Dear David
Thank you (and indeed others that have contributed) - this makes sense in context.
The penstocks are described as being mortared into the forebay, whereas the hutches
require excavation into solid rock.
Thanks!
Tim
On 25 Oct 2012 at 9:38, David Crossley wrote:
>
> Tim
> Penstock: the shuttle whch could be raised/opened, usually with a rack & pinion, to let water on to
> the wheel.
> Pentrough: the trough [wood or stone construction] through which water flows from the dam/pond
> to the penstock/'wheel.
> Hutch not common: I have assumed this is what I know as the penstock. A suspicion [only] that it
> could relate to a low-level feed to an undershot wheel.
> Hope this helps
> David
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