Talk:Lock (water transport)
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[edit] Hiram M. Chittenden Locks
re: the pictures and paragraph of discription of the Hiram M. Chittenden Locks... does this add anything to the article? To me, the section seems disjointed and not relevant to the rest of the article. I am hesitant to revert, though, as it is usefull information. Perhaps it would fit in better at the Hiram M. Chittenden Locks article? Iain 11:38, 29 Nov 2004 (UTC)
- This makes sense. It should be moved. Paranoid 18:31, 1 Dec 2004 (UTC)
I saw a notice that the above lock was going to be drained for maintenance. The notice stated that one should come and see how a lock works. I took advantage of the rare opportunity to take the pictures as locks normally contain water. I put the pictures at the bottom of the "Operation" section with an explanation of what the pictures were about. I guess I was thinking someone would incorporate them into the article. My current thinking is that I should put them along with a paragraph on how they work just below the picture of "A plan and side view of a generic, empty canal lock".
[edit] staircase lock
this was added: "This is because climbing n steps can involve the loss of n lockfuls of water from the upper level and n2 sluice operations, which is much worse than n separate locks. "
Even if this was true the preceeding sentence said that bargees consider these locks nightmares. Why would bargees care how much water was used? Isn't the issue the amount of work required? Rmhermen 02:38, Feb 26, 2005 (UTC)
A true staircase is difficult to operate because it is necessary to ensure the emptying of a lock at the wrong time can cause difficulties. In descending, one must ensure that the lock below is empty before you start to fill it. Peterkingiron 17:47, 13 March 2006 (UTC)
Bargees might not worry about how many lockfulls of water they used, but the canal proprietors might, because they had to ensure that there was sufficient water in the summit level for it to be nevigable. Peterkingiron 17:50, 13 March 2006 (UTC)
Due to not normally being able to pass in the middle of staircase flights ensured many delays, and hence their main dislike by boatmen. Once a direction is chosen the delay between locks is less than a flight due to the closeness of the next lock. On a normal lock flight the next lock has to vacated of the boat in front before filling any way. Mykaskin 16:51, 1 April 2006 (UTC)
Is it really not possible for boats to pass in the middle ? I've never been in anything bigger thena a two-rise - and my mnd hurts trying to visualise this without a model in front of me! Chris Jones
Would it be a good idea to separate Staircase lock to a new page, or is that not very wiki-like? Mykaskin 16:51, 1 April 2006 (UTC)
[edit] Stop lock
I think the reason is slightly incorrect, and needs to be clarified. Stop locks were created to stop the newer canal stealing water. I've also never heard of the second meaning - I've always known them as Flood Gates. After consultation with other canal users I will rewrite it unless someone disagrees or can fill in more information. Mykaskin 16:51, 1 April 2006 (UTC)
 Looking south toward the Lower Mississippi River |
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| Length: | 195 m (640 ft) |
|---|---|
| Width: | 22.9 m (75 ft) |
| Type: | |
| Maximum lift: | 6 m (19.6 ft) |
| Sill: | 9.6 m (31.5 ft) |
| Waterway(s): | Lower Mississippi River, Industrial Canal |
| Year built: | 1923 |
| Geolocation: | |
| These are footnotes | |
[edit] Lock infobox
Since there are a few Wikipedia articles about navigation locks, it occurs to me there could be an infobox template for them. I'm starting an article about the Industrial Lock in New Orleans, and have manually cobbled together the accompanying infobox, but if somebody knows how to make an actual template, that would be cool. I'm sure there could be additional parameters for it that I'm not thinking of. Anyway, does anyone here know how to code such a thing? -- Muffuletta 18:08, 2 April 2006 (UTC)
[edit] Complaint
Buddainabucket appears to have vandalised a very useful big chunk for some dogmatic reason of his own - can someone restore the text and bar him from doing this again?
