One BW lock-keeper told me that his side-pounds would not be reinstated (as
in paddle gear being refitted) as it was felt by BW that boaters might endanger
themselves if left to use them unsupervised - especially if they were not in
possession of the correct 70' working boat for which the gear had been designed.
Ron Jones <[EMAIL PROTECTED]> wrote:
Ken Hornstein wrote:
>> On Locks and Quays tonight, Mike Clarke of L&L fame, whom I thought
>> to be a bit of an expert, remarked that the Bingley 5-rise Lock
>> Staircase was not a good solution to the problem, because every boat
>> that passes through uses 5 lockfuls of water.
>>
>> Now, I am pretty sure that he is just plain wrong here.
>
> No argument here.
>
> The simplest way I've found to think about it is once a staircase
> is "set" for a particular direction, subsequent boats take one
> lockful of water. Switching from going up to going down is "free";
> switching from going down to going up consumes n (n = 5 for Bingley)
> locks of water. Calculating the average water consumption means
> making assumptions on how many times you change direction. If you
> assume worst case (a direction switch each time), then the average
> consumption is n / 2 lockfulls per boat.
>
> Nigel Bromley has a great web page on all this:
>
> http://www.caffnib.co.uk/locks.htm
>
> According to him (I didn't check his math) side ponds makes staircase
> locks a lot more efficient in terms of water usage.
I too thought he was barking up the wrong tree with 5 lockfulls.
Sideponds do save water. Just the problem of getting the boaters to use
them (and BW to maintain them).... I still remember clearing out the ones
at Hanwell, I'll bet they are still not in use....
BTW - program recorded OK. I've just started the mamoth task of installing
software onto the new PC, and hope to be done by week end - allowing some
serious uploading to be done, especially now the broadband has settled down
to a nice fast connection - not much faster at uploads though... :-(
New PC is really quick Hope the video editing will be mucho better.
Ron Jones
Process Safety & Development Specialist
Don't repeat history, unreported chemical lab/plant near misses at
http://www.crhf.org.uk Only two things are certain: The universe and
human stupidity; and I'm not certain about the universe. ~ Albert
Einstein
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