Author Topic: Grating Alignment  (Read 896 times)

Grating Alignment
« on: November 11, 2018, 12:58:04 pm »
The grating pictured  below is being installed, I presume eventually across the entire road here:-https://goo.gl/maps/czAvdtoMbzB2



The grating slots are 18mm wide. This  is  a  popular road  cycling  route. To be fair, that 25C tyre was not  inflated  hard, but a 20 or 23 C tyre (which I don't have to hand) would, IMO jam in tight. Even droping a front wheel in without jamming could cause a crash   Logged report with DCC Highways FS-Case-32122601.

DCC have previous https://yacf.co.uk/forum/index.php?topic=42446.25.

 

Re: Grating Alignment
« Reply #1 on: November 11, 2018, 02:34:46 pm »
They've specified the cover wrong. The slots are supposed to be perpendicular to the dirrection of travel for precisely the reason you have identified.

Socks

  • FFCT rally, France 2012
Re: Grating Alignment
« Reply #2 on: November 11, 2018, 03:02:51 pm »
DCC have previous https://yacf.co.uk/forum/index.php?topic=42446.25.
[/quote]

They certainly have.  Locally I have to cope with several examples of dangerous and badly designed roads and junctions:

- chicanes, which encourage 'give way lottery' and don't have a bypass for cycles
- a new traffic light junction, completed only two years ago, without even something as basic as advanced stop lines for cycles
- a major road proposal to create a dangerous left turning lane and make an already difficult traffic light crossroads (again, no advance stop lines for cyclists) even more risky

My understanding is that design guidelines for vulnerable road users are advisory, so old fashioned highways departments such as that in DCC can continue to ignore them.

Re: Grating Alignment
« Reply #3 on: November 12, 2018, 02:52:28 pm »
Until their first criminal negligence claim comes in.
Get a bicycle. You will never regret it, if you live- Mark Twain

Re: Grating Alignment
« Reply #4 on: November 13, 2018, 08:48:15 am »
I have  been told the gratings will be changed.  'Matter was overlooked'

I found the manufacturers site. The  E400 gratings will I presume be swapped out for E600's
Still not ideal but much better.

https://www.althon.co.uk/products/bgz-s-500-concrete-drainage-channel/detail/

 :thumbsup:

Re: Grating Alignment
« Reply #5 on: November 13, 2018, 09:03:55 am »
examples of dangerous and badly designed roads and junctions:

- chicanes, which encourage 'give way lottery' and don't have a bypass for cycles


The chicane bypass idea is fundamentally flawed. All the examples around Oxon/Berks effectively deliver you into the path of the oncoming traffic negotiating the chicane.

LittleWheelsandBig

  • Whimsy Rider
Re: Grating Alignment
« Reply #6 on: November 13, 2018, 09:06:14 am »
Load ratings for manhole covers and drainage are D400 (public highway), E600 (heavy loads) and F900 (exceptionally heavy loads e.g. ports and airports). Alignment of drainage slots doesn't directly relate to load rating but slots tend to get smaller as load rating increases.
Wheel meet again, don't know where, don't know when...

Socks

  • FFCT rally, France 2012
Re: Grating Alignment
« Reply #7 on: November 13, 2018, 11:48:54 am »


The chicane bypass idea is fundamentally flawed. All the examples around Oxon/Berks effectively deliver you into the path of the oncoming traffic negotiating the chicane.
[/quote]

Absolutely - lower speed limits with cameras to enforce them (in the absence of any traffic policing) would be my preference.