbalance weight at the bottom. This enables the wherry to lower the mast for passing under bridges. The mast can be dropped, the wherry continues forward under its momentum and the mast is raised again on the far side by the crew of two. If there is no wind, or the wherry must be turned or otherwise manoeuvred, quant poles are used to provide the required force. A special wherry wheelbarrow was used to unload cargo, e.g. stone, from the wherries. It was made from
14640493
CL 16


unchanged since then. The mast has a pin through it that acts as a pivot point, which is held in a tabernacle. When rigged with a tackle on the forestay, it can be lowered to pass beneath bridges. The pivot also facilitates mast raising. As of 2013, it has a Portsmouth Yardstick rating of 95.4. The C&L website says the rating is 97. The CL boatbuilder website differs from a sailmaker's statements about the rig's size. It claims that the boat carries sails that are: "Main
2045999
Mother Brook


a bathhouse, assuming the water quality improved. When the Dedham Mall was built in the 1960s, part of the Brook was piped underground. The sill placed at the mouth has since been replaced with a mechanical floodgate that can be raised or lowered depending on water levels in the Charles. There is a small brick building on the site with the floodgate controls. It was proposed in 1978 to use the three remaining dams on the bridge to generate hydroelectric power. In 2009, the Dedham Selectmen proposed designating the brook as an
20858185
Self-reconfiguring modular robot


matrix is ability to form larger structures such as an elongated bridge, more complex structures such as a robot with many arms or an arm with more degrees of freedom, and increasing strength. Increasing strength, in this sense, can be in the form of increasing the rigidity of a fixed or static structure, increasing the net or collective amount of force for raising, lowering, pushing, or pulling another object, or another part of the matrix, or any combination of these features. There are two basic methods of segment
8635311
DuSable Bridge


docks in the vicinity of the river using the lower deck. Each of the bridge's leaves is divided into two along the axis of the bridge such that it functions as two parallel bridges that can be operated independently of one another; at the time of construction bridges over the Chicago River were frequently struck by vessels, and this duplex arrangement allows for leaves damaged in such a collision to be opened for repair without needing to completely close the bridge to traffic. The counterweights are below the level of the lower deck and when
12111082
Bridges and tunnels across the Yangtze River


river. With the advent of economic growth around the country and widespread use of heavy freight trucks, bridges along the Yangtze have been bearing greater load, leading to greater strain on older bridge structures. The Jiujiang Yangtze River Bridge was originally designed to carry trucks weighing up to . In 2008, the tonnage limit was raised to . In November 2011, a crack was discovered in the bridge's steel structure and forced the authorities to close the bridge to freight traffic. In February 2012, the tonnage limit was lowered to .
17263649
Lock (water navigation)


to be lowered temporarily while a boat passes under an obstruction such as a low bridge. During canal restoration, a drop lock may be used where it is impractical or prohibitively expensive to remove or raise a structure that was built after the canal was closed (and where re-routing the canal is not possible). A drop lock can consist of two conventional lock chambers leading to a sump pound, or a single long chamber incorporating the sump - although the term properly applies only to the second case. As the pounds
4257538
D*


can reduce the node's cost. If not, the RAISE state is propagated to all of the nodes' descendants, that is, nodes which have backpointers to it. These nodes are then evaluated, and the RAISE state is passed on, forming a wave. When a RAISED node can be reduced, its backpointer is updated, and passes the LOWER state to its neighbors. These waves of RAISE and LOWER states are the heart of D*. By this point, a whole series of other points are prevented from
6808057
Khaju Bridge


pedestrians. Octagonal pavilions in the center of the bridge on both the down and the upstream sides provide vantage points for the remarkable views. The lower level of the bridge may be accessed by pedestrians and remains a popular shady place for relaxing. Iranian architects have raised concerns about damage inflicted on the bridge during recent "improvement program" renovations, citing, among other problems, the destruction of the original stepped base of the bridge, the alterations made to the riverbed, and the removal of the Safavid inscribed stone blocks from the
16601016
Richmond–San Rafael Bridge


the California Toll Bridge Authority Act. The preliminary design was approved on and California approved the preliminary report on . The California Toll Bridge Authority authorized the issue of in bonds on and subsequently sold on to construct a single-deck bridge. The remaining was reserved for construction contingencies and to complete the lower deck of the bridge. The $62 million raised from bond sales was divided into three parts: for construction, to address interest obligations on the bonds during the construction period, and in construction contingency. In 1954, Governor
18550574
Aerial Lift Bridge


