Good road surfaces often seem to be ruined by sinking manhole surrounds
which then accelerates due to the pounding of wheels.
What is the cause?
Is it the brickwork of the chamber that is sub-standard and is crumbling?
Is it the foundations that are sinking - if so then what are the
implications for the drain or pipework?
Is it that the cover does not spread the weight over a large enough area?
Is it poor workmanship or is there a lack of a proper standard when these
It can be done by using slotted kerbstones that are connected into
drains that are under the pavement. Or even cast iron covers with
a lid that lifts up, also set into the pavement but with a slot
level with the road surface. These work fine until an HGV drives
up onto the pavement and smashes them.
Any reason for the other services to go under the road, such as water,
gas, electric, sewer, phone? All of which seem to require manholes in
the road and the road being dug up a lot. I want to know why *these*
all go under the road.
"Freedom is sloppy. But since tyranny's the only guaranteed byproduct of
those who insist on a perfect world, freedom will have to do." -- Bigby Wolf
Our gas main ran along the back gardens, until replaced a couple of
years ago with a new main along the road. Electric cable runs along the
pavement, water along the pavement, recently Virgin put their fibre
along the pavement in a shallow trench. Foul and surface water drains
are along our back gardens. We have 5x man hole covers in the back, for
our purposes and public ones.
I see plenty of them in UK; very common when we had a
thriving metal bashing and casting business in the
Only places like Fiji gets deluges which is why the gutter and storm
drains are massive. Britain never gets 10 inches of rain in a day
as Fiji and other places do. The most we have had to worry about is
about 4 inches in a day and that is a one in 50 year event.
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