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Topic: Bascule

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	Bascule bridge - Wikipedia, the free encyclopedia
		A bascule bridge is a drawbridge with a counterweight that continuously balances the span, or "leaf", throughout the entire upward swing in providing clearance for boat traffic.
		Bascule is a French term for seesaw and balance, and bascule bridges operate along the same principle.
		Although the bascule bridge has been in use since ancient times, it was not until the 1880s that engineers developed the ability to move very long, heavy spans quickly enough for practical application.
	en.wikipedia.org /wiki/Bascule_bridge (338 words)

	Cianbro News Story Viewer
		Due to the size of the bascule leaves and the need for counterbalancing, it was beneficial to provide an efficient structure which minimizes the weight of the leaves where feasible to achieve an economical design.
		Due to the size of the counterweight, and the 78 degree angle of opening needed for the bascule leaf, a sizable clear space had to be provided between the support columns to allow for the movement of the counterweight.
		The upper section of each bascule pier above the shaft is shaped to conform to the enclosed space required to accommodate the movement of the counterweight as the span opens and closes.
	www.cianbro.com /press/newsview.asp?sid=616 (1665 words)

	Tower Bridge Picture and Description
		"Bascule" is derived from the French word for see-saw," and the bascule bridge is a kind of drawbridge which works on a pivot and has a heavy weight at one end to balance the greater length at the other.
		The chief difficulty attending the erection of the bascules was due to the condition that compelled the contractors to leave a clear way of 160 feet between the towers.
		To preserve the balance of the bascule it was necessary to load the shorter, or inner arm with counterpoises, consisting of 290 tons of lead and 60 tons of iron enclosed in ballast boxes at the extreme ends of the girders.
	www.hartwell.demon.co.uk /tbpic.htm (3608 words)

	Bascule bridge -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-20)
		A bascule bridge is a (A bridge that can be raised to block passage or to allow boats or ships to pass beneath it) drawbridge with a counterweight that continuously balances the span, or "leaf", throughout the entire upward swing in providing clearance for boat traffic.
		They are the most common type of movable (A structure that allows people or vehicles to cross an obstacle such as a river or canal or railway etc.) bridge in existence because they open quickly and require relatively little energy to operate.
		Although the bascule bridge has been in use since ancient times, it was not until the (The decade from 1880 to 1889) 1880s that engineers developed the ability to move very long, heavy spans quickly enough for practical application.
	www.absoluteastronomy.com /encyclopedia/b/ba/bascule_bridge.htm (214 words)

	Rall-type Bascule Bridge
		Bascule bridges have sections called "leaves" that rotate upward and away from the centerline of the river, providing clear passage for river traffic.
		The bascule bridge has a very clean, uncluttered look because the counterweights and operating machinery are located out of sight in the piers supporting the bridge.
		The Morrison Bridge is a Chicago-type bascule bridge and the Burnside Bridge is a Strauss-type bascule bridge.
	www.co.multnomah.or.us /dbcs/LUT/bridges/bridge_operations/bascule/rall/rall_bascule_brdg_ops.shtml (649 words)

	FEC Strauss Bascule Bridge
		The bottom of the south end of the Bascule Truss is hinged by a Main (or "heel") Trunnion at the base of the Counterweight Tower.
		When the bascule span is fully lowered, the concrete weights are at their maximum lateral displacement from the vertical centerline of the trunnion.
		The entire weight of the bascule is balanced by the counterweight, and the electric motors have only to overcome inertia in moving the bascule.
	users.ipa.net /~ewall/fecbr.htm (2405 words)

	Annonated Links on Bascule Bridges
		Operation of bascule bridges: This site, maintained by the Multnomach county, describes the operation of different types movable bridges, some of which are bascule bridges.
		The evolution of the modern bascule bridge from the drawbridge across the moat in the medieval ages is traced.
		Testing of segmental casting attachments of bascule bridges: Failure of friction bolts in segmental castings of bascule bridges causes dangerous operating conditions.
	www.eng.usf.edu /~besterfi/bascule/links_to_web_sites_on_bascule_br.htm (1528 words)