the top span had to be raised to accommodate the new deck when raised. The support columns on either side were also modified so that they could hold new counterweights to balance the weight of the lifting portion. The new bridge first lifted for a vessel on March 29, 1930. The bridge can be raised to its full height of 135 feet in about a minute, and is raised about 5,000 times per year. The span is about . As ships pass, there is a customary horn-blowing sequence that is copied
10733552
Life Is Feudal: MMO


changed by the players themselves. The in-game terrain is divided into cells, each of which is assigned a value by which it is possible to know its height relative to sea level. In Life is Feudal terrain can be modified by either lowering or raising the tile by 0.1 from its height. When lowering terrain the players gains a chunk of material removed from the ground while it costs 1 chunk of material in raising the ground. However, only soft ground material can be raised or lowered and there are limitations in
15003985
Hochdonn High Bridge


the two existing support points. Once removed, the steel structure was lowered onto a transport barge. The new structure that arrived the night before on another transport barge was lifted into place. While lowering and lifting work was going on, this section of the canal was closed and a large number of ships were waiting to pass; the alternative was to navigate around the northern tip of Denmark. The new central span was also raised by to a height of above the canal, the same height as other bridges on the canal
13072548
Virgin Trains USA


, the project calls for significant investment and upgrades to three moveable bridges: St. Lucie, Loxahatchee, and New River. These improvements will ensure that bridge mechanical systems for raising and lowering the bridge spans are either fully upgraded or replaced. All Aboard Florida has stated that, prior to it becoming operational, it will start to regularly notify mariners of scheduled bridge closings via the internet, smart phone application and countdown signage on the bridges to enable mariners to have real-time information to decrease wait times at each bridge. Also
10463915
Montague Street Bridge


media discussion. Construction firm Johns & Waygood was contracted to build the bridge in 1914 as part of the infrastructure of the Port Melbourne railway line. Montague Railway Station was located just south of the bridge and mainly served workers at nearby factories. Flooding on Montague Street was a perennial problem; in 1916, the area around the bridge was under a foot of water and pedestrians could not approach it. In 1934, South Melbourne council raised the underlying street level by about two feet, thus lowering the height of the bridge.
10995870
Stretcher


can be raised or lowered to facilitate patient transfer. The head of the stretcher can be raised so that the patient is in a sitting position (especially important for those in respiratory distress) or lowered flat in order to perform CPR, or for patients with suspected spinal injury who must be transported on a spinal board. The feet can be raised to what is called the Trendelenburg position, indicated for patients in shock. Some manufacturers have begun to offer hybrid devices that combine the functionality of a stretcher, a recliner chair,
2614631
Kamer 2 Sailing Marathon


back along the Ringvaart to the Kaag Lake. A significant part of the route leads through narrow waterways with fixed bridges. As a result, the competition is restricted to sloops with masts that can be lowered and raised easily. Some of the canals are too narrow to be negotiable upwind by sail. Therefore, participants are allowed to paddle, punt or tow their sloops to overcome trajectories that offer prohibitive circumstances for sailing. When winds are strong the Kamer 2 Sailing Marathon is essentially a sailing race. In quiet weather, however
10670930
Middle Level Navigations


but the lock has been lengthened to , by the addition of a third set of mitre gates, facing away from the river, which can only be used when the level of the river is lower than that of the Creek. Welches Dam Lock is still sized for Fen Lighters, at just long. Access to the southern reaches of the Levels was improved in 2006, when soldiers from the 53rd Field Squadron of the 39 Engineer Regiment raised the level of a Bailey bridge at Ramsey Hollow. This had previously restricted passage,
6761011
SB Centaur


when tacking. The sails were made of flax; their rust colour came from the traditional waterproofing solution; a mixture of ochre, fish oil and urine. The masts were mounted in tabernacles so they could be lowered to pass under bridges without losing headway, with the anchor windlass used to lower and raise the gear via triple blocks. This took considerable effort and to aid in the process 'hufflers' were often used; they would come on board to help with raising the gear (for a fee). The bowsprit
5714030
Tilt bridge


arch. To raise the bridge, this whole assembly rotates as a single, rigid structure. As the arch tilts lower, the pathway rises, each counterbalancing the other so that a minimum of energy is needed. The resultant appearance in motion leads to it sometimes being called the "eyelid bridge", since its shape is akin to the blinking of an eye if seen from along the river. Two further tilt bridges are known to exist in Belgium, both constructed in 2011. The (Scheepsdalebridge) in Brugge and the
7966573
Bay Farm Island Bridge


