User:Oosoom/sb6

• Sandbox Useful links and demo code
• Sandbox1 Reference - crowns, ranks, medals, ISO country codes
• Sandbox2 Demo hover over map
• Sandbox3 WIP - Smethwick Summit Conservation Area poi table
• Sandbox4 POI table White Horses / Pen y Ghent
• Sandbox5 POIs Thames sewerage. Try sigs.
• Sandbox6 List of canal junctions. Stop lock.
• Sandbox7 Canal map demo
• Sandbox8 Disposable Sandbox . New: Invasive weeds
• Sandbox9 Manchester MetroLink Eccles Branch. Links to HMS.
• Sandboxs Usually Template Sandbox. Currently Timeline demo.
• Sandboxt Usually Template Sandbox. Currently -- NCIS episodes --
• New articles, Gallery (index), User:Oosoom/Gallery/General, Gallery/Birmingham, Gallery/Canals, Gallery/Police, Gallery/Canal icons, Gallery/Blue plaques, References, Map icons

Special:PrefixIndex/User:Oosoom

• My links on Commons

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• Direct link to Google Map

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Try

• {coord|52.214703|0.12822 |display=inline|region:GB_type:landmark}} 52.214703,0.12822 Ashley Hotel
• {oscoor|545501_259530|Ashley Hotel Magic OS360}}

• {coord|54.560159|-3.0548|display=inline|region:GB_type:landmark}} Legburthwaite, Stybeck Farm

List of canal junctions

Experimenting with sortable table. One row for each canal named at a junction. There may be complete duplicates if a junction has more than one name. Click the icon in the column header:

Junction Name	Location	Canal	Grid Reference	Notes
Aldersley Junction sb6	Oxley, Wolverhampton	Birmingham Canal Navigations	52°36′28″N 2°08′42″W	This is a note
Aldersley Junction	Oxley, Wolverhampton	Staffordshire and Worcestershire Canal	52°36′28″N 2°08′42″W
Autherley Junction	Oxley, Wolverhampton	Staffordshire and Worcestershire Canal	52°36′57″N 2°08′46″W
Autherley Junction	Oxley, Wolverhampton	Shropshire Union Canal	52°36′57″N 2°08′46″W
Old Turn Junction	Birmingham, at National Indoor Arena	Birmingham Canal Navigations	52°28′45″N 1°54′50″W	once incorrectly signposted as Farmer's Bridge Junction
Old Turn Junction	Birmingham, at National Indoor Arena	Birmingham Canal Navigations or Birmingham and Fazeley Canal	52°28′45″N 1°54′50″W	once incorrectly signposted as Farmer's Bridge Junction
Farmer's Bridge Junction	Birmingham, at Farmer's Bridge Top Lock	Birmingham Canal Navigations	52°28′50″N 1°54′44″W	once incorrectly identified as at Old Turn Junction
Farmer's Bridge Junction	Birmingham, at Farmer's Bridge Top Lock	Birmingham and Fazeley Canal	52°28′50″N 1°54′44″W	once incorrectly identified as at Old Turn Junction
Fazeley Junction	Fazeley, near Tamworth	Birmingham and Fazeley Canal	52°36′55″N 1°42′04″W
Fazeley Junction	Fazeley, near Tamworth	Coventry Canal	52°36′55″N 1°42′04″W
Fradley Junction	Fradley, near Alrewas and Lichfield	Trent and Mersey Canal	52°43′25″N 1°47′36″W
Fradley Junction	Fradley, near Alrewas and Lichfield	Coventry Canal	52°43′25″N 1°47′36″W

Stop lock

Warwick Bar stop lock configuration

The stop lock, or bar, is a physical barrier to prevent water loss (or theft) from one private canal to another, in this case the Digbeth branch of the Birmingham Canal Navigations and the Warwick and Birmingham Canal (now the Grand Union]]. In this case the stop lock consists of two opposing lock gates at each end of a lock so that a boat could be transferred from one canal to the other with a miniscule amount of water loss, and no water flow, no matter which canal happened to be the higher at any particular time. Today the gates are chained open as both canals are under common control.

Operation as a tidal stop lock.

The tidal stop lock consists of four standard lock gates, each with the normal paddle gear. Since a stop lock generally controls two canals whose waters are at almost the same level, perhaps differing by only six inches (15 cm), the turbulence caused by sluicing water is minor, so gate paddles are typically used rather than culverted sluices.

Assuming that the canal on the left were lower than that on the right. Gates 1 and 3 would be used as if they were part of a standard lock. Gates 2 and 4 would be kept open. A boat traversing from right to left would open the paddles on gate 3 until the lock fills, open gate 3, enter the lock, and close gate 3 and its paddles. It would then open the paddles on gate 4 until the lock empties, open gate 4, leave the lock, and close gate 4 and its paddles.

If the canal on the left were higher at the time then the other pair of gates would be used in a similar manner, with gates 1 and 3 being kept open.

Stop lock in frame

Operation of a four gate stop lock

The stop lock is a physical barrier to prevent water loss (or theft) from one private canal to another. In this example the stop lock consists of two opposing lock gates at each end of a lock so that a boat could be transferred from one canal to the other with a minimal amount of water loss, and no water flow, no matter which canal happened to be the higher at any particular time. In the UK today the canals are under common control by British Waterways and water levels are usually unified between historically separate canals. The gates are either removed, as at the Worcester Bar (Gas Street Basin) or chained open (as at the Warwick Bar). Operation as a tidal stop lock. The tidal stop lock consists of four standard lock gates, each with the normal paddle gear. Since a stop lock generally controls two canals whose waters are at almost the same level, perhaps differing by only six inches (15 cm), the turbulence caused by sluicing water is minor, so gate paddles are typically used rather than culverted sluices. Assuming that the canal on the left were lower than that on the right. Gates 1 and 3 would be used as if they were part of a standard lock. Gates 2 and 4 would be kept open. A boat traversing from right to left would open the paddles on gate 3 until the lock fills, open gate 3, enter the lock, and close gate 3 and its paddles. It would then open the paddles on gate 4 until the lock reches the lower level, open gate 4, leave the lock, and close gate 4 and its paddles. If the canal on the left were higher at the time then the other pair of gates would be used in a similar manner, with gates 1 and 3 being kept open.