	Bascule bridge activated by a cable system - Patent 4751758
		The bascule bridge is activated by a cable system using a pulling force applied to the end of the counterweight for driving the bascule bridge.
		The present invention, is generally related to a leaf bascule bridge system and is used for driving the bascule structure by applying a pulling force at the end of the counterweight through a cable system and a safety cable for unexpected uplift of the bascule bridge structure.
		It utilizes a narrow bascule pier a longer span and uses a pulling force with a large arm applied to the end of the counterweight, in back of the trunnion, instead of a pushing force with a small arm applied to the front of trunnion.
	www.freepatentsonline.com /4751758.html (712 words)

	Strauss-type Bascule Bridge
		These two bascule type bridges have a very clean, uncluttered look to them because the counterweights and operating machinery are located out of sight in the piers supporting the bridge.
		Strauss type bascule bridges differ from their Chicago type cousins in that each counterweight hangs from two trunnions at the rear of the leaf truss.
		The average time for a span opening on the Burnside bridge is eight minutes, though this may seem longer to those waiting in their cars for the bridge to reopen.
	www.co.multnomah.or.us /dbcs/LUT/bridges/bridge_operations/bascule/strauss/strauss_bascule_brdg_ops.shtml (623 words)

	Bascule house farm Poolesville, MD
		Bascule Farm, LLC is nestled on 200 of the most beautiful equestrian acres in the gentle rolling landscape of close-in Montgomery County.
		Our focus at Bascule is on the best care and training of both horse and rider.
		Bascule has the technical expertise, impeccable care, and high expectations needed to produce continued success.
	www.basculefarm.com (352 words)

	Bridges over the Forth and Clyde Canal -resources-fcccp.org.uk (Site not responding. Last check: 2007-10-20)
		Bascule Bridges were the most common type of bridge on the canal.
		There are still some old bascule bridges on the canal, like the Ferrydyke Bridge at Old Kilpatrick, but lots of them have been replaced by concrete road bridges.
		Hungryside Bascule bridge was replaced in 1933 by a steel lifting bridge, and the bascule bridge at Twechar was replaced by a lifting bridge in 1960 – 2 years and 2 months before the canal was closed.
	www.fcccp.org.uk /edu_hist_bridges.html (346 words)

	PB Network \| Issue 47 \| Green Bay's Main Street Bascule Bridge (The Ray Nitschke Memorial Bridge) (Site not responding. Last check: 2007-10-20)
		With the trunnion bascule, the machinery is mounted on the pit and is stationary during the operation of the bridge.
		Each bascule pier houses a PLC control system for the leaf, and the far leaf is controlled by signals from the control tower transmitted by radio modem.
		The new operator tower at the east bascule pier was designed with an octagonal shape to reflect the shape of the towers on the original bridge.
	www.pbworld.com /news_events/publications/network/Issue_47/47_08_ElwellJ_GreenBayMainStreet.asp (1635 words)

	Miami bascule 'bridges' city's past, present, future
		Like the city, the designers of the bascule bridge, which opened late last year, remained true to artistic and aesthetic elements of the bridge's past while incorporating a modern, technologically advanced design into its structure.
		For the company, which designed its first bascule bridge in 1960, the bridge stands apart from those it has designed in the past, from its piers to its high-tech method of actuation.
		KSA was one of the first firms to design bascule bridges using hydraulics, having designed its first in Broward County, Fla., more than 10 years ago, according to Junkin.
	www.roadsbridges.com /rb/index.cfm/powergrid/rfah=\|cfap=/CFID/899323/CFTOKEN/81409314/fuseaction/showArticle/articleID/543 (984 words)

	Unix users up in arms at Bill Gates' knighthood - Talkback - ZDNet UK News
		Bascule : "You also said in anything windows smokes linux hands d...
		Bascule, the linux fundamentalist, screeches "You are the one wh...
		Bascule : "Though I agree there are far to few benchmarks to real...
	www.zdnet.co.uk /talkback?PROCESS=show&ID=20016309&AT=39143733-39020645t-10000019c (754 words)