of the 1953 road bridge is the largest cofferdam built on a state highway since the construction of the San Francisco–Oakland Bay Bridge. The bascule span is long and carries a counterweight of . Interlocks are provided so that traffic gates and bollards must be raised before the draw can be opened. The 1995 bicycle bridge is linked to the 1953 road bridge so that when the road bridge opens, the bicycle bridge also opens; however, the bicycle bridge can be operated manually to open independently of the road bridge. The bicycle
4364073
Paro Chhu


bridge called Nyamai Zam spans the Paro Chhu. The original bridge was washed away in a flood in 1969 and the present one is a reconstruction. Earlier versions of this bridge were removed to protect the dzong. The bridge was also shown in the movie Little Buddha by Bernardo Bertolucci Below the town of Paro, the river runs immediately to the west of Bhutan's only international airport. That airport is renowned for the hair-raising final approach. The lower Paro Chhu river is a good stretch of about for beginner/intermediate
10114368
Hochneukirch station


bridge was built over the railway for the road between Hochneukirch and Hackhausen. In 1967, the bridge had to be raised 60 centimetres and the track lowered to allow the installation of the overhead line for the electrification of the line. The old railway bridge was demolished in 1988 and replaced by a new reinforced concrete bridge. On 30 May 1980, passenger traffic on the line to Stolberg was discontinued and the tracks of the line to Jülich were dismantled. Freight transport to Ameln continued until 1 June 1984. Freight traffic was also
14183503
Dorman Long


's first vertical lift bridge. With a lifting span of long by wide, it is constructed from 8000 tons of Teesside steel and 28,000 tons of concrete with towers high. The electrically operated lifting mechanism allowed the road to be lifted in one and a half minutes by means of ropes passing through sheaves in the four corner towers. Newport Bridge is no longer raised or lowered; it is now an immovable road bridge crossing the River Tees. "The following is a list of some of the bridges built by the Dorman Long
15714811
Richmond Bridge, London


It was found that the 18th-century foundations, consisting of wooden platforms sunk into the river bed, had largely rotted away, and they were reinforced with steel pilings and concrete foundations. During the widening works the opportunity was also taken to lower slightly the roadbed at the centre of the bridge and raise the access ramps, reducing the humpbacked nature of the bridge's central section. James Paine went on to design three other Thames bridges after Richmond, at Chertsey (1783), Kew (1783), and Walton (
16774815
Oregon Trunk Rail Bridge


lift-type span for river navigation. The new lift span's first complete raising and lowering took place on June 21, 1957, and the bridge reopened to rail traffic the following day. The swing span, to the south of the lift span, remains in place, but it ceased to be used after the lift span was installed. It was "permanently locked in place" in October 1956, for the start of work to modify the bridge. All of the bridge's piers rest on rocks that were normally
9892670
Claiborne Avenue Bridge


on New Orleans), with the most extreme devastation on the Lower 9th Ward side. The bridge was out of service for months, left in the up position to accommodate Canal shipping, until it was restored to service in early 2006. On May 20, 2008 17-year veteran New Orleans Police Officer Tommie Felix was killed when his vehicle drove off the bridge and plunged into the canal while the bridge was in the raised position. Eye witness accounts say that the gates which come down to indicate the bridge's closure were not
11209524
Lincoln Highway Hackensack River Bridge


colleagues to bring additional flares to the western approach to the bridge to better regulate traffic. Extreme weather conditions had caused poor visibility, and the gate that normally lowers when the bridge is in the open position had been malfunctioning for some time. The officers drove across the bridge and delivered the flares. They did not know that the lift span had then been raised, and as they were making their return trip, their vehicle went over the edge of the open bridge. While the body of Carsen was recovered approximately 90 minutes
11770881
Fort Wayne Railroad Bridge


bridge remained in use. The 1868 bridge was a five-span wrought-iron lattice truss built for the Pittsburgh, Fort Wayne and Chicago Railway with two simple plate girder spans as approach roads at each end. In 1918 the bridge and associated approaches were raised (as were other neighboring bridges) to increase navigable headroom. The lower level was used by local freight trains switching in the Downtown area and the Strip District. Its tracks were removed in the 1980s as part of a major track and platform realignment through Pennsylvania Station
17636807
Claverton Pumping Station


house and has weatherboard sides. The east gable wall has three doors allowing access to the wheel itself. Water is diverted from the river by Warleigh Weir, about upstream. The water flows to the pumping station down a wide leat, which is crossed by a single segmental arch bridge with a central keystone. The water passes over depressing sluices which can be raised or lowered by hand cranking, and then powers a breastshot water wheel. The wide wheel is in two sections each wide and in diameter with a gap between them
1143860
Royal Engineers bridging and trackway equipment


