Wednesday 7 December 2011

Getting a grip on opening lock gates

I find it annoying that what ought to be useful grips for the feet while pushing or pulling a balance beam are often in the wrong place. For maximum leverage one needs to apply the force at the furthest distance from the pivot point. In the case of a balance beam, this is at the very end of the beam. The sticking-up bricks often do not coincide with this point, meaning either that you have to expend more effort than necessary, or that you risk slipping on a less than ideal surface. Usually grass.


The photo illustrates this.

Yes, it's on the northern Grand Union, where the lock gates are well-balanced, and, although heavy, are reasonably easy to move. But they're not all like this. At many locks you find worn-out arcs of grass just outside the "official" operation zone.

A little earlier (this was on our cruise in April) a BW team was installing these grips (is there a better term for them?) in recently renewed concrete.


I asked why they couldn't be better positioned. I think they didn't understand what I was getting at, as they said that they had to be placed a standard distance apart.


On a very closely related matter, it would help if the handle on the balance beam in the top photo were positioned at the end.

2 comments:

ketro said...

Those grips are also known as trip hazards. With all the latest elfan saiphty rules and regs. I'm surprised they're not all being removed and replaced with more square bollards.
I'm such an old cynic.
Kevin.
www.travelsontranquility.blogspot.com

Neil Corbett said...

I couldn't agree more. I'm always wondering why they don't place them at the point of max leverage. Let's hope that when C&RT comes in, they'll listen more to people who actually use this stuff.