	Barnegat Bay's Bigger, Better Bascule
		The draw span, which is also constructed of concrete, is supported by three concrete piers: two at the ends of the bridge approaches, and a third pier at the draw-span center.
		The bridge is a single leaf, trunnion bascule bridge.
		In 1963, the concrete deck of the bascule span was replaced with a steel grid to lighten the weight of the draw span.
	www.acppubs.com /index.asp?layout=articlePrint&articleID=CA478853 (1000 words)

	Boynton Beach Bascule Bridge for FLDOT District 4
		A new bascule bridge over the Intracoastal Waterway between the City of Boynton Beach and the Town of Ocean Ridge in Palm Beach County.
		The length of the new structure will be 365 ft. long with a bascule span of 125 ft. horizontal clearance and a center trunnion to trunnion length of 171.65 ft. The bridge will carry 2 lanes of traffic bikepath and sidewalks.
		Thru-girders in the bascule spans to reduce profile grade.
	www.lichtensteinengineers.com /1845.htm (161 words)

	NYCDOT - Bridge Opener (Site not responding. Last check: 2007-10-20)
		Easily the most popular type of movable bridge in existence today, bascule bridges are designed to pivot on a fixed axis.
		The leaves are precisely counterbalanced by weights of sufficient size that relatively little motor power is required for their operation - usually just enough to overcome inertia, frictional resistance, wind and snow loads.
		Bascule bridges are simple and speedy to operate, and because of the relatively small amount of electricity needed for movement, cost efficient.
	www.nyc.gov /html/dot/html/bridges/bridges/opener.html (680 words)

	[No title]
		As a bascule or "balance" bridge, it features machinery that enables the deck to elevate in the manner of a drawbridge.
		The bridge received new bascule lifting machinery, including a new bascule lifting span, most recently in 1983.
		Unlike more conventional drawspans, a bascule bridge functions as a counterpoise bridge in which counterbalance weights assist the raising of the platform.
	uchs.net /HistoricDistricts/uavebridge.html (2903 words)

	Iain Banks' Phonetic Writing (Site not responding. Last check: 2007-10-20)
		elow is a paragraph excerpted from one of Bascule's sections early in
		Bascule is describing the scenery from outside a friend's home.
		The passage is both representative of how Banks uses Bascule's observations and how the phonetic writing works.
	www.scifi.com /sfw/issue27/bascule.html (69 words)

	EPA: Federal Register: Drawbridge Operating Regulation; Back Bay of Biloxi, MS
		Background and Purpose The bascule spans of the Popps Ferry Road Bridge across the Back Bay of Biloxi near Biloxi, Mississippi provide a vertical clearance of 25 feet above mean high water in the closed-to-navigation position and unlimited clearance in the open-to-navigation position.
		Horizontal clearance between bascule span tips is 178 feet with both bascule spans open and 89 feet with only one bascule span open.
		Local commercial fishing vessels will be able to pass the bridge with one bascule span open during the day and both spans open at night with 108 feet of horizontal clearance, 94 feet horizontal clearance within the navigation channel limits.
	www.epa.gov /fedrgstr/EPA-IMPACT/1998/April/Day-07/i9090.htm (1492 words)

	Tea and Cake with the Voting Gnome (Site not responding. Last check: 2007-10-20)
		Bascule bumps his head on the doorframe as he enters the Gnome's bungalow.
		And I never caught anything either," he says, wistfully, "except colds!" Bascule chokes on his tea, and spills some on his latest proposal, which he has been working on during the interview.
		As we are leaving, I look at Bascule's tea-stained proposal, and think that he could do worse than have the Voting Gnome for a Buddy.
	www.bozosoft.com /mike/acka-history/tea-and-cake.html (350 words)

	Tacomy Palmyra Bridge - steel arch and bascule bridge - structures (Site not responding. Last check: 2007-10-20)
		The Tacony - Palmyra Bridge is a bascule bridge.
		This movable bridge has a device operating like a balance or seesaw by which the rising floor section is counterbalanced by a weight.
		Powering the bascule span are two rolling lifts.
	www.pennridge.org /works/tacony.html (409 words)