. Heavy Girder Over Bridge The Heavy Girder Over Bridge (HGOB) provides a lower profile allowing easier crossing for heavy transporters and tankers on line of communication routes. The bridge is transported on 1 DROPS pallet of a 14 tonne truck. A Royal Engineers Section and a crane is used to construct the bridge. The bridge can be constructed by hand but the components are extremely heavy. Like the Medium Girder Over Bridge it is used to reinforce current bridges to allow heavier traffic also like the Medium Girder Over Bridge it can also
3078178
Kalgan River


wattlebird and red-eared firetail. Amphibious species that can be commonly be found in and around the river are frogs, such as the western banjo and moaning frogs. Reptiles frequently found in the area include tiger snakes and dugites. The southern end of the Kalgan River has two bridges of note: The Upper Kalgan bridge and the Lower Kalgan Bridge. The Lower Kalgan Bridge was built from 1906 and opened in 1908. At in length, it was the longest of its kind over water in the State at the time.
1741129
Astley, Greater Manchester


Astley. The Duke's plans were approved, despite opposition from the local population. Canal traffic brought trade to Astley Green where the Hope and Anchor Inn (now the Boathouse) was built with stabling for horses that pulled the barges. The original canal bridge built to connect Lower and Higher Green lasted until 1904, when it was replaced. The second bridge was replaced in 1920 by an iron bridge, which could be raised to counter the effects of mining subsidence. A boatyard was established by Lingard's Bridge. The Liverpool
10415697
Eglinton Tournament Bridge


the 'new' bridge to create an extra arch of bricks in addition to the cast iron, may have weakened the structure, contributing to its eventual partial collapse. The army used the bridge extensively with large lorries and even tanks crossing over it. The lower courses of ashlar on the bridge abutments and central pier were vermiculate. At some point the height of the weir beneath had been raised using an odd assortment of re-used stonework; this would have increased the depth and extent of the waters behind it. The
10718668
Pulaski Skyway


Pulaski Skyway. Engineers replaced the bearings and lowered the turnpike bridge by , without shutting it to traffic. By the 2000s, the Pulaski Skyway was considered functionally obsolete since its design did not meet highway bridge standards. In 2007, it was rated structurally deficient. The 2007 collapse of the I-35W Mississippi River bridge in Minneapolis raised concerns about the stability of the skyway, which was one of eight New Jersey bridges with similar design features. Within days of the collapse, NJDOT announced that it would start a previously planned one-
11746115
James River Bridge


) passes over Warwick Boulevard (U.S. Route 60). After an intersection with River Road and the entrance to Huntington Park, the four-lane divided bridge begins, lying to the southeast a part of the old bridge that remains as a fishing pier. The 126.5 m (415.0 ft) lift span over the shipping channel, with a clearance of 44.1 m (145 ft) when raised and 18.2 m (59.7 ft) when lowered, is about 1/4 of the way along the 7.0714 km (4.3940 mi) bridge
14154051
Vibrato systems for guitar


over-engineered. The six individual bridge saddles were multi-grooved "barrels". The individual barrels were not grooved deeply enough to always securely hold strings during heavy picking. Each barrel had a tiny adjustment screw at each end. Adding the intonation adjustment screws, and the screws at each end of the bridge saddle to raise or lower the bridge as a whole, gave the bridge "twenty" separate adjustment possibilities. Many players found this too complicated. That, and the tendency of strings to jump out of the
16913503
Jubilee Bridge, Southport


for two cars to pass. The bridge rose in the middle to allow small boats to pass under it; a central span could be raised and lowered using a hand winch to allow larger vessels to pass, but the process took 25 minutes. The bridge cost approximately £23,000. The bridge was officially opened for pedestrian traffic on 8 April 1925 by John Appel, Member of the Legislative Assembly for Albert. It could not be opened for vehicular traffic until the road from Main Beach to Burleigh Heads was completed. On 29
18712467
Lower Plenty, Victoria