[edit] Gongoozlers
I've deleted the part about gongoozlers under basic construction and operation as it seems irrelevant and inappropriate. – SolitaryWolf
- Not the best of calls, in my opinion. Whilst the section within which it was presented may have been the wrong one, mention of the concept is appropriate. Added it to "see also" for now untill it can be worked into the article again. LinaMishima 14:37, 10 September 2006 (UTC)
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- Ok, thats fair - SolitaryWolf
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- Speaking of which, I've cleaned up the humourous mess that was the Gongoozler article and made it much more serious, albeit a little lacking in direction (as to be expected for a colloquial term without lots of good references). Feel free to take a look at it and tell me what you think. LinaMishima 16:01, 10 September 2006 (UTC)
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- Sounds good - SolitaryWolf
Yes, very serious. CJ
[edit] Caisson Lock
I've added a short piece about the Caisson Lock on the Somerset Coal Canal. This appears to be the only example of one ever being built and I'm not sure how relevant it is under alternatives - could anyone advise. Also if anyone has the engineering expertise to describe it in a better way than I've done on either article that would be great. — Rod talk 17:55, 6 October 2006 (UTC)
- I would argue that they have more in common with boat lifts than locks.Geni 19:52, 7 October 2006 (UTC)
Agree with Geni - but a short mention should be made here, if only because of the name. Chris Jones
[edit] Water usage in transit of locks
One thing missing from this article is the usage of water when a lock is used. I recall that it is:
differential volume of lock +/- displacement(s) of vessel(s) passing
depending upon whether the vessel is going "up" or "down". Recall that, on canals at least, additional water must enter the summit flight of a canal, and much of it is due to the passage of boats through locks! Comments? Hair Commodore 20:20, 2 February 2007 (UTC)
There is a section on "Use of Water" which discusses this in qualitative terms. A well-written sub-section on how different types of lock use different amounts of water (with or without side ponds etc ) could be useful, but not if it was too dry, which would spoil the easy-to-read nature of this page. Too many Wikipedia articles are completely accurate, completeley comprehensive, and completely unreadable to anyone but a specialist. Chris Jones 07/02(Feb)/2007
[edit] Stop Locks - "newer canal higher" rule question
I always believed that at a junction where there is a stop lock, the existing canal owners would always insist that the newer canal was at a higher level (even if only inches) than the older one - to prevent the newer one stealing water. Then I realised that this is NOT true at Autherley (newer Shroppie - B&LJ - is LOWER than the S&W, at least according to Nicholson). Perhaps this "rule" is a myth, and the only really important thing was that there WAS a difference (in EITHER diretion) so that pressure would keep the stop lock gates shut. Anyone know of other "exceptions" to this (now only tentative) "Rule". CHRIS JONES 12/02(FEB)/2007
[edit] Locks and sluices - merge or explain?
A question from a stupid Swede,
I hope to considerably expand the article Slussen but got stuck on the distinction between these two English words. Is a lock exclusively used for transport and a sluice only for controlling water flows? If so, what to do you people call a canal and its devices when they are used for both purposes? Both words translates to the Swedish word sluss, so its less than obvious from my point of view. Maybe the two articles should be merged?
/ Mats Halldin (talk) 17:36, 10 March 2007 (UTC)
I wrote Karl Johanslussen today, and called the thing both a lock and a sluice. I hope someone knows better than me what to call it.
/ Mats Halldin (talk) 14:22, 11 March 2007 (UTC)
- It is very rare on the English waterways for the word "sluice" to be used for device to allow boats to change levels. I think there may be one or two locks in East Anglia, where the engineering was done by Dutch engineers ("sluis" is the Dutch word for lock OR sluice) , called "something sluice", but not anywhere else. Normally a sluice is something to control water flows, and probably only has one gate. Perhaps it would be true to say that something is called a "sluice" if it is primarily to control water flows, and SOME sluices have two gates where passage by boats is required as a secondary purpose. But since some (most?) sluices only have one gate, it is definitely misleading to think of a sluice and a lock as generally the same thing. Chris Jones (not logged in)
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- (Indented section above) OK, thanks. Apparently, the distinction is lost in translation, that's all... I guess.
- / Mats Halldin (talk) 16:48, 17 March 2007 (UTC)