	Press Notice: Early sunday morning closure of A12 Bascule Bridge at Lowestoft, Suffolk
		The A12 Bascule Bridge will be closed overnight from 01.30 until 06.30.
		Northbound local traffic will be diverted just south of the Bascule Bridge along the A146 Belvedere Road, A1144 Normanston Drive and St Peter's Street rejoining the A12 Jubilee Way.
		Further closures of the A12 Bascule Bridge are due to take plac e on 21 August and 13 November 2005.
	www.highways.gov.uk /news/press_releases/a12/2005_05_19a.htm (527 words)

	Atlantic Beach Bridge (NY 878)
		To help alleviate traffic bottlenecks, the 153-foot-long bascule draw span was built with a vertical clearance of 33 feet, requiring fewer openings.
		The six-lane bridge was constructed with a 68-foot-wide roadway, and six-foot-wide walkway for pedestrians and cyclists.
		The double-leaf bascule drawbridge crosses the Reynolds Channel separating the Long Island mainland and the Long Beach peninsula.
	www.nycroads.com /crossings/atlantic-beach (1284 words)

	Vesconite used for first South African bascule bridge at Cape Town
		The unit is required to last for 100 years and has to withstand harsh environmental conditions such as wind and corrosion as well as strenuous operating conditions of opening and closing every 15 minutes under peak usage.
		This is one of the few bascule bridges in the world that has two separated spans that interlock in the centre, as opposed to a single span that locks onto a land based station.
		The bridge spans 31.4m (103'), weighs 70t, is 3m (10') wide and conforms to the American Standards for Moveable Highway Bridges.
	www.vesconite.com /industry/applications/more/bascule_bridge.htm (195 words)

	BASCULE GATE
		Source: compiled by the editor from various references; see credits.
		Translations for "BASCULE GATE"; alternative meanings/domain in parentheses.
		-4 letters: ablates, ablauts, acetals, actable, baguets, bascule, beagles, because, belugas, cablets, caseate, celesta, cubages, eaglets, eatable, eluates, escuage, euclase, galeate, gateaus, gelates, getable, lactase, leagues, legates, scalage, scutage, segetal, sublate, sulcate, tableau, telegas, useable.
	www.websters-online-dictionary.org /definition/BASCULE+GATE (247 words)

	Hallandale Beach Bascule Bridge, Hallandale Beach, FL (Site not responding. Last check: 2007-10-20)
		This project for the Florida Department of Transportation, District 4, called for the construction of a new double-leaf bascule bridge across the Intracoastal Waterway, at Hallandale Beach, Florida.
		The phasing of the project called for the construction of a new westbound span north of the existing structure, removal of the existing structure, a shift of traffic and construction of the eastbound structure.
		The types of construction in the project included a bascule bridge, cast-in-place box girders, conventional AASHTO girders and reinforced earth walls.
	www.glfconstructioncorp.com /hallandale.html (102 words)

	FR Doc 04-26338
		The old low-level bascule span has been removed and the new mid-level bascule span bridge has been constructed on the same alignment and completed.
		The purpose of the temporary rule was to provide interim operating requirements for the Henderson Avenue bascule span bridge while the Coast Guard conducted the rulemaking to implement permanent regulations for the operation of the bridge.
		Background and Purpose The old Henderson Avenue low-level bascule span bridge across Bayou Portage at Pass Christian, MS has been demolished and removed and the new, mid-level bascule span bridge has been constructed on the exact same alignment.
	a257.g.akamaitech.net /7/257/2422/06jun20041800/edocket.access.gpo.gov/2004/04-26338.htm (2025 words)

	HistoryLink Essay: First bascule bridge at Seattle's Spokane Street is completed in December 1924.
		HistoryLink Essay: First bascule bridge at Seattle's Spokane Street is completed in December 1924.
		First bascule bridge at Seattle's Spokane Street is completed in December 1924.
		In December 1924, the first of two bascule bridges over the Duwamish Waterway at Spokane Street (from south of downtown to West Seattle) is completed.
	www.historylink.org /essays/output.cfm?file_id=3513 (241 words)

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