as while its toll earning capability was not as "remunerative" as had been hoped, the bridge was a "great public convenience". The request was denied. In October 1863 there was a great flood causing the Yarra to rise 12 metres. It even flooded Elizabeth Street in Melbourne's Central Business District. A number of bridges were washed away. In March 1865 another deputation this time of Templestowe residents to the Acting Commissioner of Roads and Bridges, offered ₤600 English Pounds raised by them towards a new bridge to replace
21091307
Jet bridge


end to be raised or lowered to connect with either the departures level or the arrivals level of the terminal building. Loading bridges restrict aircraft parking to spots immediately adjacent to the terminal. Thus, airports use mobile staircases to facilitate disembarking at hardstands (remote parking positions). Loading bridges may pose hazards to aircraft if handled improperly. If the bridge is not retracted fully before departure, it may contact protruding parts of the taxiing aircraft (e.g., a pitot tube), requiring repair and delays. Furthermore, during cold weather
7291239
Jet bridge


or right. The cabin, at the end of the loading bridge, may be raised or lowered, extended or retracted, and may pivot, to accommodate aircraft of different sizes. These motions are controlled by an operator's station in the cab. The cab is provided with an accordion-like canopy, which allows the bridge to dock with aircraft with differing shapes, and provide a nearly weather-proof seal. Additionally, many models offer leveling devices for the portion of the floor that makes contact with the aircraft;
7291235
Marine Parkway–Gil Hodges Memorial Bridge


located above water level in the bridge's "closed" position. When the Marine Parkway Bridge is "open", the center span can be raised to a height of to allow vessels to pass beneath the roadway. The bridge was raised 157 times in 2006. The curled tops of the towers were designed to give the bridge a whimsical aspect. , drivers pay $4.75 per car or $4.00 per motorcycle for tolls by mail. E‑ZPass users with transponders issued by the New York E‑ZPass Customer Service Center pay $2.29
12367040
Guitar


acoustic guitar is to transfer the vibration from the strings to the soundboard, which vibrates the air inside of the guitar, thereby amplifying the sound produced by the strings. On all electric, acoustic and original guitars, the bridge holds the strings in place on the body. There are many varied bridge designs. There may be some mechanism for raising or lowering the bridge saddles to adjust the distance between the strings and the fretboard (action), or fine-tuning the intonation of the instrument. Some are spring-loaded
11576504
Bideford


the first decade of the 17th century, the bridge trustees were taken to court by the people of Bideford for feasting and seeing plays at the expense of the trust funds. The people won the court case, although it is unclear whether the trustees were forced to resign after the scandal, or whatever else happened to them. In 1790 the bridge was the longest in Devon. In the 1820s there was talk of converting the bridge so that it could be raised and lowered to allow larger boats and ships to pass under it
118713
Broad Channel, Queens


Channel Volunteers' quarters to assist in answering alarms on the island. The bridges at the northern and southern ends of the island were draw bridges and were frequently opened for large passing ships. The southern bridge was particularly active due to the numerous tankers carrying fuel to nearby Idlewild Airport (now John F. Kennedy International Airport). On average it took from 30 to 45 minutes from the lowering of the traffic barriers, the opening and closing of the lift bridge, and the raising of the traffic barriers before traffic could again move
16776332
Royal Engineers bridging and trackway equipment


to steer the ferry when it is in water. The engines that are used to power the propulsion units are also used to operate the hydraulic rams, which raise and lower the two ramps. Air Portable Ferry Bridge Safety Line System All APFB systems include a safety line system designed to protect the user in the event of a fall from the bridge. It uses a static line and fall arresters attached to the demolition harness. It is designed for use during ramping, decking and positioning kerbs. Logistic Support Bridging (LSB)
3078165
The Queen's Own Cameron Highlanders of Canada


. The following day the unit passed through Les Fusiliers Mont-Royal to clear the northeast sector of the town up to the Van Starkenborgh Canal. "B" Company arrived at the canal to find the bridge over it held by the Germans who had raised the centre span making it impassable. Aided by two Dutch civilians Lieutenant W. C. McNeill crossed a narrow catwalk, which was being swept with automatic weapons fire, to the bridge mechanism and lowered the bridge. "B" Company quickly attacked across the bridge and the German
5061566
Semi-trailer truck


axle, giving six axles and 22 wheels in total. This format is now common across Europe, due to reduced road-loading requirements, especially for bridges. The lift axles used on both tractors and trailers allow the trucks to remain legal, but increases maneuverability while at the same time reducing fuel consumption and tyre wear when carrying lighter loads, by raising one or multiple axle set(s) off the roadway. Although lift axles usually operate automatically, they can be lowered manually even while carrying light loads, in order to remain
10328632