Did Madeleine McCann meet the same fate as Aisling Symes?

[pegasus]

The cover the lad stepped on was a Class A for use in grassed and pedestrian areas, like it says on it Class A150. It could also have been fabricated from plastic as the design superload would be three fifths of five eighths of FA.
A manhole cover in a road taking only slow moving heavy traffic would be, in the UK, called class C250,
If you want to argue the ins and outs of the traffic loading gimme the Portuguese design codes.
Back to the plot; Class C weights kick off at 55kg for a 450mm diameter job.
I leave you all to calculate and debate.
Useful references European Standard BS EN124 and of course WPCF Manual of Practice #9.
It's much more accurate than guessing but not as much fun I guess 

If you remove an A150 cover from one manhole and remove a C250 cover from another manhole and place the covers at the side of the road, which of the two holes has the greatest weight bearing strength now Alice?

[misty]

If you remove an A150 cover from one manhole and remove a C250 cover from another manhole and place the covers at the side of the road, which of the two holes has the greatest weight bearing strength now Alice?

 

[Alice Purjorick]

If you remove an A150 cover from one manhole and remove a C250 cover from another manhole and place the covers at the side of the road, which of the two holes has the greatest weight bearing strength now Alice?

Air has a pretty low load bearing capacity    however if the cover is set to one side leaving the hole totally exposed how does the cover then flip up about metre in the air when trodden on ? which was rather the issue in the article you linked. Are you saying the mass of the cover is irrelevant in this instance?

[pegasus]

Air has a pretty low load bearing capacity    however if the cover is set to one side leaving the hole totally exposed how does the cover then flip up about metre in the air when trodden on ? which was rather the issue in the article you linked. Are you saying the mass of the cover is irrelevant in this instance?

In the many cases of a cover slightly out of position which flips when a person stands on it, yes the mass of the cover will affect how fast it flips, how hard it hits the person as they fall,and whether the cover ends up right way up, or (in the AS case) upside-down, so your technical data is very relevant to the flipping covers Alice.
But I was wandering back to the pdl case where a witness stated seeing a cover, not slightly out of position, but completely removed (frame also) and placed at the side of the road.   

[Alice Purjorick]

In the many cases of a cover slightly out of position which flips when a person stands on it, yes the mass of the cover will affect how fast it flips, how hard it hits the person as they fall,and whether the cover ends up right way up, or (in the AS case) upside-down, so your technical data is very relevant to the flipping covers Alice.
But I was wandering back to the pdl case where a witness stated seeing a cover, not slightly out of position, but completely removed (frame also) and placed at the side of the road.

Yeah I forgot that bit! It is easy to do with Robbity about.
Cover off, fall down hole stay in hole unless the outlet sewer is 400 diameter or above then one could crawl along it or be washed through.
We have done all this before...............I thought SiL was going to obtain copies of the drawings last time out?

[Robittybob1]

Yeah I forgot that bit! It is easy to do with Robbity about.
Cover off, fall down hole stay in hole unless the outlet sewer is 400 diameter or above then one could crawl along it or be washed through.
We have done all this before...............I thought SiL was going to obtain copies of the drawings last time out?

What did I have to do with this?

[ShiningInLuz]

Yeah I forgot that bit! It is easy to do with Robbity about.
Cover off, fall down hole stay in hole unless the outlet sewer is 400 diameter or above then one could crawl along it or be washed through.
We have done all this before...............I thought SiL was going to obtain copies of the drawings last time out?

Can I ask what drawings I was supposedly going to get?

[pegasus]

Can I ask what drawings I was supposedly going to get?

Presumably the complete detailed plans of both the storm drain network and the foul drain network for the whole of PDL in 2007 Shining. But I certainly don't recall you ever saying you would post them.